<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2023 Workiva-->
<!--r:a117ce1f-da36-43b8-8c29-05f2635d327a,g:7aa7f947-8e41-4abf-b680-bf49e8d7773c-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.dineequity.com/role/ConsolidatedStatementsofComprehensiveIncomeLoss" xlink:type="simple" xlink:href="din-20221231.xsd#ConsolidatedStatementsofComprehensiveIncomeLoss"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/ConsolidatedStatementsofComprehensiveIncomeLoss" xlink:type="extended" id="i981a8762ffd7422b9ddefda9ab86b496_ConsolidatedStatementsofComprehensiveIncomeLoss">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_79e2baae-d3c7-4a10-b240-55c5a43927bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_RevenuesAbstract_79e2baae-d3c7-4a10-b240-55c5a43927bf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_cb226c53-a4d7-4f5f-978d-40d1269d4873" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_79e2baae-d3c7-4a10-b240-55c5a43927bf" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_cb226c53-a4d7-4f5f-978d-40d1269d4873" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RentalIncome_663203e9-b99e-4fdc-80f5-8b9227ffdcd3" xlink:href="din-20221231.xsd#din_RentalIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_79e2baae-d3c7-4a10-b240-55c5a43927bf" xlink:to="loc_din_RentalIncome_663203e9-b99e-4fdc-80f5-8b9227ffdcd3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_7a56064a-15b5-4eea-8f56-1a14bafb33dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_79e2baae-d3c7-4a10-b240-55c5a43927bf" xlink:to="loc_us-gaap_Revenues_7a56064a-15b5-4eea-8f56-1a14bafb33dd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfRevenueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_56300e44-8f8a-4117-b15d-643cc67e7626" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_56300e44-8f8a-4117-b15d-643cc67e7626" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_0e5b5f21-000d-4007-b408-181ed8b716fa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProvisionForLoanLossesExpensed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_0e5b5f21-000d-4007-b408-181ed8b716fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostOfOperatingRevenue_4c75d476-984b-4df7-bd6e-77a46ba93b0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherCostOfOperatingRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:to="loc_us-gaap_OtherCostOfOperatingRevenue_4c75d476-984b-4df7-bd6e-77a46ba93b0e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RentalFinanceLeaseInterestExpense_5e2de9fb-164f-4bbe-9f30-880e84270539" xlink:href="din-20221231.xsd#din_RentalFinanceLeaseInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:to="loc_din_RentalFinanceLeaseInterestExpense_5e2de9fb-164f-4bbe-9f30-880e84270539" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RentalExpensesOther_a11c8538-d09c-4d18-9c10-9a1b523adafd" xlink:href="din-20221231.xsd#din_RentalExpensesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:to="loc_din_RentalExpensesOther_a11c8538-d09c-4d18-9c10-9a1b523adafd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RentalExpenses_180680f9-138f-4048-b7aa-d929ad6c500c" xlink:href="din-20221231.xsd#din_RentalExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:to="loc_din_RentalExpenses_180680f9-138f-4048-b7aa-d929ad6c500c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingInterestExpense_afc0a3e7-3730-4f92-b370-870e3171229e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:to="loc_us-gaap_FinancingInterestExpense_afc0a3e7-3730-4f92-b370-870e3171229e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_5d8b7611-9ae0-4004-9869-766c777c921f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_9c6b36d9-76f2-4c03-9914-eb80abdfafb2" xlink:to="loc_us-gaap_CostOfRevenue_5d8b7611-9ae0-4004-9869-766c777c921f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_93fae8c2-14ce-4468-81fc-ca3ade6c5ec3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_GrossProfit_93fae8c2-14ce-4468-81fc-ca3ade6c5ec3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_186ce38c-8798-41f9-a0f0-b21871819645" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_186ce38c-8798-41f9-a0f0-b21871819645" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_8539667d-c2a4-4678-b7e8-1c1616690127" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_InterestExpenseDebt_8539667d-c2a4-4678-b7e8-1c1616690127" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_10e255ad-dc84-4fda-8e88-8bd9ffc3faa1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_10e255ad-dc84-4fda-8e88-8bd9ffc3faa1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_9ca5727b-e6c8-4812-8bfb-d50d8421f563" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_9ca5727b-e6c8-4812-8bfb-d50d8421f563" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_e4a2135e-ce43-487a-8261-bcf91dc422cf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_e4a2135e-ce43-487a-8261-bcf91dc422cf" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_dd98f56b-f4dd-4b77-941b-69be06575bf3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_dd98f56b-f4dd-4b77-941b-69be06575bf3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_84cffeef-f8ca-4550-8ba7-587a6cfcd5aa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_84cffeef-f8ca-4550-8ba7-587a6cfcd5aa" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_e812c703-6659-4ee8-ab05-e63ed956dda8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_NetIncomeLoss_e812c703-6659-4ee8-ab05-e63ed956dda8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_22380842-7891-4ab8-9392-c8cf9bf6be7d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_22380842-7891-4ab8-9392-c8cf9bf6be7d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_e1187a52-92a0-4de7-88ba-02ecca1c93c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_22380842-7891-4ab8-9392-c8cf9bf6be7d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_e1187a52-92a0-4de7-88ba-02ecca1c93c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_c90f95d5-0ccd-45a6-b336-091a8e6e57a7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_22380842-7891-4ab8-9392-c8cf9bf6be7d" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_c90f95d5-0ccd-45a6-b336-091a8e6e57a7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_e01dc11f-9a7f-4cfc-8653-81ef21be8ce2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_e01dc11f-9a7f-4cfc-8653-81ef21be8ce2" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_35560772-3f95-48e8-a9cb-3869e8f364f7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_09c13afd-40b0-4ca3-8318-d7243c48ce13" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_e01dc11f-9a7f-4cfc-8653-81ef21be8ce2" xlink:to="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_09c13afd-40b0-4ca3-8318-d7243c48ce13" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_bc36f1d9-9187-43f1-afc2-44078f2a1cfb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_e01dc11f-9a7f-4cfc-8653-81ef21be8ce2" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_bc36f1d9-9187-43f1-afc2-44078f2a1cfb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_169de2ef-c28f-42c8-a08c-03730c1e60ab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_EarningsPerShareAbstract_169de2ef-c28f-42c8-a08c-03730c1e60ab" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_37fa8220-9c8a-43e5-99ec-925bf74e7753" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_169de2ef-c28f-42c8-a08c-03730c1e60ab" xlink:to="loc_us-gaap_EarningsPerShareBasic_37fa8220-9c8a-43e5-99ec-925bf74e7753" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_85557216-9ef5-44cb-97dd-44ca8f010a92" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_169de2ef-c28f-42c8-a08c-03730c1e60ab" xlink:to="loc_us-gaap_EarningsPerShareDiluted_85557216-9ef5-44cb-97dd-44ca8f010a92" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_b1cfdb18-31db-4ed4-a696-fccddbc3cc41" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_b1cfdb18-31db-4ed4-a696-fccddbc3cc41" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_a5a28b20-d8d6-4ec2-898b-b75d51f464d5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_b1cfdb18-31db-4ed4-a696-fccddbc3cc41" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_a5a28b20-d8d6-4ec2-898b-b75d51f464d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ea4dc21a-3c85-42b9-b3cc-a96fba05de0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_b1cfdb18-31db-4ed4-a696-fccddbc3cc41" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ea4dc21a-3c85-42b9-b3cc-a96fba05de0e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_eb2bfdbb-1e38-40d0-a40e-e8790133086b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_ceed7c4a-6179-4e33-8dfb-f3472266cf5c" xlink:to="loc_us-gaap_StatementTable_eb2bfdbb-1e38-40d0-a40e-e8790133086b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_348dd236-9da1-421e-a44f-afe001dc41ab" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_eb2bfdbb-1e38-40d0-a40e-e8790133086b" xlink:to="loc_srt_ProductOrServiceAxis_348dd236-9da1-421e-a44f-afe001dc41ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_348dd236-9da1-421e-a44f-afe001dc41ab_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_348dd236-9da1-421e-a44f-afe001dc41ab" xlink:to="loc_srt_ProductsAndServicesDomain_348dd236-9da1-421e-a44f-afe001dc41ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_0de7113f-8c3f-41c2-b920-09d1c6f1c378" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_348dd236-9da1-421e-a44f-afe001dc41ab" xlink:to="loc_srt_ProductsAndServicesDomain_0de7113f-8c3f-41c2-b920-09d1c6f1c378" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorMember_c59c5b2f-da7e-44c5-ae9d-a9ac9deb9bb9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0de7113f-8c3f-41c2-b920-09d1c6f1c378" xlink:to="loc_us-gaap_FranchisorMember_c59c5b2f-da7e-44c5-ae9d-a9ac9deb9bb9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FranchisorRoyaltiesfranchisefeesandotherMember_3e067697-c939-4363-8e71-18944e2b2c7c" xlink:href="din-20221231.xsd#din_FranchisorRoyaltiesfranchisefeesandotherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorMember_c59c5b2f-da7e-44c5-ae9d-a9ac9deb9bb9" xlink:to="loc_din_FranchisorRoyaltiesfranchisefeesandotherMember_3e067697-c939-4363-8e71-18944e2b2c7c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FranchisorAdvertisingRevenueMember_cad48b48-3691-4d1b-86b0-4ad591f89e1c" xlink:href="din-20221231.xsd#din_FranchisorAdvertisingRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorMember_c59c5b2f-da7e-44c5-ae9d-a9ac9deb9bb9" xlink:to="loc_din_FranchisorAdvertisingRevenueMember_cad48b48-3691-4d1b-86b0-4ad591f89e1c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FoodAndBeverageMember_14e25484-aab5-4353-89ef-ae98216b92dc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FoodAndBeverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0de7113f-8c3f-41c2-b920-09d1c6f1c378" xlink:to="loc_us-gaap_FoodAndBeverageMember_14e25484-aab5-4353-89ef-ae98216b92dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_872fd31b-7792-4044-80cd-9e630f63e11e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0de7113f-8c3f-41c2-b920-09d1c6f1c378" xlink:to="loc_us-gaap_FinancialServiceMember_872fd31b-7792-4044-80cd-9e630f63e11e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvertisingMember_17860c5b-5fc4-4275-b6fc-b5174402e8ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdvertisingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0de7113f-8c3f-41c2-b920-09d1c6f1c378" xlink:to="loc_us-gaap_AdvertisingMember_17860c5b-5fc4-4275-b6fc-b5174402e8ed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchiseMember_941f7e17-45c2-408f-82fd-4ee1294825ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0de7113f-8c3f-41c2-b920-09d1c6f1c378" xlink:to="loc_us-gaap_FranchiseMember_941f7e17-45c2-408f-82fd-4ee1294825ce" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/ConsolidatedStatementsofStockholdersDeficit" xlink:type="simple" xlink:href="din-20221231.xsd#ConsolidatedStatementsofStockholdersDeficit"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/ConsolidatedStatementsofStockholdersDeficit" xlink:type="extended" id="i96c353903d194b999aa94663e45114e0_ConsolidatedStatementsofStockholdersDeficit">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_664a30c1-6efb-43c7-8296-95c783751bc8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_664a30c1-6efb-43c7-8296-95c783751bc8" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_3e95d8e7-f83b-49d5-b473-0fe0cbe4e41c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_3e95d8e7-f83b-49d5-b473-0fe0cbe4e41c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_8067c065-2ed6-4a65-ac5e-f756a0e6f89b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_StockholdersEquity_8067c065-2ed6-4a65-ac5e-f756a0e6f89b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_80283d74-b83e-43d3-9fcb-831befba2255" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_TreasuryStockCommonShares_80283d74-b83e-43d3-9fcb-831befba2255" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdateExtensibleList_5daad339-b11f-4e85-a31e-0d9867993a3f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountingStandardsUpdateExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_AccountingStandardsUpdateExtensibleList_5daad339-b11f-4e85-a31e-0d9867993a3f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_b310bd44-4a6b-4e11-870d-56f23b3d5111" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_NetIncomeLoss_b310bd44-4a6b-4e11-870d-56f23b3d5111" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_21d0d479-1559-4179-ab5d-51a1515f029b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_21d0d479-1559-4179-ab5d-51a1515f029b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_97c9600e-7a03-4d59-928c-9e3d0a2c4d75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_97c9600e-7a03-4d59-928c-9e3d0a2c4d75" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_4254884b-f5a9-4276-b488-7784f6a9ce7d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_4254884b-f5a9-4276-b488-7784f6a9ce7d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued_2de1643d-32d6-41dd-aa5c-1a523d4fa678" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued_2de1643d-32d6-41dd-aa5c-1a523d4fa678" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_23219ea2-57db-4899-ae31-cf86f2244578" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_23219ea2-57db-4899-ae31-cf86f2244578" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_a06a83e1-f36e-4a6f-a7af-cd3201f78d15" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_a06a83e1-f36e-4a6f-a7af-cd3201f78d15" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RestrictedStockRepurchasedDuringPeriodShares_a800778d-e883-40ec-b33b-921d191a1e1a" xlink:href="din-20221231.xsd#din_RestrictedStockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_din_RestrictedStockRepurchasedDuringPeriodShares_a800778d-e883-40ec-b33b-921d191a1e1a" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RestrictedStockRepurchasedDuringPeriodValue_d053f77d-9641-467c-8b57-027b0e7825b5" xlink:href="din-20221231.xsd#din_RestrictedStockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_din_RestrictedStockRepurchasedDuringPeriodValue_d053f77d-9641-467c-8b57-027b0e7825b5" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_260ce2ce-1d70-4264-8f6f-ba6e00623a0f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_260ce2ce-1d70-4264-8f6f-ba6e00623a0f" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_81be37d6-f083-40fd-ac86-b52cd49b3aaf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_DividendsCommonStock_81be37d6-f083-40fd-ac86-b52cd49b3aaf" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_daa3cec2-5cb8-4bdb-bcc9-77ea735d5897" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_18501d41-2af6-47ea-8a30-d14cfbf47745" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_daa3cec2-5cb8-4bdb-bcc9-77ea735d5897" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_8167d73d-aa09-4952-8ae8-bc941fb8a55a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_a78728aa-e34c-4405-91a0-274c951289e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_84a8b119-44ea-4506-8633-41fcf342647d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_d69dd4c3-9fa2-4df9-9075-71de9715b31d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_664a30c1-6efb-43c7-8296-95c783751bc8" xlink:to="loc_us-gaap_StatementTable_d69dd4c3-9fa2-4df9-9075-71de9715b31d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_4f6e012d-8e92-41c7-afa9-d52aeb03b1a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_d69dd4c3-9fa2-4df9-9075-71de9715b31d" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_4f6e012d-8e92-41c7-afa9-d52aeb03b1a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_4f6e012d-8e92-41c7-afa9-d52aeb03b1a8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_4f6e012d-8e92-41c7-afa9-d52aeb03b1a8" xlink:to="loc_us-gaap_EquityComponentDomain_4f6e012d-8e92-41c7-afa9-d52aeb03b1a8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_564856e0-2b14-4736-95d0-302a6440f007" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_4f6e012d-8e92-41c7-afa9-d52aeb03b1a8" xlink:to="loc_us-gaap_EquityComponentDomain_564856e0-2b14-4736-95d0-302a6440f007" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_961a2dec-fd76-4f03-a3ff-92cf2851ca18" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_564856e0-2b14-4736-95d0-302a6440f007" xlink:to="loc_us-gaap_CommonStockMember_961a2dec-fd76-4f03-a3ff-92cf2851ca18" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_99eebbc7-6648-49b9-9d8c-272116158bda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_564856e0-2b14-4736-95d0-302a6440f007" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_99eebbc7-6648-49b9-9d8c-272116158bda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_cfee4012-a435-4569-b8e0-6ebf47934bb2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_564856e0-2b14-4736-95d0-302a6440f007" xlink:to="loc_us-gaap_RetainedEarningsMember_cfee4012-a435-4569-b8e0-6ebf47934bb2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7e5db4f8-2698-4349-9e80-250caaa77baf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_564856e0-2b14-4736-95d0-302a6440f007" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7e5db4f8-2698-4349-9e80-250caaa77baf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_426bd48b-a9b3-40a9-bfce-e7119365ffc3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_564856e0-2b14-4736-95d0-302a6440f007" xlink:to="loc_us-gaap_TreasuryStockCommonMember_426bd48b-a9b3-40a9-bfce-e7119365ffc3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_5b938ef6-519d-4574-a0cc-e673ef8b6691" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_d69dd4c3-9fa2-4df9-9075-71de9715b31d" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_5b938ef6-519d-4574-a0cc-e673ef8b6691" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5b938ef6-519d-4574-a0cc-e673ef8b6691_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_5b938ef6-519d-4574-a0cc-e673ef8b6691" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5b938ef6-519d-4574-a0cc-e673ef8b6691_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_ae832a32-159b-4b5d-a473-05b46c51e837" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_5b938ef6-519d-4574-a0cc-e673ef8b6691" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_ae832a32-159b-4b5d-a473-05b46c51e837" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_9864909d-0c8b-4f15-86fc-a59dda77c0e4" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_ae832a32-159b-4b5d-a473-05b46c51e837" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_9864909d-0c8b-4f15-86fc-a59dda77c0e4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/TheCompanyDetails" xlink:type="simple" xlink:href="din-20221231.xsd#TheCompanyDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/TheCompanyDetails" xlink:type="extended" id="i1aa248901d6e4e219e14b1a20e3602c7_TheCompanyDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureLineItems_d096bba4-4128-412b-a849-b534bb57559e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfRestaurants_aff547e6-5fa6-41ef-82cc-ec20924b3b9a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfRestaurants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureLineItems_d096bba4-4128-412b-a849-b534bb57559e" xlink:to="loc_us-gaap_NumberOfRestaurants_aff547e6-5fa6-41ef-82cc-ec20924b3b9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfStatesInWhichEntityOperates_f8a7c0db-1839-4b83-8042-e9b93b39cbbb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfStatesInWhichEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureLineItems_d096bba4-4128-412b-a849-b534bb57559e" xlink:to="loc_us-gaap_NumberOfStatesInWhichEntityOperates_f8a7c0db-1839-4b83-8042-e9b93b39cbbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfTerritoriesInWhichEntityOperates_c804c678-6ad5-435f-afaa-486889cf23bb" xlink:href="din-20221231.xsd#din_NumberOfTerritoriesInWhichEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureLineItems_d096bba4-4128-412b-a849-b534bb57559e" xlink:to="loc_din_NumberOfTerritoriesInWhichEntityOperates_c804c678-6ad5-435f-afaa-486889cf23bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfCountriesOutsideTheUnitedStatesInWhichTheEntityOperates_3d864b33-4913-4841-9a35-a4dd9270fb1a" xlink:href="din-20221231.xsd#din_NumberOfCountriesOutsideTheUnitedStatesInWhichTheEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureLineItems_d096bba4-4128-412b-a849-b534bb57559e" xlink:to="loc_din_NumberOfCountriesOutsideTheUnitedStatesInWhichTheEntityOperates_3d864b33-4913-4841-9a35-a4dd9270fb1a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFranchisorDisclosureTable_d9236166-5353-4dd8-a536-5755c958c3c9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFranchisorDisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FranchisorDisclosureLineItems_d096bba4-4128-412b-a849-b534bb57559e" xlink:to="loc_us-gaap_ScheduleOfFranchisorDisclosureTable_d9236166-5353-4dd8-a536-5755c958c3c9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_bf59d16c-b9b8-4732-9abc-0d8f6d121229" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFranchisorDisclosureTable_d9236166-5353-4dd8-a536-5755c958c3c9" xlink:to="loc_dei_LegalEntityAxis_bf59d16c-b9b8-4732-9abc-0d8f6d121229" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bf59d16c-b9b8-4732-9abc-0d8f6d121229_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_bf59d16c-b9b8-4732-9abc-0d8f6d121229" xlink:to="loc_dei_EntityDomain_bf59d16c-b9b8-4732-9abc-0d8f6d121229_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f76bd1ab-d9eb-4110-9233-f9ae757acdec" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_bf59d16c-b9b8-4732-9abc-0d8f6d121229" xlink:to="loc_dei_EntityDomain_f76bd1ab-d9eb-4110-9233-f9ae757acdec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_IhopMember_5c205f19-7a28-4a92-a9fd-5c2d494f7d89" xlink:href="din-20221231.xsd#din_IhopMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f76bd1ab-d9eb-4110-9233-f9ae757acdec" xlink:to="loc_din_IhopMember_5c205f19-7a28-4a92-a9fd-5c2d494f7d89" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_222e9255-1434-4746-9453-3b101380d9b0" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f76bd1ab-d9eb-4110-9233-f9ae757acdec" xlink:to="loc_din_ApplebeesMember_222e9255-1434-4746-9453-3b101380d9b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FuzzysMember_f12fb705-7981-4ede-894c-a754aa39ce99" xlink:href="din-20221231.xsd#din_FuzzysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f76bd1ab-d9eb-4110-9233-f9ae757acdec" xlink:to="loc_din_FuzzysMember_f12fb705-7981-4ede-894c-a754aa39ce99" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureAxis_4292cf21-0400-455e-bc30-b80c0f1df104" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFranchisorDisclosureTable_d9236166-5353-4dd8-a536-5755c958c3c9" xlink:to="loc_us-gaap_FranchisorDisclosureAxis_4292cf21-0400-455e-bc30-b80c0f1df104" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_4292cf21-0400-455e-bc30-b80c0f1df104_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_4292cf21-0400-455e-bc30-b80c0f1df104" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_4292cf21-0400-455e-bc30-b80c0f1df104_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_b4ca9670-7ae8-44dd-90be-fc35073a3f05" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_4292cf21-0400-455e-bc30-b80c0f1df104" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_b4ca9670-7ae8-44dd-90be-fc35073a3f05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisedUnitsMember_d4e88811-ee9d-4a7e-9379-4fe6f404254b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_b4ca9670-7ae8-44dd-90be-fc35073a3f05" xlink:to="loc_us-gaap_FranchisedUnitsMember_d4e88811-ee9d-4a7e-9379-4fe6f404254b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_7a200e66-f1ed-4818-83b5-5a972dd4b439" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_b4ca9670-7ae8-44dd-90be-fc35073a3f05" xlink:to="loc_us-gaap_LicensingAgreementsMember_7a200e66-f1ed-4818-83b5-5a972dd4b439" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityOperatedUnitsMember_afb24fed-ec77-4fff-9435-0543c5643a03" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityOperatedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_b4ca9670-7ae8-44dd-90be-fc35073a3f05" xlink:to="loc_us-gaap_EntityOperatedUnitsMember_afb24fed-ec77-4fff-9435-0543c5643a03" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="extended" id="i190f57e24b90402e881b34b3fe0c373c_BasisofPresentationandSummaryofSignificantAccountingPoliciesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfFranchisees_26556870-fdcb-4751-8065-dd74bc1ed8de" xlink:href="din-20221231.xsd#din_NumberOfFranchisees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_din_NumberOfFranchisees_26556870-fdcb-4751-8065-dd74bc1ed8de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfRestaurants_e3be81a8-af43-4f77-9231-9c8dca65886f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfRestaurants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_NumberOfRestaurants_e3be81a8-af43-4f77-9231-9c8dca65886f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_a3378c2a-e228-438c-9181-c6128021e138" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_a3378c2a-e228-438c-9181-c6128021e138" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNet_f8f42eff-7a45-4dc1-b71d-66da59cffa0a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_AccountsReceivableNet_f8f42eff-7a45-4dc1-b71d-66da59cffa0a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_3629ab97-fbe0-4a17-803e-867c1580c4e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_3629ab97-fbe0-4a17-803e-867c1580c4e9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportingUnits_37465705-da57-4a0a-928a-73135be8bada" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfReportingUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_NumberOfReportingUnits_37465705-da57-4a0a-928a-73135be8bada" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberofRevenueOperations_1534271c-fcb8-43ec-8fbe-1e00b18dc139" xlink:href="din-20221231.xsd#din_NumberofRevenueOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_din_NumberofRevenueOperations_1534271c-fcb8-43ec-8fbe-1e00b18dc139" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_0ea65571-a124-4b3f-8626-14c1b3306da9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_0ea65571-a124-4b3f-8626-14c1b3306da9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvertisingExpense_17ab992b-2bd3-4ddb-8797-a0c73148f66f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdvertisingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_AdvertisingExpense_17ab992b-2bd3-4ddb-8797-a0c73148f66f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_ccba307c-dcfd-4e02-83d4-d1154c02bc7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfOperatingSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_NumberOfOperatingSegments_ccba307c-dcfd-4e02-83d4-d1154c02bc7b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_162a0b3f-0d9f-4d70-bb95-3e21c0f069af" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_NumberOfReportableSegments_162a0b3f-0d9f-4d70-bb95-3e21c0f069af" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfTerritoriesInWhichEntityOperates_a351fa68-d9e1-409c-9076-014a077a1bef" xlink:href="din-20221231.xsd#din_NumberOfTerritoriesInWhichEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_din_NumberOfTerritoriesInWhichEntityOperates_a351fa68-d9e1-409c-9076-014a077a1bef" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfCountriesOutsideTheUnitedStatesInWhichTheEntityOperates_d7a5f4fe-c30b-4a30-a252-5983138b084c" xlink:href="din-20221231.xsd#din_NumberOfCountriesOutsideTheUnitedStatesInWhichTheEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_din_NumberOfCountriesOutsideTheUnitedStatesInWhichTheEntityOperates_d7a5f4fe-c30b-4a30-a252-5983138b084c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfRestaurantsRefranchisedAndSold_58f27d2e-aa09-48e2-8cfb-c466b3b40b92" xlink:href="din-20221231.xsd#din_NumberOfRestaurantsRefranchisedAndSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_din_NumberOfRestaurantsRefranchisedAndSold_58f27d2e-aa09-48e2-8cfb-c466b3b40b92" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4ed0d58c-b79f-473f-8c6d-d0899d1ef4e7" xlink:to="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_3068d661-5cdd-4a56-98d7-95c689385246" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:to="loc_srt_StatementGeographicalAxis_3068d661-5cdd-4a56-98d7-95c689385246" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_3068d661-5cdd-4a56-98d7-95c689385246_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_3068d661-5cdd-4a56-98d7-95c689385246" xlink:to="loc_srt_SegmentGeographicalDomain_3068d661-5cdd-4a56-98d7-95c689385246_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_5fbd3282-e20a-4dbc-b5fa-72d7ed43b404" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_3068d661-5cdd-4a56-98d7-95c689385246" xlink:to="loc_srt_SegmentGeographicalDomain_5fbd3282-e20a-4dbc-b5fa-72d7ed43b404" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_c7c0a975-9d25-424c-9e52-80fd84374d80" xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_5fbd3282-e20a-4dbc-b5fa-72d7ed43b404" xlink:to="loc_country_US_c7c0a975-9d25-424c-9e52-80fd84374d80" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_b6c5a8f6-46b0-41be-91d3-a5369bca1e3c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:to="loc_dei_LegalEntityAxis_b6c5a8f6-46b0-41be-91d3-a5369bca1e3c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b6c5a8f6-46b0-41be-91d3-a5369bca1e3c_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_b6c5a8f6-46b0-41be-91d3-a5369bca1e3c" xlink:to="loc_dei_EntityDomain_b6c5a8f6-46b0-41be-91d3-a5369bca1e3c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a5904c83-66a7-46f9-9719-60375d7d867d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_b6c5a8f6-46b0-41be-91d3-a5369bca1e3c" xlink:to="loc_dei_EntityDomain_a5904c83-66a7-46f9-9719-60375d7d867d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_09daed98-6be4-46ba-be3c-aabb999bd7bb" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a5904c83-66a7-46f9-9719-60375d7d867d" xlink:to="loc_din_ApplebeesMember_09daed98-6be4-46ba-be3c-aabb999bd7bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_IhopMember_fc1dd32b-3274-4588-ad64-1020e31ea9e0" xlink:href="din-20221231.xsd#din_IhopMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a5904c83-66a7-46f9-9719-60375d7d867d" xlink:to="loc_din_IhopMember_fc1dd32b-3274-4588-ad64-1020e31ea9e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FuzzysMember_532298f9-9e9a-4a27-8ff3-75d896a76fbd" xlink:href="din-20221231.xsd#din_FuzzysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a5904c83-66a7-46f9-9719-60375d7d867d" xlink:to="loc_din_FuzzysMember_532298f9-9e9a-4a27-8ff3-75d896a76fbd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_7ea8d065-8672-4553-a070-bebdaaff1d48" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_7ea8d065-8672-4553-a070-bebdaaff1d48" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_7ea8d065-8672-4553-a070-bebdaaff1d48_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_7ea8d065-8672-4553-a070-bebdaaff1d48" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_7ea8d065-8672-4553-a070-bebdaaff1d48_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ee0db2af-bffa-4623-a900-62a7f5ce1b0f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_7ea8d065-8672-4553-a070-bebdaaff1d48" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ee0db2af-bffa-4623-a900-62a7f5ce1b0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_868923db-8a0c-4bac-a80e-9cec1f959fa4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ee0db2af-bffa-4623-a900-62a7f5ce1b0f" xlink:to="loc_us-gaap_SalesRevenueNetMember_868923db-8a0c-4bac-a80e-9cec1f959fa4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableMember_56a1824e-9aac-4d18-b6ff-04d1dac3d496" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ee0db2af-bffa-4623-a900-62a7f5ce1b0f" xlink:to="loc_us-gaap_AccountsReceivableMember_56a1824e-9aac-4d18-b6ff-04d1dac3d496" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_6d153a26-3e16-45d1-a303-687ab18c382f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_6d153a26-3e16-45d1-a303-687ab18c382f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_6d153a26-3e16-45d1-a303-687ab18c382f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_6d153a26-3e16-45d1-a303-687ab18c382f" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_6d153a26-3e16-45d1-a303-687ab18c382f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_5a9bfb70-0ffc-48fa-9739-ec3748c1f999" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_6d153a26-3e16-45d1-a303-687ab18c382f" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_5a9bfb70-0ffc-48fa-9739-ec3748c1f999" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromRightsConcentrationRiskMember_c6665918-93f9-4cf0-8e0a-7480b31789b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromRightsConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_5a9bfb70-0ffc-48fa-9739-ec3748c1f999" xlink:to="loc_us-gaap_RevenueFromRightsConcentrationRiskMember_c6665918-93f9-4cf0-8e0a-7480b31789b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureAxis_cb2d8f82-c620-4c4f-8d87-04f56580936e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:to="loc_us-gaap_FranchisorDisclosureAxis_cb2d8f82-c620-4c4f-8d87-04f56580936e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_cb2d8f82-c620-4c4f-8d87-04f56580936e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_cb2d8f82-c620-4c4f-8d87-04f56580936e" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_cb2d8f82-c620-4c4f-8d87-04f56580936e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_4428b47c-c28f-45d2-b871-d642ad65c3fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_cb2d8f82-c620-4c4f-8d87-04f56580936e" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_4428b47c-c28f-45d2-b871-d642ad65c3fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LargestFranchiseesMember_3ea2c741-aeaa-4049-8c43-88ed23f80e9b" xlink:href="din-20221231.xsd#din_LargestFranchiseesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_4428b47c-c28f-45d2-b871-d642ad65c3fd" xlink:to="loc_din_LargestFranchiseesMember_3ea2c741-aeaa-4049-8c43-88ed23f80e9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisedUnitsMember_a4ebc916-c711-4f88-b213-5777d08f460d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_4428b47c-c28f-45d2-b871-d642ad65c3fd" xlink:to="loc_us-gaap_FranchisedUnitsMember_a4ebc916-c711-4f88-b213-5777d08f460d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FranchisedUnitsOrLicensingAgreementsMember_55a46b95-de17-40ed-b72c-6fa43caf35e3" xlink:href="din-20221231.xsd#din_FranchisedUnitsOrLicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_4428b47c-c28f-45d2-b871-d642ad65c3fd" xlink:to="loc_din_FranchisedUnitsOrLicensingAgreementsMember_55a46b95-de17-40ed-b72c-6fa43caf35e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityOperatedUnitsMember_415257ad-cdbe-4b1a-9519-99c3162819be" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityOperatedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_4428b47c-c28f-45d2-b871-d642ad65c3fd" xlink:to="loc_us-gaap_EntityOperatedUnitsMember_415257ad-cdbe-4b1a-9519-99c3162819be" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_bf945bab-840b-4c49-aa7f-239b3be95a9f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:to="loc_srt_MajorCustomersAxis_bf945bab-840b-4c49-aa7f-239b3be95a9f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_bf945bab-840b-4c49-aa7f-239b3be95a9f_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_bf945bab-840b-4c49-aa7f-239b3be95a9f" xlink:to="loc_srt_NameOfMajorCustomerDomain_bf945bab-840b-4c49-aa7f-239b3be95a9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_57034362-fa24-4841-8281-1506adbfb188" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_bf945bab-840b-4c49-aa7f-239b3be95a9f" xlink:to="loc_srt_NameOfMajorCustomerDomain_57034362-fa24-4841-8281-1506adbfb188" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FranchiseeOneMember_5fde6c52-2dc8-4db0-8098-3ed187bf20bd" xlink:href="din-20221231.xsd#din_FranchiseeOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_57034362-fa24-4841-8281-1506adbfb188" xlink:to="loc_din_FranchiseeOneMember_5fde6c52-2dc8-4db0-8098-3ed187bf20bd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_1bbf1af3-6f94-464e-8d72-764a40a50274" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_9d29de92-4078-4ab6-b7e1-97a4387bfec7" xlink:to="loc_srt_ProductOrServiceAxis_1bbf1af3-6f94-464e-8d72-764a40a50274" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_1bbf1af3-6f94-464e-8d72-764a40a50274_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_1bbf1af3-6f94-464e-8d72-764a40a50274" xlink:to="loc_srt_ProductsAndServicesDomain_1bbf1af3-6f94-464e-8d72-764a40a50274_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_f5df1499-7b98-49e9-91ce-e387a7f4cbab" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_1bbf1af3-6f94-464e-8d72-764a40a50274" xlink:to="loc_srt_ProductsAndServicesDomain_f5df1499-7b98-49e9-91ce-e387a7f4cbab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_GiftCardBreakageRevenueMember_79ad8898-ac81-4096-bfc1-29998cdd5a08" xlink:href="din-20221231.xsd#din_GiftCardBreakageRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f5df1499-7b98-49e9-91ce-e387a7f4cbab" xlink:to="loc_din_GiftCardBreakageRevenueMember_79ad8898-ac81-4096-bfc1-29998cdd5a08" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsDetails" xlink:type="extended" id="i4998386b203d4dbfa5ec9f946b3b8dc9_BasisofPresentationandSummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_350ca77c-8062-4ba2-ae3d-0aee8a5b5879" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cc8ca7f2-a3a0-4395-b478-b06fa6ba716c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_350ca77c-8062-4ba2-ae3d-0aee8a5b5879" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cc8ca7f2-a3a0-4395-b478-b06fa6ba716c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_201897b7-96f6-4875-8092-aa60e7dae736" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_350ca77c-8062-4ba2-ae3d-0aee8a5b5879" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_201897b7-96f6-4875-8092-aa60e7dae736" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_70b42149-c51b-44f7-870a-5436d05b29a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_201897b7-96f6-4875-8092-aa60e7dae736" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_70b42149-c51b-44f7-870a-5436d05b29a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_70b42149-c51b-44f7-870a-5436d05b29a8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_70b42149-c51b-44f7-870a-5436d05b29a8" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_70b42149-c51b-44f7-870a-5436d05b29a8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6114a62d-9552-440d-b15c-b4c2d19fdb20" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_70b42149-c51b-44f7-870a-5436d05b29a8" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6114a62d-9552-440d-b15c-b4c2d19fdb20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_9c344902-ac72-4394-885f-ec7dd28b500b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6114a62d-9552-440d-b15c-b4c2d19fdb20" xlink:to="loc_us-gaap_MoneyMarketFundsMember_9c344902-ac72-4394-885f-ec7dd28b500b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_PrepaidAdvertisingandGiftCardsMember_cc1b34d0-ee9c-4fc4-af32-9eb135ef6941" xlink:href="din-20221231.xsd#din_PrepaidAdvertisingandGiftCardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6114a62d-9552-440d-b15c-b4c2d19fdb20" xlink:to="loc_din_PrepaidAdvertisingandGiftCardsMember_cc1b34d0-ee9c-4fc4-af32-9eb135ef6941" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_OtherDepositoryAccountsMember_54ca0e34-fa96-46a9-a336-19cedc5f9784" xlink:href="din-20221231.xsd#din_OtherDepositoryAccountsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6114a62d-9552-440d-b15c-b4c2d19fdb20" xlink:to="loc_din_OtherDepositoryAccountsMember_54ca0e34-fa96-46a9-a336-19cedc5f9784" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesComponentsofRestrictedCashDetails" xlink:type="simple" xlink:href="din-20221231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesComponentsofRestrictedCashDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesComponentsofRestrictedCashDetails" xlink:type="extended" id="ib87be210e4404c738a55dcc08ff5e224_BasisofPresentationandSummaryofSignificantAccountingPoliciesComponentsofRestrictedCashDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_63e2e17f-ad84-47a4-8823-3c85ad49f6c3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_99dfb5f5-5fd5-4239-ba76-6ceedc6b3935" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_63e2e17f-ad84-47a4-8823-3c85ad49f6c3" xlink:to="loc_us-gaap_RestrictedCashCurrent_99dfb5f5-5fd5-4239-ba76-6ceedc6b3935" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_e1ab4ed4-7ed2-42a9-bd0f-547e95710ba3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_63e2e17f-ad84-47a4-8823-3c85ad49f6c3" xlink:to="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_e1ab4ed4-7ed2-42a9-bd0f-547e95710ba3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_1b3b0e71-bd50-43ee-bd4a-3365ea13bd85" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_e1ab4ed4-7ed2-42a9-bd0f-547e95710ba3" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_1b3b0e71-bd50-43ee-bd4a-3365ea13bd85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_1b3b0e71-bd50-43ee-bd4a-3365ea13bd85_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_1b3b0e71-bd50-43ee-bd4a-3365ea13bd85" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_1b3b0e71-bd50-43ee-bd4a-3365ea13bd85_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_f23608fc-0c0e-4997-a4e7-58f5e37c9de1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_1b3b0e71-bd50-43ee-bd4a-3365ea13bd85" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_f23608fc-0c0e-4997-a4e7-58f5e37c9de1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_SecuritizedDebtReservesMember_9cdb097c-67ee-4a66-bf6a-f73c1dd16699" xlink:href="din-20221231.xsd#din_SecuritizedDebtReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_f23608fc-0c0e-4997-a4e7-58f5e37c9de1" xlink:to="loc_din_SecuritizedDebtReservesMember_9cdb097c-67ee-4a66-bf6a-f73c1dd16699" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_AdvertisingFundsMember_62c9e0b5-8be7-4ef1-bae3-a93b25311107" xlink:href="din-20221231.xsd#din_AdvertisingFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_f23608fc-0c0e-4997-a4e7-58f5e37c9de1" xlink:to="loc_din_AdvertisingFundsMember_62c9e0b5-8be7-4ef1-bae3-a93b25311107" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_OtherRestrictedCashCurrentMember_c5c9c6e3-9f78-4a28-bdbf-fc77eddd8bbe" xlink:href="din-20221231.xsd#din_OtherRestrictedCashCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_f23608fc-0c0e-4997-a4e7-58f5e37c9de1" xlink:to="loc_din_OtherRestrictedCashCurrentMember_c5c9c6e3-9f78-4a28-bdbf-fc77eddd8bbe" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesGeneralRangeofDepreciableandAmortizablePropertyandEquipmentLivesDetails" xlink:type="simple" xlink:href="din-20221231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesGeneralRangeofDepreciableandAmortizablePropertyandEquipmentLivesDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesGeneralRangeofDepreciableandAmortizablePropertyandEquipmentLivesDetails" xlink:type="extended" id="i4ac42cfe121c447c855fae06e7da4f82_BasisofPresentationandSummaryofSignificantAccountingPoliciesGeneralRangeofDepreciableandAmortizablePropertyandEquipmentLivesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7a49196c-e1a0-42eb-bd9c-9e942fa3f24c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_d56c2797-913d-4681-bdfb-1d6ca8e6dd31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7a49196c-e1a0-42eb-bd9c-9e942fa3f24c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_d56c2797-913d-4681-bdfb-1d6ca8e6dd31" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8698a242-7355-4549-bb16-1cfc12bf42e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7a49196c-e1a0-42eb-bd9c-9e942fa3f24c" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8698a242-7355-4549-bb16-1cfc12bf42e9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2efc86ff-c30b-44b5-b415-5a015b6e3e2f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8698a242-7355-4549-bb16-1cfc12bf42e9" xlink:to="loc_srt_RangeAxis_2efc86ff-c30b-44b5-b415-5a015b6e3e2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2efc86ff-c30b-44b5-b415-5a015b6e3e2f_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_2efc86ff-c30b-44b5-b415-5a015b6e3e2f" xlink:to="loc_srt_RangeMember_2efc86ff-c30b-44b5-b415-5a015b6e3e2f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_83b42a97-e036-4b62-b2d9-93f21ccc5618" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_2efc86ff-c30b-44b5-b415-5a015b6e3e2f" xlink:to="loc_srt_RangeMember_83b42a97-e036-4b62-b2d9-93f21ccc5618" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_1b1718a4-4f1f-47c3-9901-8eec21750f36" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_83b42a97-e036-4b62-b2d9-93f21ccc5618" xlink:to="loc_srt_MinimumMember_1b1718a4-4f1f-47c3-9901-8eec21750f36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_403acde6-8073-43cb-81b3-e7c745182cea" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_83b42a97-e036-4b62-b2d9-93f21ccc5618" xlink:to="loc_srt_MaximumMember_403acde6-8073-43cb-81b3-e7c745182cea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_bb7379b7-678d-4986-8d71-72762c33ec33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8698a242-7355-4549-bb16-1cfc12bf42e9" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_bb7379b7-678d-4986-8d71-72762c33ec33" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_bb7379b7-678d-4986-8d71-72762c33ec33_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_bb7379b7-678d-4986-8d71-72762c33ec33" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_bb7379b7-678d-4986-8d71-72762c33ec33_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2487e568-f166-4e33-bc28-b7b69c3a006a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_bb7379b7-678d-4986-8d71-72762c33ec33" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2487e568-f166-4e33-bc28-b7b69c3a006a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_118f5194-e6e1-4230-85b0-e83d8a169056" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2487e568-f166-4e33-bc28-b7b69c3a006a" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_118f5194-e6e1-4230-85b0-e83d8a169056" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdsAndLeaseholdImprovementsMember_9aba3e11-598a-45c0-94ee-8a0dcc520a33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseholdsAndLeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2487e568-f166-4e33-bc28-b7b69c3a006a" xlink:to="loc_us-gaap_LeaseholdsAndLeaseholdImprovementsMember_9aba3e11-598a-45c0-94ee-8a0dcc520a33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EquipmentAndFixturesMember_d3baa1b8-f279-44ce-aa6a-018d1430a923" xlink:href="din-20221231.xsd#din_EquipmentAndFixturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2487e568-f166-4e33-bc28-b7b69c3a006a" xlink:to="loc_din_EquipmentAndFixturesMember_d3baa1b8-f279-44ce-aa6a-018d1430a923" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_InternalUseSoftwareMember_ea41e5c5-af40-4d8c-9fb4-daf86d4af857" xlink:href="din-20221231.xsd#din_InternalUseSoftwareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2487e568-f166-4e33-bc28-b7b69c3a006a" xlink:to="loc_din_InternalUseSoftwareMember_ea41e5c5-af40-4d8c-9fb4-daf86d4af857" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesFairValueofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesFairValueofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesFairValueofFinancialInstrumentsDetails" xlink:type="extended" id="i7867c08e9a834faf8d725cc042cf1916_BasisofPresentationandSummaryofSignificantAccountingPoliciesFairValueofFinancialInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_73d3b66f-4859-4251-ae79-388d9cdcb5bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_af7ad550-e069-4ed3-9732-0b6bbaddcf08" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_73d3b66f-4859-4251-ae79-388d9cdcb5bf" xlink:to="loc_us-gaap_LongTermDebtFairValue_af7ad550-e069-4ed3-9732-0b6bbaddcf08" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8e6846da-0022-416c-9e7b-71326d9b3c9e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_73d3b66f-4859-4251-ae79-388d9cdcb5bf" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8e6846da-0022-416c-9e7b-71326d9b3c9e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_655278e7-d1b5-4f6c-8425-595b20886937" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8e6846da-0022-416c-9e7b-71326d9b3c9e" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_655278e7-d1b5-4f6c-8425-595b20886937" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_655278e7-d1b5-4f6c-8425-595b20886937_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_655278e7-d1b5-4f6c-8425-595b20886937" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_655278e7-d1b5-4f6c-8425-595b20886937_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_525f3ae7-3d00-4ef9-b1ff-3bf1e36f9cef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_655278e7-d1b5-4f6c-8425-595b20886937" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_525f3ae7-3d00-4ef9-b1ff-3bf1e36f9cef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_4ccf7ebd-073f-4e20-baa5-4846a9e0df82" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_525f3ae7-3d00-4ef9-b1ff-3bf1e36f9cef" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_4ccf7ebd-073f-4e20-baa5-4846a9e0df82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_bf2b30c7-9242-4f41-8d43-23554c7e791a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_4ccf7ebd-073f-4e20-baa5-4846a9e0df82" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_bf2b30c7-9242-4f41-8d43-23554c7e791a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_c7635937-85a7-4c84-af2d-ff772e52adb4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_4ccf7ebd-073f-4e20-baa5-4846a9e0df82" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_c7635937-85a7-4c84-af2d-ff772e52adb4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_30d78a0d-691f-43f2-a998-c70ff450934a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8e6846da-0022-416c-9e7b-71326d9b3c9e" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_30d78a0d-691f-43f2-a998-c70ff450934a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_30d78a0d-691f-43f2-a998-c70ff450934a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_30d78a0d-691f-43f2-a998-c70ff450934a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_30d78a0d-691f-43f2-a998-c70ff450934a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1d3bfa9b-f58d-47e6-aaee-be4ec74c3eda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_30d78a0d-691f-43f2-a998-c70ff450934a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1d3bfa9b-f58d-47e6-aaee-be4ec74c3eda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_974464d6-2ceb-4a92-9bd8-a571c066f020" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1d3bfa9b-f58d-47e6-aaee-be4ec74c3eda" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_974464d6-2ceb-4a92-9bd8-a571c066f020" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_529880e4-3d7b-4fd2-aaf8-cec0c457443d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8e6846da-0022-416c-9e7b-71326d9b3c9e" xlink:to="loc_us-gaap_DebtInstrumentAxis_529880e4-3d7b-4fd2-aaf8-cec0c457443d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_529880e4-3d7b-4fd2-aaf8-cec0c457443d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_529880e4-3d7b-4fd2-aaf8-cec0c457443d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_529880e4-3d7b-4fd2-aaf8-cec0c457443d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_c62d9406-d109-4459-9686-819dd95cfb0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_529880e4-3d7b-4fd2-aaf8-cec0c457443d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_c62d9406-d109-4459-9686-819dd95cfb0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember_106dbd7a-80e3-4a30-ac62-9d1e462fe508" xlink:href="din-20221231.xsd#din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c62d9406-d109-4459-9686-819dd95cfb0e" xlink:to="loc_din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember_106dbd7a-80e3-4a30-ac62-9d1e462fe508" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/RevenueDisaggregationofFranchiseRevenuebyMajorTypeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#RevenueDisaggregationofFranchiseRevenuebyMajorTypeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/RevenueDisaggregationofFranchiseRevenuebyMajorTypeDetails" xlink:type="extended" id="i7ad89ce6421f4fbca715235e983aa231_RevenueDisaggregationofFranchiseRevenuebyMajorTypeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_ac7f2442-0201-425c-a0e9-d80aa1f26cf0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_159d87dd-4d89-45de-9b9c-f57b70fac8e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_ac7f2442-0201-425c-a0e9-d80aa1f26cf0" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_159d87dd-4d89-45de-9b9c-f57b70fac8e9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_a44e07ff-27c1-46a2-8e79-e9455cb8d094" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_ac7f2442-0201-425c-a0e9-d80aa1f26cf0" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_a44e07ff-27c1-46a2-8e79-e9455cb8d094" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_2658f585-8a0b-437d-b04b-63d5d1c1f6d2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_a44e07ff-27c1-46a2-8e79-e9455cb8d094" xlink:to="loc_srt_ProductOrServiceAxis_2658f585-8a0b-437d-b04b-63d5d1c1f6d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_2658f585-8a0b-437d-b04b-63d5d1c1f6d2_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_2658f585-8a0b-437d-b04b-63d5d1c1f6d2" xlink:to="loc_srt_ProductsAndServicesDomain_2658f585-8a0b-437d-b04b-63d5d1c1f6d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_36324acc-f3a5-4e2b-a18e-7296205e1eb2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_2658f585-8a0b-437d-b04b-63d5d1c1f6d2" xlink:to="loc_srt_ProductsAndServicesDomain_36324acc-f3a5-4e2b-a18e-7296205e1eb2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorMember_fdd0977c-0654-467e-82c8-c4fc6c925810" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_36324acc-f3a5-4e2b-a18e-7296205e1eb2" xlink:to="loc_us-gaap_FranchisorMember_fdd0977c-0654-467e-82c8-c4fc6c925810" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RoyaltiesMember_3de20924-1301-45e8-b501-3868cb3c4463" xlink:href="din-20221231.xsd#din_RoyaltiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorMember_fdd0977c-0654-467e-82c8-c4fc6c925810" xlink:to="loc_din_RoyaltiesMember_3de20924-1301-45e8-b501-3868cb3c4463" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvertisingMember_7c2800f8-81f1-44c5-ae08-a9cb58e11bab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdvertisingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorMember_fdd0977c-0654-467e-82c8-c4fc6c925810" xlink:to="loc_us-gaap_AdvertisingMember_7c2800f8-81f1-44c5-ae08-a9cb58e11bab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_PancakeAndWaffleDryMixMember_a6a6b840-7b28-4c16-a7a5-fdb15fa79fc8" xlink:href="din-20221231.xsd#din_PancakeAndWaffleDryMixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorMember_fdd0977c-0654-467e-82c8-c4fc6c925810" xlink:to="loc_din_PancakeAndWaffleDryMixMember_a6a6b840-7b28-4c16-a7a5-fdb15fa79fc8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FranchiseAndDevelopmentFeesMember_84941abf-9bf8-4e96-b6ac-b89d259c9c41" xlink:href="din-20221231.xsd#din_FranchiseAndDevelopmentFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorMember_fdd0977c-0654-467e-82c8-c4fc6c925810" xlink:to="loc_din_FranchiseAndDevelopmentFeesMember_84941abf-9bf8-4e96-b6ac-b89d259c9c41" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/RevenueNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#RevenueNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/RevenueNarrativeDetails" xlink:type="extended" id="i85214571a52d436a9607221bec3e61db_RevenueNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_063c20b5-c044-4778-85de-7fd07d76a6e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_5eb4615f-0619-4f54-860b-5c36e95b2295" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_063c20b5-c044-4778-85de-7fd07d76a6e5" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_5eb4615f-0619-4f54-860b-5c36e95b2295" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss_7e251a76-1970-4b61-b4d4-4d98e3e101bc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_063c20b5-c044-4778-85de-7fd07d76a6e5" xlink:to="loc_us-gaap_ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss_7e251a76-1970-4b61-b4d4-4d98e3e101bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_a88d49b0-2246-416b-a0f8-f798bd489690" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_063c20b5-c044-4778-85de-7fd07d76a6e5" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_a88d49b0-2246-416b-a0f8-f798bd489690" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_91b3c011-3cfd-475e-be0e-b817d99fbcb8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_a88d49b0-2246-416b-a0f8-f798bd489690" xlink:to="loc_srt_ProductOrServiceAxis_91b3c011-3cfd-475e-be0e-b817d99fbcb8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_91b3c011-3cfd-475e-be0e-b817d99fbcb8_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_91b3c011-3cfd-475e-be0e-b817d99fbcb8" xlink:to="loc_srt_ProductsAndServicesDomain_91b3c011-3cfd-475e-be0e-b817d99fbcb8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_6ad0adee-c916-40f3-b481-22b30a9e0d62" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_91b3c011-3cfd-475e-be0e-b817d99fbcb8" xlink:to="loc_srt_ProductsAndServicesDomain_6ad0adee-c916-40f3-b481-22b30a9e0d62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FranchiseRevenueTransactionsMember_9699563d-a237-4cc6-93a4-ff6a7455f724" xlink:href="din-20221231.xsd#din_FranchiseRevenueTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_6ad0adee-c916-40f3-b481-22b30a9e0d62" xlink:to="loc_din_FranchiseRevenueTransactionsMember_9699563d-a237-4cc6-93a4-ff6a7455f724" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/RevenueDeferredrevenueexpectedtoberecognizedDetails" xlink:type="simple" xlink:href="din-20221231.xsd#RevenueDeferredrevenueexpectedtoberecognizedDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/RevenueDeferredrevenueexpectedtoberecognizedDetails" xlink:type="extended" id="i7eb1b1a0a0a345a2a8482cd99cd8a4b9_RevenueDeferredrevenueexpectedtoberecognizedDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_4b354ac8-5100-46a1-8232-dd20b4cc623d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_34cf10c6-60a5-4beb-8195-79cf74a6a44b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_4b354ac8-5100-46a1-8232-dd20b4cc623d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_34cf10c6-60a5-4beb-8195-79cf74a6a44b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7a584e05-f8b9-4915-82a0-503cf5adfece" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_4b354ac8-5100-46a1-8232-dd20b4cc623d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7a584e05-f8b9-4915-82a0-503cf5adfece" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_572b949d-e758-4d57-b8f7-535e51ca5051" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7a584e05-f8b9-4915-82a0-503cf5adfece" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_572b949d-e758-4d57-b8f7-535e51ca5051" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/RevenueDeferredrevenueexpectedtoberecognizedDetails_1" xlink:type="simple" xlink:href="din-20221231.xsd#RevenueDeferredrevenueexpectedtoberecognizedDetails_1"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/RevenueDeferredrevenueexpectedtoberecognizedDetails_1" xlink:type="extended" id="i178dbdb8a7b3406a9d6b423e927bdae5_RevenueDeferredrevenueexpectedtoberecognizedDetails_1">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_4b354ac8-5100-46a1-8232-dd20b4cc623d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_34cf10c6-60a5-4beb-8195-79cf74a6a44b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_4b354ac8-5100-46a1-8232-dd20b4cc623d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_34cf10c6-60a5-4beb-8195-79cf74a6a44b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7a584e05-f8b9-4915-82a0-503cf5adfece" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_4b354ac8-5100-46a1-8232-dd20b4cc623d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7a584e05-f8b9-4915-82a0-503cf5adfece" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#CurrentExpectedCreditLossesCECLNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLNarrativeDetails" xlink:type="extended" id="i7e73dada7b2149489cfaaf64d9eaa896_CurrentExpectedCreditLossesCECLNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivableTerm_ff265f4f-b1b2-4d40-919f-3377a31eaa7c" xlink:href="din-20221231.xsd#din_NotesReceivableTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:to="loc_din_NotesReceivableTerm_ff265f4f-b1b2-4d40-919f-3377a31eaa7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivableInterestRate_a2f18f59-9feb-475d-a6c7-eab5cf21ad1f" xlink:href="din-20221231.xsd#din_NotesReceivableInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:to="loc_din_NotesReceivableInterestRate_a2f18f59-9feb-475d-a6c7-eab5cf21ad1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndFinancingReceivableAllowanceForCreditLoss_590fa26f-7985-4c5a-950c-3144a74825c4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsAndFinancingReceivableAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:to="loc_us-gaap_AccountsAndFinancingReceivableAllowanceForCreditLoss_590fa26f-7985-4c5a-950c-3144a74825c4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EquipmentLeaseReceivableAverageAnnualInterestRate_0938883a-4e7a-44f6-96b8-dcdd0b4be74b" xlink:href="din-20221231.xsd#din_EquipmentLeaseReceivableAverageAnnualInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:to="loc_din_EquipmentLeaseReceivableAverageAnnualInterestRate_0938883a-4e7a-44f6-96b8-dcdd0b4be74b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_23bab5fb-72b6-4052-a271-62b3214d3c50" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_23bab5fb-72b6-4052-a271-62b3214d3c50" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfPropertiesSubjectToGroundLeases_c153bbb1-7b92-4871-b05c-1261e7d9552f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfPropertiesSubjectToGroundLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:to="loc_us-gaap_NumberOfPropertiesSubjectToGroundLeases_c153bbb1-7b92-4871-b05c-1261e7d9552f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_86e609b5-3eea-46e2-b99c-49a72a9147d8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_86e609b5-3eea-46e2-b99c-49a72a9147d8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_3ada25be-4a2e-48b5-831e-1e32f2a44667" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ceb72435-29e1-4a2a-983d-a38cb1012a6d" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_3ada25be-4a2e-48b5-831e-1e32f2a44667" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_d96056b0-3c8e-4e8c-8603-ddc4f03f6683" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_3ada25be-4a2e-48b5-831e-1e32f2a44667" xlink:to="loc_srt_RangeAxis_d96056b0-3c8e-4e8c-8603-ddc4f03f6683" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d96056b0-3c8e-4e8c-8603-ddc4f03f6683_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_d96056b0-3c8e-4e8c-8603-ddc4f03f6683" xlink:to="loc_srt_RangeMember_d96056b0-3c8e-4e8c-8603-ddc4f03f6683_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3aca87cf-3b1f-4fb8-8244-94d62860f884" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_d96056b0-3c8e-4e8c-8603-ddc4f03f6683" xlink:to="loc_srt_RangeMember_3aca87cf-3b1f-4fb8-8244-94d62860f884" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_b9c846b6-52bc-4ed6-9458-4444eebea04f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3aca87cf-3b1f-4fb8-8244-94d62860f884" xlink:to="loc_srt_MinimumMember_b9c846b6-52bc-4ed6-9458-4444eebea04f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_e55b2ec6-7ffb-4cfb-8a36-97f96793c8a9" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3aca87cf-3b1f-4fb8-8244-94d62860f884" xlink:to="loc_srt_MaximumMember_e55b2ec6-7ffb-4cfb-8a36-97f96793c8a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_77af9e9a-1e61-4e13-80eb-eaf0cf5d2f1e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_3ada25be-4a2e-48b5-831e-1e32f2a44667" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_77af9e9a-1e61-4e13-80eb-eaf0cf5d2f1e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_77af9e9a-1e61-4e13-80eb-eaf0cf5d2f1e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_77af9e9a-1e61-4e13-80eb-eaf0cf5d2f1e" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_77af9e9a-1e61-4e13-80eb-eaf0cf5d2f1e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_026a3f70-93ab-4a94-b317-be795c7b6276" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_77af9e9a-1e61-4e13-80eb-eaf0cf5d2f1e" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_026a3f70-93ab-4a94-b317-be795c7b6276" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivablePortfolioSegmentMember_6ee693a3-329e-4871-b465-dee2dd5f79a7" xlink:href="din-20221231.xsd#din_NotesReceivablePortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_026a3f70-93ab-4a94-b317-be795c7b6276" xlink:to="loc_din_NotesReceivablePortfolioSegmentMember_6ee693a3-329e-4871-b465-dee2dd5f79a7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EquipmentNotesPortfolioSegmentMember_ea0ef4b3-3e31-410b-af8f-a522940e997f" xlink:href="din-20221231.xsd#din_EquipmentNotesPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_026a3f70-93ab-4a94-b317-be795c7b6276" xlink:to="loc_din_EquipmentNotesPortfolioSegmentMember_ea0ef4b3-3e31-410b-af8f-a522940e997f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DirectFinancingLeasesMember_04e9c5be-2306-44ca-b195-71b86415af9c" xlink:href="din-20221231.xsd#din_DirectFinancingLeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_026a3f70-93ab-4a94-b317-be795c7b6276" xlink:to="loc_din_DirectFinancingLeasesMember_04e9c5be-2306-44ca-b195-71b86415af9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_b6f66c41-60e4-414c-9db0-47df1aa94d37" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_3ada25be-4a2e-48b5-831e-1e32f2a44667" xlink:to="loc_dei_LegalEntityAxis_b6f66c41-60e4-414c-9db0-47df1aa94d37" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b6f66c41-60e4-414c-9db0-47df1aa94d37_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_b6f66c41-60e4-414c-9db0-47df1aa94d37" xlink:to="loc_dei_EntityDomain_b6f66c41-60e4-414c-9db0-47df1aa94d37_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7ba8ed31-8cec-42b4-b381-2833059c62ec" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_b6f66c41-60e4-414c-9db0-47df1aa94d37" xlink:to="loc_dei_EntityDomain_7ba8ed31-8cec-42b4-b381-2833059c62ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_b9ff5206-a8f6-4976-a33f-83634d8aa1df" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7ba8ed31-8cec-42b4-b381-2833059c62ec" xlink:to="loc_din_ApplebeesMember_b9ff5206-a8f6-4976-a33f-83634d8aa1df" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_IhopMember_a20f4bd7-8de2-4e91-a3d0-25c61f9e22fc" xlink:href="din-20221231.xsd#din_IhopMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7ba8ed31-8cec-42b4-b381-2833059c62ec" xlink:to="loc_din_IhopMember_a20f4bd7-8de2-4e91-a3d0-25c61f9e22fc" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLComponentsofReceivablesDetails" xlink:type="simple" xlink:href="din-20221231.xsd#CurrentExpectedCreditLossesCECLComponentsofReceivablesDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLComponentsofReceivablesDetails" xlink:type="extended" id="i6d099e1c83b34b0dbebcab76058c8fca_CurrentExpectedCreditLossesCECLComponentsofReceivablesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ce824b49-c496-4d04-99fc-35d513a847bc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ce824b49-c496-4d04-99fc-35d513a847bc" xlink:to="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_d5f2d4cd-b4d0-49a5-8760-e597829b9ad4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_d5f2d4cd-b4d0-49a5-8760-e597829b9ad4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_GiftCardReceivables_3f083de5-ba29-416f-a386-69e4bc97bf0f" xlink:href="din-20221231.xsd#din_GiftCardReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_din_GiftCardReceivables_3f083de5-ba29-416f-a386-69e4bc97bf0f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivable_28791aa3-26d3-4106-9b6e-61588d5942ed" xlink:href="din-20221231.xsd#din_NotesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_din_NotesReceivable_28791aa3-26d3-4106-9b6e-61588d5942ed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_eca6acc9-6f08-4c83-8baf-7a41f1705465" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_us-gaap_NotesReceivableGross_eca6acc9-6f08-4c83-8baf-7a41f1705465" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_AccountsAndFinancingReceivableBeforeAllowanceForCreditLoss_d4838c9f-a87a-46be-934b-8d8cb088ce3f" xlink:href="din-20221231.xsd#din_AccountsAndFinancingReceivableBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_din_AccountsAndFinancingReceivableBeforeAllowanceForCreditLoss_d4838c9f-a87a-46be-934b-8d8cb088ce3f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables_9318bf58-65d7-4afc-b3ef-202839bd3c12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables_9318bf58-65d7-4afc-b3ef-202839bd3c12" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_592671c1-bf02-4556-b594-fca6fc76e564" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_592671c1-bf02-4556-b594-fca6fc76e564" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableNetCurrent_62804f85-c3f4-4a77-990e-8c3c64f43e0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesAndLoansReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_us-gaap_AccountsNotesAndLoansReceivableNetCurrent_62804f85-c3f4-4a77-990e-8c3c64f43e0e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent_9eee8ac2-9e93-4afc-a546-b9a38183c3b8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract_b850578b-4ba9-4a76-a2bb-20bf38cadf7c" xlink:to="loc_us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent_9eee8ac2-9e93-4afc-a546-b9a38183c3b8" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_ed50db1e-b9a2-4d2d-8b8c-24340bdbdb59" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_ce824b49-c496-4d04-99fc-35d513a847bc" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_ed50db1e-b9a2-4d2d-8b8c-24340bdbdb59" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_76cddf54-0198-48eb-8a08-d82ef6acbd68" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_ed50db1e-b9a2-4d2d-8b8c-24340bdbdb59" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_76cddf54-0198-48eb-8a08-d82ef6acbd68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_76cddf54-0198-48eb-8a08-d82ef6acbd68_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_76cddf54-0198-48eb-8a08-d82ef6acbd68" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_76cddf54-0198-48eb-8a08-d82ef6acbd68_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9a9f0100-bf7c-4bbf-b6b6-2d693a9462c9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_76cddf54-0198-48eb-8a08-d82ef6acbd68" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9a9f0100-bf7c-4bbf-b6b6-2d693a9462c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EquipmentLeasesReceivableMember_c36ed22f-8d2c-43fe-8bd8-8804bd5e119b" xlink:href="din-20221231.xsd#din_EquipmentLeasesReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9a9f0100-bf7c-4bbf-b6b6-2d693a9462c9" xlink:to="loc_din_EquipmentLeasesReceivableMember_c36ed22f-8d2c-43fe-8bd8-8804bd5e119b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DirectFinancingLeasesMember_4f755714-1b3f-4d82-99dc-b4bb78e64591" xlink:href="din-20221231.xsd#din_DirectFinancingLeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9a9f0100-bf7c-4bbf-b6b6-2d693a9462c9" xlink:to="loc_din_DirectFinancingLeasesMember_4f755714-1b3f-4d82-99dc-b4bb78e64591" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_OtherReceivablesMember_d842eca8-043a-4b60-ac02-bbc142e2a987" xlink:href="din-20221231.xsd#din_OtherReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9a9f0100-bf7c-4bbf-b6b6-2d693a9462c9" xlink:to="loc_din_OtherReceivablesMember_d842eca8-043a-4b60-ac02-bbc142e2a987" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLChangesintheAllowanceforCreditLossesDetails" xlink:type="simple" xlink:href="din-20221231.xsd#CurrentExpectedCreditLossesCECLChangesintheAllowanceforCreditLossesDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLChangesintheAllowanceforCreditLossesDetails" xlink:type="extended" id="ie3c1c6e0fda8422c9688b1fc264eacb4_CurrentExpectedCreditLossesCECLChangesintheAllowanceforCreditLossesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_fbafe6be-ec0f-4d7c-8f15-b897161f8f2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_870baa6d-4171-4ffd-9d7d-edd0617c45c4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_fbafe6be-ec0f-4d7c-8f15-b897161f8f2d" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_870baa6d-4171-4ffd-9d7d-edd0617c45c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_05f4c6b7-d402-4962-9a97-6ec8757ac137" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_870baa6d-4171-4ffd-9d7d-edd0617c45c4" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_05f4c6b7-d402-4962-9a97-6ec8757ac137" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_3331b51b-1df2-4ab6-ba04-0d7db60e79fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProvisionForLoanLossesExpensed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_870baa6d-4171-4ffd-9d7d-edd0617c45c4" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_3331b51b-1df2-4ab6-ba04-0d7db60e79fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FinancingReceivableAllowanceforCreditLossAdvertisingProvisionAdjustment_080a6833-a873-4eb8-8334-6492b96a4258" xlink:href="din-20221231.xsd#din_FinancingReceivableAllowanceforCreditLossAdvertisingProvisionAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_870baa6d-4171-4ffd-9d7d-edd0617c45c4" xlink:to="loc_din_FinancingReceivableAllowanceforCreditLossAdvertisingProvisionAdjustment_080a6833-a873-4eb8-8334-6492b96a4258" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_a0290b25-858e-4f7d-82b8-05a787e64804" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_870baa6d-4171-4ffd-9d7d-edd0617c45c4" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_a0290b25-858e-4f7d-82b8-05a787e64804" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_72a2b871-10ed-4490-bb93-09a8074f10d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_870baa6d-4171-4ffd-9d7d-edd0617c45c4" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_72a2b871-10ed-4490-bb93-09a8074f10d9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_e02a388f-2fee-4ebe-a243-a0ee58a23b8a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_0ff4739d-912f-414e-931c-114b7e4655f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_fbafe6be-ec0f-4d7c-8f15-b897161f8f2d" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_0ff4739d-912f-414e-931c-114b7e4655f1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_91abd417-04f2-4fb6-baa7-d0ac6a4c18ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_0ff4739d-912f-414e-931c-114b7e4655f1" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_91abd417-04f2-4fb6-baa7-d0ac6a4c18ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_91abd417-04f2-4fb6-baa7-d0ac6a4c18ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_91abd417-04f2-4fb6-baa7-d0ac6a4c18ed" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_91abd417-04f2-4fb6-baa7-d0ac6a4c18ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_68448470-0c0d-451c-bbd8-63fd60321232" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_91abd417-04f2-4fb6-baa7-d0ac6a4c18ed" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_68448470-0c0d-451c-bbd8-63fd60321232" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_AccountsReceivablePortfolioSegmentMember_be8d83dd-55ad-4a07-a8b8-273210380b29" xlink:href="din-20221231.xsd#din_AccountsReceivablePortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_68448470-0c0d-451c-bbd8-63fd60321232" xlink:to="loc_din_AccountsReceivablePortfolioSegmentMember_be8d83dd-55ad-4a07-a8b8-273210380b29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivableCurrentPortfolioSegmentMember_85d6e637-cc9f-49be-817b-f4ed73d43daa" xlink:href="din-20221231.xsd#din_NotesReceivableCurrentPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_68448470-0c0d-451c-bbd8-63fd60321232" xlink:to="loc_din_NotesReceivableCurrentPortfolioSegmentMember_85d6e637-cc9f-49be-817b-f4ed73d43daa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivableNoncurrentPortfolioSegmentMember_c4f1a338-fea6-4fb5-84de-34edfd9ca730" xlink:href="din-20221231.xsd#din_NotesReceivableNoncurrentPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_68448470-0c0d-451c-bbd8-63fd60321232" xlink:to="loc_din_NotesReceivableNoncurrentPortfolioSegmentMember_c4f1a338-fea6-4fb5-84de-34edfd9ca730" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LeaseReceivablePortfolioSegmentMember_8ff2623e-0199-47b8-b9e4-ec4eb2777b0a" xlink:href="din-20221231.xsd#din_LeaseReceivablePortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_68448470-0c0d-451c-bbd8-63fd60321232" xlink:to="loc_din_LeaseReceivablePortfolioSegmentMember_8ff2623e-0199-47b8-b9e4-ec4eb2777b0a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EquipmentNotesPortfolioSegmentMember_68e457b0-b955-4fba-936f-eda24b5280d2" xlink:href="din-20221231.xsd#din_EquipmentNotesPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_68448470-0c0d-451c-bbd8-63fd60321232" xlink:to="loc_din_EquipmentNotesPortfolioSegmentMember_68e457b0-b955-4fba-936f-eda24b5280d2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_OtherPortfolioSegmentMember_cd37d38a-2937-4c74-a457-fe338d5c7217" xlink:href="din-20221231.xsd#din_OtherPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_68448470-0c0d-451c-bbd8-63fd60321232" xlink:to="loc_din_OtherPortfolioSegmentMember_cd37d38a-2937-4c74-a457-fe338d5c7217" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLDelinquencyStatusofReceivablesDetails" xlink:type="simple" xlink:href="din-20221231.xsd#CurrentExpectedCreditLossesCECLDelinquencyStatusofReceivablesDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLDelinquencyStatusofReceivablesDetails" xlink:type="extended" id="i72df288947fb4e73a923327f1db0e770_CurrentExpectedCreditLossesCECLDelinquencyStatusofReceivablesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_e8ac6abd-4d77-45f1-b5c9-667f4cc527c3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_640588a3-8af9-4a9b-b67a-d3a9978f84fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_e8ac6abd-4d77-45f1-b5c9-667f4cc527c3" xlink:to="loc_us-gaap_NotesReceivableGross_640588a3-8af9-4a9b-b67a-d3a9978f84fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_13ebba04-d3ab-4c63-8ce6-5eac931b5ecf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFinancingReceivablesPastDueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_e8ac6abd-4d77-45f1-b5c9-667f4cc527c3" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_13ebba04-d3ab-4c63-8ce6-5eac931b5ecf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_9f7cb17f-d239-4925-8c63-312465bbc064" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_13ebba04-d3ab-4c63-8ce6-5eac931b5ecf" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_9f7cb17f-d239-4925-8c63-312465bbc064" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_9f7cb17f-d239-4925-8c63-312465bbc064_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_9f7cb17f-d239-4925-8c63-312465bbc064" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_9f7cb17f-d239-4925-8c63-312465bbc064_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_4c4ba52c-fb45-4df4-a40b-6c7c2b38c1da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_9f7cb17f-d239-4925-8c63-312465bbc064" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_4c4ba52c-fb45-4df4-a40b-6c7c2b38c1da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivableCurrentPortfolioSegmentMember_be8f6c2b-509a-4d5e-adf1-f82cae87baea" xlink:href="din-20221231.xsd#din_NotesReceivableCurrentPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_4c4ba52c-fb45-4df4-a40b-6c7c2b38c1da" xlink:to="loc_din_NotesReceivableCurrentPortfolioSegmentMember_be8f6c2b-509a-4d5e-adf1-f82cae87baea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivableNoncurrentPortfolioSegmentMember_fea4ad47-2e72-4219-bfc7-a6ec62972653" xlink:href="din-20221231.xsd#din_NotesReceivableNoncurrentPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_4c4ba52c-fb45-4df4-a40b-6c7c2b38c1da" xlink:to="loc_din_NotesReceivableNoncurrentPortfolioSegmentMember_fea4ad47-2e72-4219-bfc7-a6ec62972653" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LeaseReceivablePortfolioSegmentMember_7e890374-e88e-432f-b86d-2514702c3652" xlink:href="din-20221231.xsd#din_LeaseReceivablePortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_4c4ba52c-fb45-4df4-a40b-6c7c2b38c1da" xlink:to="loc_din_LeaseReceivablePortfolioSegmentMember_7e890374-e88e-432f-b86d-2514702c3652" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EquipmentNotesPortfolioSegmentMember_ff2eba55-7ced-4d32-bbda-2fe0f934d15e" xlink:href="din-20221231.xsd#din_EquipmentNotesPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_4c4ba52c-fb45-4df4-a40b-6c7c2b38c1da" xlink:to="loc_din_EquipmentNotesPortfolioSegmentMember_ff2eba55-7ced-4d32-bbda-2fe0f934d15e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_OtherPortfolioSegmentMember_e95dfbb5-fe5e-4766-93a8-eb36327eafe0" xlink:href="din-20221231.xsd#din_OtherPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_4c4ba52c-fb45-4df4-a40b-6c7c2b38c1da" xlink:to="loc_din_OtherPortfolioSegmentMember_e95dfbb5-fe5e-4766-93a8-eb36327eafe0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_a487de69-9a1c-4335-8b7d-baf8a7642b26" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_13ebba04-d3ab-4c63-8ce6-5eac931b5ecf" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_a487de69-9a1c-4335-8b7d-baf8a7642b26" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_a487de69-9a1c-4335-8b7d-baf8a7642b26_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_a487de69-9a1c-4335-8b7d-baf8a7642b26" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_a487de69-9a1c-4335-8b7d-baf8a7642b26_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_441b0fd5-dc94-4015-b353-29e6c6e0c349" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_a487de69-9a1c-4335-8b7d-baf8a7642b26" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_441b0fd5-dc94-4015-b353-29e6c6e0c349" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialAssetNotPastDueMember_1f9760ca-0b4a-4554-a458-3c9c3193c1b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialAssetNotPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_441b0fd5-dc94-4015-b353-29e6c6e0c349" xlink:to="loc_us-gaap_FinancialAssetNotPastDueMember_1f9760ca-0b4a-4554-a458-3c9c3193c1b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_961c52bc-c1ed-486a-846f-8770a117b44e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivables30To59DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_441b0fd5-dc94-4015-b353-29e6c6e0c349" xlink:to="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_961c52bc-c1ed-486a-846f-8770a117b44e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_572eefbf-dc09-4500-aa1c-2cb0119d5fc9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivables60To89DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_441b0fd5-dc94-4015-b353-29e6c6e0c349" xlink:to="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_572eefbf-dc09-4500-aa1c-2cb0119d5fc9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FinancialAsset90to119DaysPastDueMember_9e4518a6-b61f-48cc-8643-fded9cbda6c4" xlink:href="din-20221231.xsd#din_FinancialAsset90to119DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_441b0fd5-dc94-4015-b353-29e6c6e0c349" xlink:to="loc_din_FinancialAsset90to119DaysPastDueMember_9e4518a6-b61f-48cc-8643-fded9cbda6c4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FinancialAsset120OrMoreDaysPastDueMember_aeabc40e-bcc7-4941-a2ee-43ed26650d9a" xlink:href="din-20221231.xsd#din_FinancialAsset120OrMoreDaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_441b0fd5-dc94-4015-b353-29e6c6e0c349" xlink:to="loc_din_FinancialAsset120OrMoreDaysPastDueMember_aeabc40e-bcc7-4941-a2ee-43ed26650d9a" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLYearofOriginationofFinancingReceivablesDetails" xlink:type="simple" xlink:href="din-20221231.xsd#CurrentExpectedCreditLossesCECLYearofOriginationofFinancingReceivablesDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/CurrentExpectedCreditLossesCECLYearofOriginationofFinancingReceivablesDetails" xlink:type="extended" id="ib9a0e0ef33e043fe9fde7a195665650b_CurrentExpectedCreditLossesCECLYearofOriginationofFinancingReceivablesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_e4e86073-f3d3-4c10-bd7b-3ba40e4ec738" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_e4e86073-f3d3-4c10-bd7b-3ba40e4ec738" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_d13e2c98-fe35-457c-80b2-487312641b11" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_d13e2c98-fe35-457c-80b2-487312641b11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_52413502-3f4d-4157-aeaa-42c4d817a4c7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:to="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_52413502-3f4d-4157-aeaa-42c4d817a4c7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_fc7278dd-133d-4fa0-9c7e-0fd66ebb6746" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_fc7278dd-133d-4fa0-9c7e-0fd66ebb6746" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_5dfbc630-564c-4df0-998a-a663a15cdd58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_5dfbc630-564c-4df0-998a-a663a15cdd58" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_193084b7-5a25-4362-aba1-21601b36658e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_193084b7-5a25-4362-aba1-21601b36658e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_9b505f25-6c19-4392-b9b7-7c9ec0540803" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:to="loc_us-gaap_NotesReceivableGross_9b505f25-6c19-4392-b9b7-7c9ec0540803" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_5d9b4891-ce17-4285-94f8-42c1cd31f3db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_03bb51a5-1146-4911-98a2-5fc11be17d02" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_5d9b4891-ce17-4285-94f8-42c1cd31f3db" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_d951d8f7-32d4-454e-82b9-e0971cbd0652" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_5d9b4891-ce17-4285-94f8-42c1cd31f3db" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_d951d8f7-32d4-454e-82b9-e0971cbd0652" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_d951d8f7-32d4-454e-82b9-e0971cbd0652_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_d951d8f7-32d4-454e-82b9-e0971cbd0652" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_d951d8f7-32d4-454e-82b9-e0971cbd0652_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_0c52d839-dd35-46d3-b9cb-94681cfaa41e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_d951d8f7-32d4-454e-82b9-e0971cbd0652" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_0c52d839-dd35-46d3-b9cb-94681cfaa41e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivablePortfolioSegmentsLeaseReceivablePortfolioSegmentAndEquipmentNotesPortfolioSegmentMember_de1866d0-8301-4044-905b-bb697cee4a10" xlink:href="din-20221231.xsd#din_NotesReceivablePortfolioSegmentsLeaseReceivablePortfolioSegmentAndEquipmentNotesPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_0c52d839-dd35-46d3-b9cb-94681cfaa41e" xlink:to="loc_din_NotesReceivablePortfolioSegmentsLeaseReceivablePortfolioSegmentAndEquipmentNotesPortfolioSegmentMember_de1866d0-8301-4044-905b-bb697cee4a10" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NotesReceivableCurrentAndNoncurrentPortfolioSegmentMember_82d0fbda-8996-41c7-8a2b-804897ba0d9e" xlink:href="din-20221231.xsd#din_NotesReceivableCurrentAndNoncurrentPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_NotesReceivablePortfolioSegmentsLeaseReceivablePortfolioSegmentAndEquipmentNotesPortfolioSegmentMember_de1866d0-8301-4044-905b-bb697cee4a10" xlink:to="loc_din_NotesReceivableCurrentAndNoncurrentPortfolioSegmentMember_82d0fbda-8996-41c7-8a2b-804897ba0d9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LeaseReceivablePortfolioSegmentMember_4e454391-b32c-4c2a-bf81-9b2fca3735ee" xlink:href="din-20221231.xsd#din_LeaseReceivablePortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_NotesReceivablePortfolioSegmentsLeaseReceivablePortfolioSegmentAndEquipmentNotesPortfolioSegmentMember_de1866d0-8301-4044-905b-bb697cee4a10" xlink:to="loc_din_LeaseReceivablePortfolioSegmentMember_4e454391-b32c-4c2a-bf81-9b2fca3735ee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EquipmentNotesPortfolioSegmentMember_949ea42c-0fca-4049-9110-005d632dd2be" xlink:href="din-20221231.xsd#din_EquipmentNotesPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_NotesReceivablePortfolioSegmentsLeaseReceivablePortfolioSegmentAndEquipmentNotesPortfolioSegmentMember_de1866d0-8301-4044-905b-bb697cee4a10" xlink:to="loc_din_EquipmentNotesPortfolioSegmentMember_949ea42c-0fca-4049-9110-005d632dd2be" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/PropertyandEquipmentDetails" xlink:type="simple" xlink:href="din-20221231.xsd#PropertyandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/PropertyandEquipmentDetails" xlink:type="extended" id="ifbb57b636595496982564775629696bb_PropertyandEquipmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_e6829c26-eb2b-4f95-88d6-97d54d05a321" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_4b321503-52e2-44c0-9edb-5c1062ba7e2e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_e6829c26-eb2b-4f95-88d6-97d54d05a321" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_4b321503-52e2-44c0-9edb-5c1062ba7e2e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_6e6b35a1-b788-48a2-b882-a8b1a518a04e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_e6829c26-eb2b-4f95-88d6-97d54d05a321" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_6e6b35a1-b788-48a2-b882-a8b1a518a04e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_41ecf02d-e38f-4b47-b9c1-981a916ba026" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_e6829c26-eb2b-4f95-88d6-97d54d05a321" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_41ecf02d-e38f-4b47-b9c1-981a916ba026" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_3995ec56-5cd6-40fd-bc92-875578218500" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_e6829c26-eb2b-4f95-88d6-97d54d05a321" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_3995ec56-5cd6-40fd-bc92-875578218500" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_20d6f97b-9e33-4a11-97ee-5851b5b1297d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_e6829c26-eb2b-4f95-88d6-97d54d05a321" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_20d6f97b-9e33-4a11-97ee-5851b5b1297d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9074a47a-6bad-4e5b-b0c5-9f9f2242e15c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_e6829c26-eb2b-4f95-88d6-97d54d05a321" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9074a47a-6bad-4e5b-b0c5-9f9f2242e15c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f040ff14-2ec9-44e1-94f4-88d70be8c124" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9074a47a-6bad-4e5b-b0c5-9f9f2242e15c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f040ff14-2ec9-44e1-94f4-88d70be8c124" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f040ff14-2ec9-44e1-94f4-88d70be8c124_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f040ff14-2ec9-44e1-94f4-88d70be8c124" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f040ff14-2ec9-44e1-94f4-88d70be8c124_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f040ff14-2ec9-44e1-94f4-88d70be8c124" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdsAndLeaseholdImprovementsMember_2a75476b-689d-4853-bbf6-6589b89be05f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseholdsAndLeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:to="loc_us-gaap_LeaseholdsAndLeaseholdImprovementsMember_2a75476b-689d-4853-bbf6-6589b89be05f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_PropertiesUnderFinanceLeaseMember_7eb5019d-f914-4f51-a55b-1769ba7ab730" xlink:href="din-20221231.xsd#din_PropertiesUnderFinanceLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:to="loc_din_PropertiesUnderFinanceLeaseMember_7eb5019d-f914-4f51-a55b-1769ba7ab730" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EquipmentAndFixturesMember_aba99282-43fa-45e8-94c1-6432190c32a0" xlink:href="din-20221231.xsd#din_EquipmentAndFixturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:to="loc_din_EquipmentAndFixturesMember_aba99282-43fa-45e8-94c1-6432190c32a0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_df27015d-9a75-4ee6-b176-b8957140a860" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_df27015d-9a75-4ee6-b176-b8957140a860" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_5f5a5f24-1f11-4cbb-b209-3a9242073778" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:to="loc_us-gaap_LandMember_5f5a5f24-1f11-4cbb-b209-3a9242073778" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_17b81511-7526-40d0-9805-0b87f01bc914" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SoftwareAndSoftwareDevelopmentCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:to="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_17b81511-7526-40d0-9805-0b87f01bc914" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_81d5703f-a85c-463c-bdf2-34131341bd8b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d529a8d6-cdd9-421e-a79c-70b905e24d0d" xlink:to="loc_us-gaap_ConstructionInProgressMember_81d5703f-a85c-463c-bdf2-34131341bd8b" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/GoodwillNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#GoodwillNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/GoodwillNarrativeDetails" xlink:type="extended" id="i516bff105c4a4bb380636e997311ac8f_GoodwillNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_fb9c3a5d-d9b3-4b4f-9ae1-b685d806a664" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_0f6329e4-08a3-41ab-af5b-7f7bf58c919b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_fb9c3a5d-d9b3-4b4f-9ae1-b685d806a664" xlink:to="loc_us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_0f6329e4-08a3-41ab-af5b-7f7bf58c919b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfRestaurantsRefranchisedAndSold_f8843677-9d95-4750-a2b0-e0da5dbff8f5" xlink:href="din-20221231.xsd#din_NumberOfRestaurantsRefranchisedAndSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_fb9c3a5d-d9b3-4b4f-9ae1-b685d806a664" xlink:to="loc_din_NumberOfRestaurantsRefranchisedAndSold_f8843677-9d95-4750-a2b0-e0da5dbff8f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_8afcd496-306b-482a-9503-266c2c5ece49" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_fb9c3a5d-d9b3-4b4f-9ae1-b685d806a664" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_8afcd496-306b-482a-9503-266c2c5ece49" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_58900d08-9ea0-4a8d-addd-e4faa4c5d2b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_fb9c3a5d-d9b3-4b4f-9ae1-b685d806a664" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_58900d08-9ea0-4a8d-addd-e4faa4c5d2b9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_ccfb8fbe-257b-459c-ab0e-8cc758df3ecf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_fb9c3a5d-d9b3-4b4f-9ae1-b685d806a664" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_ccfb8fbe-257b-459c-ab0e-8cc758df3ecf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureAxis_0598af52-643c-45fd-955e-c0730797b012" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_ccfb8fbe-257b-459c-ab0e-8cc758df3ecf" xlink:to="loc_us-gaap_FranchisorDisclosureAxis_0598af52-643c-45fd-955e-c0730797b012" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_0598af52-643c-45fd-955e-c0730797b012_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_0598af52-643c-45fd-955e-c0730797b012" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_0598af52-643c-45fd-955e-c0730797b012_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_91b71400-7e32-4628-9446-36ef4ab1841d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_0598af52-643c-45fd-955e-c0730797b012" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_91b71400-7e32-4628-9446-36ef4ab1841d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityOperatedUnitsMember_d4721fca-f18a-4186-b36f-9568ab0f7954" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityOperatedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_91b71400-7e32-4628-9446-36ef4ab1841d" xlink:to="loc_us-gaap_EntityOperatedUnitsMember_d4721fca-f18a-4186-b36f-9568ab0f7954" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisedUnitsMember_e233c7d3-432c-4e8d-9baa-4161c89efd3b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_91b71400-7e32-4628-9446-36ef4ab1841d" xlink:to="loc_us-gaap_FranchisedUnitsMember_e233c7d3-432c-4e8d-9baa-4161c89efd3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5e46e05e-92a4-4fb1-819c-1acfdb6e2104" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_ccfb8fbe-257b-459c-ab0e-8cc758df3ecf" xlink:to="loc_dei_LegalEntityAxis_5e46e05e-92a4-4fb1-819c-1acfdb6e2104" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5e46e05e-92a4-4fb1-819c-1acfdb6e2104_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5e46e05e-92a4-4fb1-819c-1acfdb6e2104" xlink:to="loc_dei_EntityDomain_5e46e05e-92a4-4fb1-819c-1acfdb6e2104_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5edafacd-9fc7-40ee-8b18-4b2d22665312" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5e46e05e-92a4-4fb1-819c-1acfdb6e2104" xlink:to="loc_dei_EntityDomain_5edafacd-9fc7-40ee-8b18-4b2d22665312" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_eb2829c3-6f05-4659-b2dc-203010b43a81" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5edafacd-9fc7-40ee-8b18-4b2d22665312" xlink:to="loc_din_ApplebeesMember_eb2829c3-6f05-4659-b2dc-203010b43a81" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FuzzysMember_e0f5fa49-8e89-45fb-8b7d-1b48041584ce" xlink:href="din-20221231.xsd#din_FuzzysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5edafacd-9fc7-40ee-8b18-4b2d22665312" xlink:to="loc_din_FuzzysMember_e0f5fa49-8e89-45fb-8b7d-1b48041584ce" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/GoodwillChangesInCarryingAmountofGoodwillDetails" xlink:type="simple" xlink:href="din-20221231.xsd#GoodwillChangesInCarryingAmountofGoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/GoodwillChangesInCarryingAmountofGoodwillDetails" xlink:type="extended" id="iaf56d2aa32834bec978ed0316ac87246_GoodwillChangesInCarryingAmountofGoodwillDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_bf9c81f2-e59c-4918-a2e2-87f0bfdbfcc8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_8f165d0c-c63d-4019-8597-a12c4a29b84d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_bf9c81f2-e59c-4918-a2e2-87f0bfdbfcc8" xlink:to="loc_us-gaap_GoodwillRollForward_8f165d0c-c63d-4019-8597-a12c4a29b84d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_aa446754-05a5-41d5-a7a9-40f18f6e516e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_8f165d0c-c63d-4019-8597-a12c4a29b84d" xlink:to="loc_us-gaap_Goodwill_aa446754-05a5-41d5-a7a9-40f18f6e516e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_67aca2c5-5811-41b2-89c8-027fc1248af9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_8f165d0c-c63d-4019-8597-a12c4a29b84d" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_67aca2c5-5811-41b2-89c8-027fc1248af9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_26715f01-07bd-45dd-931c-b4a2fb0981ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_8f165d0c-c63d-4019-8597-a12c4a29b84d" xlink:to="loc_us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_26715f01-07bd-45dd-931c-b4a2fb0981ce" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_4565fa23-4328-49c0-b7c1-1ffc30e7b404" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_8f165d0c-c63d-4019-8597-a12c4a29b84d" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_4565fa23-4328-49c0-b7c1-1ffc30e7b404" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_27818c0c-95be-4621-bdcb-0ba9c2c57e63" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_acf46a81-113c-48f7-8d49-eae7c8239471" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_bf9c81f2-e59c-4918-a2e2-87f0bfdbfcc8" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_acf46a81-113c-48f7-8d49-eae7c8239471" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f1a60913-28a6-4aab-b440-e2e11385fb1c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_acf46a81-113c-48f7-8d49-eae7c8239471" xlink:to="loc_dei_LegalEntityAxis_f1a60913-28a6-4aab-b440-e2e11385fb1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f1a60913-28a6-4aab-b440-e2e11385fb1c_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f1a60913-28a6-4aab-b440-e2e11385fb1c" xlink:to="loc_dei_EntityDomain_f1a60913-28a6-4aab-b440-e2e11385fb1c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_feb2e7af-518f-4229-ba61-2e36e7fa186e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f1a60913-28a6-4aab-b440-e2e11385fb1c" xlink:to="loc_dei_EntityDomain_feb2e7af-518f-4229-ba61-2e36e7fa186e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_79203240-e623-44a0-b7e8-0028f103acef" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_feb2e7af-518f-4229-ba61-2e36e7fa186e" xlink:to="loc_din_ApplebeesMember_79203240-e623-44a0-b7e8-0028f103acef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_IhopMember_d6a115e9-3bca-4da6-a411-8a09c85676c0" xlink:href="din-20221231.xsd#din_IhopMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_feb2e7af-518f-4229-ba61-2e36e7fa186e" xlink:to="loc_din_IhopMember_d6a115e9-3bca-4da6-a411-8a09c85676c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FuzzysMember_c2c2495c-4754-4c52-a794-ebbf6d408abb" xlink:href="din-20221231.xsd#din_FuzzysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_feb2e7af-518f-4229-ba61-2e36e7fa186e" xlink:to="loc_din_FuzzysMember_c2c2495c-4754-4c52-a794-ebbf6d408abb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureAxis_eff69380-49df-45ce-abc9-9d1e474ce58a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_acf46a81-113c-48f7-8d49-eae7c8239471" xlink:to="loc_us-gaap_FranchisorDisclosureAxis_eff69380-49df-45ce-abc9-9d1e474ce58a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_eff69380-49df-45ce-abc9-9d1e474ce58a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_eff69380-49df-45ce-abc9-9d1e474ce58a" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_eff69380-49df-45ce-abc9-9d1e474ce58a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_ba86caf8-2a55-4e0a-ab67-a9aa3a78c2e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_eff69380-49df-45ce-abc9-9d1e474ce58a" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_ba86caf8-2a55-4e0a-ab67-a9aa3a78c2e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisedUnitsMember_591c1b52-e15c-43db-b454-7c2c23d604d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_ba86caf8-2a55-4e0a-ab67-a9aa3a78c2e2" xlink:to="loc_us-gaap_FranchisedUnitsMember_591c1b52-e15c-43db-b454-7c2c23d604d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityOperatedUnitsMember_0b049b60-2d32-4e22-9383-4543cf28e1e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityOperatedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_ba86caf8-2a55-4e0a-ab67-a9aa3a78c2e2" xlink:to="loc_us-gaap_EntityOperatedUnitsMember_0b049b60-2d32-4e22-9383-4543cf28e1e3" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/GoodwillGrossandnetcarryingamountsofgoodwillDetails" xlink:type="simple" xlink:href="din-20221231.xsd#GoodwillGrossandnetcarryingamountsofgoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/GoodwillGrossandnetcarryingamountsofgoodwillDetails" xlink:type="extended" id="i3a79acd3918e4aeea284ff668f33494c_GoodwillGrossandnetcarryingamountsofgoodwillDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_ee4c86e9-3b2c-4549-87ee-582fef98fa6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillGross_120d515f-4b81-4bf4-b180-7291a01d4570" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_ee4c86e9-3b2c-4549-87ee-582fef98fa6e" xlink:to="loc_us-gaap_GoodwillGross_120d515f-4b81-4bf4-b180-7291a01d4570" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_cf36f42e-b342-42ef-88e5-722323742286" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_ee4c86e9-3b2c-4549-87ee-582fef98fa6e" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_cf36f42e-b342-42ef-88e5-722323742286" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_d968b591-fe5b-4aa6-9ffd-31ad29f1025f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_ee4c86e9-3b2c-4549-87ee-582fef98fa6e" xlink:to="loc_us-gaap_Goodwill_d968b591-fe5b-4aa6-9ffd-31ad29f1025f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_c450d9e6-ad07-43fc-baf4-126164dd6adf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_ee4c86e9-3b2c-4549-87ee-582fef98fa6e" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_c450d9e6-ad07-43fc-baf4-126164dd6adf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureAxis_e93d5d2e-915e-4175-b55b-e3d7231bce5a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_c450d9e6-ad07-43fc-baf4-126164dd6adf" xlink:to="loc_us-gaap_FranchisorDisclosureAxis_e93d5d2e-915e-4175-b55b-e3d7231bce5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_e93d5d2e-915e-4175-b55b-e3d7231bce5a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_e93d5d2e-915e-4175-b55b-e3d7231bce5a" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_e93d5d2e-915e-4175-b55b-e3d7231bce5a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_01219209-087f-4db2-aa85-018254c3a727" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_e93d5d2e-915e-4175-b55b-e3d7231bce5a" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_01219209-087f-4db2-aa85-018254c3a727" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisedUnitsMember_555349e6-268f-4d2c-b6e6-7ba3eab6ebd5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_01219209-087f-4db2-aa85-018254c3a727" xlink:to="loc_us-gaap_FranchisedUnitsMember_555349e6-268f-4d2c-b6e6-7ba3eab6ebd5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityOperatedUnitsMember_5d3f91b1-b3b6-4a03-8fea-8008cc8d70ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityOperatedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_01219209-087f-4db2-aa85-018254c3a727" xlink:to="loc_us-gaap_EntityOperatedUnitsMember_5d3f91b1-b3b6-4a03-8fea-8008cc8d70ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f53416d8-2ecd-46dd-8870-58ac0b748456" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_c450d9e6-ad07-43fc-baf4-126164dd6adf" xlink:to="loc_dei_LegalEntityAxis_f53416d8-2ecd-46dd-8870-58ac0b748456" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f53416d8-2ecd-46dd-8870-58ac0b748456_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f53416d8-2ecd-46dd-8870-58ac0b748456" xlink:to="loc_dei_EntityDomain_f53416d8-2ecd-46dd-8870-58ac0b748456_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0812b47d-1e6f-47cf-8ab7-5482626bc320" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f53416d8-2ecd-46dd-8870-58ac0b748456" xlink:to="loc_dei_EntityDomain_0812b47d-1e6f-47cf-8ab7-5482626bc320" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_f00bccfd-70ec-4f62-905b-5a9ed4df32c8" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0812b47d-1e6f-47cf-8ab7-5482626bc320" xlink:to="loc_din_ApplebeesMember_f00bccfd-70ec-4f62-905b-5a9ed4df32c8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_IhopMember_85a2bcad-90d8-432f-8a52-d71683b644e4" xlink:href="din-20221231.xsd#din_IhopMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0812b47d-1e6f-47cf-8ab7-5482626bc320" xlink:to="loc_din_IhopMember_85a2bcad-90d8-432f-8a52-d71683b644e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FuzzysMember_44aea4a4-7743-47a6-9f33-43d960faf59c" xlink:href="din-20221231.xsd#din_FuzzysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0812b47d-1e6f-47cf-8ab7-5482626bc320" xlink:to="loc_din_FuzzysMember_44aea4a4-7743-47a6-9f33-43d960faf59c" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/OtherIntangibleAssetsOtherIntangibleAssetsRollForwardDetails" xlink:type="simple" xlink:href="din-20221231.xsd#OtherIntangibleAssetsOtherIntangibleAssetsRollForwardDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/OtherIntangibleAssetsOtherIntangibleAssetsRollForwardDetails" xlink:type="extended" id="i10d7697a80cc454fb50c92ab8f0fcc47_OtherIntangibleAssetsOtherIntangibleAssetsRollForwardDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_330c9e6b-647c-40ba-9fec-822888aee5c7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_86a941ce-a93a-465f-b5c5-4d8dd7aa0548" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_330c9e6b-647c-40ba-9fec-822888aee5c7" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_86a941ce-a93a-465f-b5c5-4d8dd7aa0548" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetFiniteLivedStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_2674c9bb-269b-4886-a360-2ba2116dec73" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfIntangibleAssetFiniteLivedStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_330c9e6b-647c-40ba-9fec-822888aee5c7" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetFiniteLivedStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_2674c9bb-269b-4886-a360-2ba2116dec73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_63b81bda-5085-484b-9e6e-fe18bb810cff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_330c9e6b-647c-40ba-9fec-822888aee5c7" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_63b81bda-5085-484b-9e6e-fe18bb810cff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefinitelivedIntangibleAssetsAcquired_53f4f4e9-409e-4894-8f6e-286aa081f78f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefinitelivedIntangibleAssetsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_330c9e6b-647c-40ba-9fec-822888aee5c7" xlink:to="loc_us-gaap_IndefinitelivedIntangibleAssetsAcquired_53f4f4e9-409e-4894-8f6e-286aa081f78f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit_6ad3be7d-7265-4d05-b1df-e40af5a5d712" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_330c9e6b-647c-40ba-9fec-822888aee5c7" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit_6ad3be7d-7265-4d05-b1df-e40af5a5d712" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_eb6b9c71-b0eb-4ea5-8270-0a714309de1f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_2ca15b62-217a-4189-a4a7-49c42801549c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_330c9e6b-647c-40ba-9fec-822888aee5c7" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_2ca15b62-217a-4189-a4a7-49c42801549c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_bebd6fb4-237f-45d2-a6dc-b17e54bbedf4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_2ca15b62-217a-4189-a4a7-49c42801549c" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_bebd6fb4-237f-45d2-a6dc-b17e54bbedf4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_bebd6fb4-237f-45d2-a6dc-b17e54bbedf4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_bebd6fb4-237f-45d2-a6dc-b17e54bbedf4" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_bebd6fb4-237f-45d2-a6dc-b17e54bbedf4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_cb8ef0f1-3215-43d5-95b0-2ff9769a1804" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_bebd6fb4-237f-45d2-a6dc-b17e54bbedf4" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_cb8ef0f1-3215-43d5-95b0-2ff9769a1804" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_6cf2e4e9-a4d9-4c72-9829-1c9bcd2ccfdc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_cb8ef0f1-3215-43d5-95b0-2ff9769a1804" xlink:to="loc_us-gaap_TradeNamesMember_6cf2e4e9-a4d9-4c72-9829-1c9bcd2ccfdc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_5a218b74-1d40-4ade-b753-cc15fb88ad68" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_cb8ef0f1-3215-43d5-95b0-2ff9769a1804" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_5a218b74-1d40-4ade-b753-cc15fb88ad68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_3fd2d6a9-3c6d-41e4-9e96-c1dc28d2e309" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_998951d7-94ec-404d-b344-585a96606f74" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_3fd2d6a9-3c6d-41e4-9e96-c1dc28d2e309" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_998951d7-94ec-404d-b344-585a96606f74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_2c7445d3-5a02-4787-b08a-f42618fc3202" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_998951d7-94ec-404d-b344-585a96606f74" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_2c7445d3-5a02-4787-b08a-f42618fc3202" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_2e9a67f3-4209-4408-b0dd-f575c71790fc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_998951d7-94ec-404d-b344-585a96606f74" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_2e9a67f3-4209-4408-b0dd-f575c71790fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_129d71c7-a471-4b2a-807a-35dda83abc59" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_998951d7-94ec-404d-b344-585a96606f74" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_129d71c7-a471-4b2a-807a-35dda83abc59" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_14e254d2-04a1-45b8-b6ad-65754fb55d07" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_998951d7-94ec-404d-b344-585a96606f74" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_14e254d2-04a1-45b8-b6ad-65754fb55d07" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FinitedLivedIntangibleAssetsWriteOffRelatedToSaleOfBusinessUnit_9213a87d-ffdb-40b0-9b7f-31eeb635ad3a" xlink:href="din-20221231.xsd#din_FinitedLivedIntangibleAssetsWriteOffRelatedToSaleOfBusinessUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_998951d7-94ec-404d-b344-585a96606f74" xlink:to="loc_din_FinitedLivedIntangibleAssetsWriteOffRelatedToSaleOfBusinessUnit_9213a87d-ffdb-40b0-9b7f-31eeb635ad3a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_71a7419c-7c45-412e-8389-e861078eb813" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_29d7ce6d-5d2f-4b0b-8852-729e1fe2584e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_3fd2d6a9-3c6d-41e4-9e96-c1dc28d2e309" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_29d7ce6d-5d2f-4b0b-8852-729e1fe2584e" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_20c828ea-6450-4d48-b54a-6bb0811fdc7e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_29d7ce6d-5d2f-4b0b-8852-729e1fe2584e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_20c828ea-6450-4d48-b54a-6bb0811fdc7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_20c828ea-6450-4d48-b54a-6bb0811fdc7e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_20c828ea-6450-4d48-b54a-6bb0811fdc7e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_20c828ea-6450-4d48-b54a-6bb0811fdc7e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e7cca5fa-68e0-4136-b739-8d5d7c60a289" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_20c828ea-6450-4d48-b54a-6bb0811fdc7e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e7cca5fa-68e0-4136-b739-8d5d7c60a289" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchiseRightsMember_dbbb1c8b-14ee-47ef-92eb-2971345e0e50" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchiseRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e7cca5fa-68e0-4136-b739-8d5d7c60a289" xlink:to="loc_us-gaap_FranchiseRightsMember_dbbb1c8b-14ee-47ef-92eb-2971345e0e50" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ReacquiredFranchiseRightsMember_27d30d65-b051-485d-81df-559fb78420db" xlink:href="din-20221231.xsd#din_ReacquiredFranchiseRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e7cca5fa-68e0-4136-b739-8d5d7c60a289" xlink:to="loc_din_ReacquiredFranchiseRightsMember_27d30d65-b051-485d-81df-559fb78420db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_cd802843-cb36-45ad-b564-8cbed17f17e1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e7cca5fa-68e0-4136-b739-8d5d7c60a289" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_cd802843-cb36-45ad-b564-8cbed17f17e1" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/OtherIntangibleAssetsNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#OtherIntangibleAssetsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/OtherIntangibleAssetsNarrativeDetails" xlink:type="extended" id="id3806509b4194ffbb5b82f737a9b725d_OtherIntangibleAssetsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefinitelivedIntangibleAssetsAcquired_d01ac970-8aab-4452-87ad-3b6836e563b2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefinitelivedIntangibleAssetsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_IndefinitelivedIntangibleAssetsAcquired_d01ac970-8aab-4452-87ad-3b6836e563b2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_711fd2e4-b259-4c22-ac1b-dcf0a93233fa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_711fd2e4-b259-4c22-ac1b-dcf0a93233fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_4dac053e-addb-4525-8a29-7f7150646d68" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_4dac053e-addb-4525-8a29-7f7150646d68" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfRestaurantsRefranchisedAndSold_f72398da-12f0-4e9b-aaf0-398fe1ce8c68" xlink:href="din-20221231.xsd#din_NumberOfRestaurantsRefranchisedAndSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_din_NumberOfRestaurantsRefranchisedAndSold_f72398da-12f0-4e9b-aaf0-398fe1ce8c68" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetIndefiniteLivedExcludingGoodwillStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_5f345931-0fec-4348-8aab-2701e179fba3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfIntangibleAssetIndefiniteLivedExcludingGoodwillStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetIndefiniteLivedExcludingGoodwillStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_5f345931-0fec-4348-8aab-2701e179fba3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_24ed1e64-64f3-42e9-9a76-ed9d175637f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_24ed1e64-64f3-42e9-9a76-ed9d175637f0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_f6659fa7-d1be-4503-b8f9-039f9ef6416e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_f6659fa7-d1be-4503-b8f9-039f9ef6416e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_f8cf8649-57ca-47f7-9068-6783ba3590d8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_f8cf8649-57ca-47f7-9068-6783ba3590d8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_7c0f9e67-187c-4f9d-9cba-40740a6400a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_7c0f9e67-187c-4f9d-9cba-40740a6400a1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_69b9dac0-a23f-4dcc-8302-0d31fa6dc2f4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_69b9dac0-a23f-4dcc-8302-0d31fa6dc2f4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_22ee9510-0caf-4985-9572-3ff9013d723e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_22ee9510-0caf-4985-9572-3ff9013d723e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_96e17262-69f3-4dd7-a3c4-49d0bddee1d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_96e17262-69f3-4dd7-a3c4-49d0bddee1d2" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_535430dd-efde-46dc-94fd-c354cafc036c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ac2c8940-a833-4830-9d47-b1cba6b26f00" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_535430dd-efde-46dc-94fd-c354cafc036c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_aa3bd3f9-73a3-4d19-a5d6-3c7317b57bf4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_535430dd-efde-46dc-94fd-c354cafc036c" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_aa3bd3f9-73a3-4d19-a5d6-3c7317b57bf4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_aa3bd3f9-73a3-4d19-a5d6-3c7317b57bf4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_aa3bd3f9-73a3-4d19-a5d6-3c7317b57bf4" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_aa3bd3f9-73a3-4d19-a5d6-3c7317b57bf4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0abec971-5dea-4bcb-971a-5d50cbdb1b36" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_aa3bd3f9-73a3-4d19-a5d6-3c7317b57bf4" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0abec971-5dea-4bcb-971a-5d50cbdb1b36" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_dec18564-d627-41b0-80ab-c957281df9ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0abec971-5dea-4bcb-971a-5d50cbdb1b36" xlink:to="loc_us-gaap_TradeNamesMember_dec18564-d627-41b0-80ab-c957281df9ae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9d8cd432-925a-4c1c-baa6-8537d95c78e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_535430dd-efde-46dc-94fd-c354cafc036c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9d8cd432-925a-4c1c-baa6-8537d95c78e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9d8cd432-925a-4c1c-baa6-8537d95c78e6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9d8cd432-925a-4c1c-baa6-8537d95c78e6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9d8cd432-925a-4c1c-baa6-8537d95c78e6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5e109a80-e5b2-4000-8d77-fcfa79ede681" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9d8cd432-925a-4c1c-baa6-8537d95c78e6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5e109a80-e5b2-4000-8d77-fcfa79ede681" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchiseRightsMember_abd20ed8-d6d3-483c-8616-74b28d371614" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchiseRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5e109a80-e5b2-4000-8d77-fcfa79ede681" xlink:to="loc_us-gaap_FranchiseRightsMember_abd20ed8-d6d3-483c-8616-74b28d371614" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RecipesMember_7de65c5d-9c26-4de4-801a-2caa38ba08a1" xlink:href="din-20221231.xsd#din_RecipesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5e109a80-e5b2-4000-8d77-fcfa79ede681" xlink:to="loc_din_RecipesMember_7de65c5d-9c26-4de4-801a-2caa38ba08a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ReacquiredFranchiseRightsMember_72abbe84-2a3c-4fd3-9504-8ebd41726107" xlink:href="din-20221231.xsd#din_ReacquiredFranchiseRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5e109a80-e5b2-4000-8d77-fcfa79ede681" xlink:to="loc_din_ReacquiredFranchiseRightsMember_72abbe84-2a3c-4fd3-9504-8ebd41726107" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_977b0a3d-270e-4a67-ba5f-89da0bfdc64e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5e109a80-e5b2-4000-8d77-fcfa79ede681" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_977b0a3d-270e-4a67-ba5f-89da0bfdc64e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureAxis_cc93b5c9-a964-4e01-b92d-0729e098ab53" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_535430dd-efde-46dc-94fd-c354cafc036c" xlink:to="loc_us-gaap_FranchisorDisclosureAxis_cc93b5c9-a964-4e01-b92d-0729e098ab53" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_cc93b5c9-a964-4e01-b92d-0729e098ab53_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_cc93b5c9-a964-4e01-b92d-0729e098ab53" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_cc93b5c9-a964-4e01-b92d-0729e098ab53_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_4d0a7b4c-1e9d-447c-8f99-c77a9ea50809" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_cc93b5c9-a964-4e01-b92d-0729e098ab53" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_4d0a7b4c-1e9d-447c-8f99-c77a9ea50809" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityOperatedUnitsMember_dc85f69a-986e-426b-97f7-2d272d512f48" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityOperatedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_4d0a7b4c-1e9d-447c-8f99-c77a9ea50809" xlink:to="loc_us-gaap_EntityOperatedUnitsMember_dc85f69a-986e-426b-97f7-2d272d512f48" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_110e9e94-b6af-46dc-8846-8992e6793ae1" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_535430dd-efde-46dc-94fd-c354cafc036c" xlink:to="loc_dei_LegalEntityAxis_110e9e94-b6af-46dc-8846-8992e6793ae1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_110e9e94-b6af-46dc-8846-8992e6793ae1_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_110e9e94-b6af-46dc-8846-8992e6793ae1" xlink:to="loc_dei_EntityDomain_110e9e94-b6af-46dc-8846-8992e6793ae1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ae48e3cd-4903-4cb2-9bb5-68925523cb5a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_110e9e94-b6af-46dc-8846-8992e6793ae1" xlink:to="loc_dei_EntityDomain_ae48e3cd-4903-4cb2-9bb5-68925523cb5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_4d949b11-b8d9-46d7-80de-7ea0a5f2ba96" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ae48e3cd-4903-4cb2-9bb5-68925523cb5a" xlink:to="loc_din_ApplebeesMember_4d949b11-b8d9-46d7-80de-7ea0a5f2ba96" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/OtherIntangibleAssetsScheduleofIntangibleAssetsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#OtherIntangibleAssetsScheduleofIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/OtherIntangibleAssetsScheduleofIntangibleAssetsDetails" xlink:type="extended" id="i2399ec1f07ff4027b57d1aa33b922c5d_OtherIntangibleAssetsScheduleofIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2b820278-7e7c-412c-8a92-68452680fac6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_c9e61a96-1a5a-4b22-95a6-dae43d19562f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2b820278-7e7c-412c-8a92-68452680fac6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_c9e61a96-1a5a-4b22-95a6-dae43d19562f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_9342b82b-94d5-4dd6-971c-bd160271c1b2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2b820278-7e7c-412c-8a92-68452680fac6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_9342b82b-94d5-4dd6-971c-bd160271c1b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e002ea0a-b458-417e-9d5f-b94cd6066079" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2b820278-7e7c-412c-8a92-68452680fac6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e002ea0a-b458-417e-9d5f-b94cd6066079" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_7a4f4e93-d050-415f-b669-b8a5ed8a0adc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2b820278-7e7c-412c-8a92-68452680fac6" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_7a4f4e93-d050-415f-b669-b8a5ed8a0adc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_8f48586f-dd95-428c-9585-f4f0b32586e8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_7a4f4e93-d050-415f-b669-b8a5ed8a0adc" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_8f48586f-dd95-428c-9585-f4f0b32586e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8f48586f-dd95-428c-9585-f4f0b32586e8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_8f48586f-dd95-428c-9585-f4f0b32586e8" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8f48586f-dd95-428c-9585-f4f0b32586e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0204a281-f937-4685-85df-468f652cc5d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_8f48586f-dd95-428c-9585-f4f0b32586e8" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0204a281-f937-4685-85df-468f652cc5d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchiseRightsMember_6674418c-c6e3-4f96-b0aa-9c502bc50774" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchiseRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0204a281-f937-4685-85df-468f652cc5d1" xlink:to="loc_us-gaap_FranchiseRightsMember_6674418c-c6e3-4f96-b0aa-9c502bc50774" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ReacquiredFranchiseRightsMember_91c9fbde-b439-414b-a58b-82ffd28c147c" xlink:href="din-20221231.xsd#din_ReacquiredFranchiseRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0204a281-f937-4685-85df-468f652cc5d1" xlink:to="loc_din_ReacquiredFranchiseRightsMember_91c9fbde-b439-414b-a58b-82ffd28c147c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_8fc2d0af-f613-4237-8cc9-ff3c0e99f3f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0204a281-f937-4685-85df-468f652cc5d1" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_8fc2d0af-f613-4237-8cc9-ff3c0e99f3f0" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/LongTermDebtScheduleofDebtComponentsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#LongTermDebtScheduleofDebtComponentsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/LongTermDebtScheduleofDebtComponentsDetails" xlink:type="extended" id="ie9eebc04d9ab4c619ed377c9fc7365a7_LongTermDebtScheduleofDebtComponentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_ab0b1217-2d2e-40f3-bd0c-07976142384a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotes_c6d1de76-b5de-451b-b723-a19283e3d977" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SeniorNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab0b1217-2d2e-40f3-bd0c-07976142384a" xlink:to="loc_us-gaap_SeniorNotes_c6d1de76-b5de-451b-b723-a19283e3d977" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_a8be1807-5718-462a-8a0f-2c09543d9503" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab0b1217-2d2e-40f3-bd0c-07976142384a" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_a8be1807-5718-462a-8a0f-2c09543d9503" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_f127b905-08c1-4e56-856b-78beb9414469" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab0b1217-2d2e-40f3-bd0c-07976142384a" xlink:to="loc_us-gaap_LongTermDebt_f127b905-08c1-4e56-856b-78beb9414469" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_ae731222-96c1-4a71-8230-141d37b2d25a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab0b1217-2d2e-40f3-bd0c-07976142384a" xlink:to="loc_us-gaap_LongTermDebtCurrent_ae731222-96c1-4a71-8230-141d37b2d25a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_57a7bd40-7dd7-4934-ac59-28e3eb67cbbd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab0b1217-2d2e-40f3-bd0c-07976142384a" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_57a7bd40-7dd7-4934-ac59-28e3eb67cbbd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_cf5b1e10-84fc-418c-8637-498410482818" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab0b1217-2d2e-40f3-bd0c-07976142384a" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_cf5b1e10-84fc-418c-8637-498410482818" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_451c9efd-cc13-4bfe-895f-90f0870e5cb4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab0b1217-2d2e-40f3-bd0c-07976142384a" xlink:to="loc_us-gaap_DebtInstrumentTable_451c9efd-cc13-4bfe-895f-90f0870e5cb4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_e1d3eca2-a7df-4b21-9137-ae672214302b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_451c9efd-cc13-4bfe-895f-90f0870e5cb4" xlink:to="loc_us-gaap_DebtInstrumentAxis_e1d3eca2-a7df-4b21-9137-ae672214302b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e1d3eca2-a7df-4b21-9137-ae672214302b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_e1d3eca2-a7df-4b21-9137-ae672214302b" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e1d3eca2-a7df-4b21-9137-ae672214302b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d34574dc-9e9b-41b6-94fa-4e0357c57200" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_e1d3eca2-a7df-4b21-9137-ae672214302b" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d34574dc-9e9b-41b6-94fa-4e0357c57200" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series201914.194FixedRateSeniorSecuredNotesClassA2IMember_230e57f6-e53c-4a12-af25-1a25667d31c3" xlink:href="din-20221231.xsd#din_Series201914.194FixedRateSeniorSecuredNotesClassA2IMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d34574dc-9e9b-41b6-94fa-4e0357c57200" xlink:to="loc_din_Series201914.194FixedRateSeniorSecuredNotesClassA2IMember_230e57f6-e53c-4a12-af25-1a25667d31c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember_de523070-1b3d-46da-b6b2-1494dcf43224" xlink:href="din-20221231.xsd#din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d34574dc-9e9b-41b6-94fa-4e0357c57200" xlink:to="loc_din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember_de523070-1b3d-46da-b6b2-1494dcf43224" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series20221VariableFundingSeniorNotesClassA1Member_3d0f35cc-b400-4975-9a6f-a4ce745dc0e5" xlink:href="din-20221231.xsd#din_Series20221VariableFundingSeniorNotesClassA1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d34574dc-9e9b-41b6-94fa-4e0357c57200" xlink:to="loc_din_Series20221VariableFundingSeniorNotesClassA1Member_3d0f35cc-b400-4975-9a6f-a4ce745dc0e5" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/LongTermDebtNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#LongTermDebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/LongTermDebtNarrativeDetails" xlink:type="extended" id="i0e7cc028679f43b383d7a482592877f2_LongTermDebtNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentNumberOfTranchesIssued_9571dec2-826b-48a4-9f6e-7d812ca0a32b" xlink:href="din-20221231.xsd#din_DebtInstrumentNumberOfTranchesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtInstrumentNumberOfTranchesIssued_9571dec2-826b-48a4-9f6e-7d812ca0a32b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_eca2daf6-a2f5-4491-9dd1-1a9c2e9abef0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_eca2daf6-a2f5-4491-9dd1-1a9c2e9abef0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_9f60aea9-5d8d-41ed-b6a6-8113f38ab473" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_9f60aea9-5d8d-41ed-b6a6-8113f38ab473" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_0d256a32-14c8-4604-9c42-917df34f4e95" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_0d256a32-14c8-4604-9c42-917df34f4e95" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LineOfCreditFacilityExpiredAmount_8d5aa683-d947-418d-8566-08a6cc84bb81" xlink:href="din-20221231.xsd#din_LineOfCreditFacilityExpiredAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_LineOfCreditFacilityExpiredAmount_8d5aa683-d947-418d-8566-08a6cc84bb81" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentAdditionalInterestOnFixedRate_c42dfd32-4857-4daf-9b07-8832349d55f9" xlink:href="din-20221231.xsd#din_DebtInstrumentAdditionalInterestOnFixedRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtInstrumentAdditionalInterestOnFixedRate_c42dfd32-4857-4daf-9b07-8832349d55f9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_c2d2c390-04b0-4ea9-bede-a5b360d65897" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DebtInstrumentTerm_c2d2c390-04b0-4ea9-bede-a5b360d65897" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_0a48e6b9-0787-4610-81d4-890fd86116e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_0a48e6b9-0787-4610-81d4-890fd86116e3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentCovenantComplianceRatioOfIndebtednessToNetCapitalMaximum_17ba8c04-1de2-4f55-b306-e2ae691ec983" xlink:href="din-20221231.xsd#din_DebtInstrumentCovenantComplianceRatioOfIndebtednessToNetCapitalMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtInstrumentCovenantComplianceRatioOfIndebtednessToNetCapitalMaximum_17ba8c04-1de2-4f55-b306-e2ae691ec983" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RatioOfIndebtednessToNetCapital1_deedb8e1-56a4-4438-abc9-260d69c774de" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RatioOfIndebtednessToNetCapital1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_RatioOfIndebtednessToNetCapital1_deedb8e1-56a4-4438-abc9-260d69c774de" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_824cac29-1417-4680-91e6-9bf8f2c66d1a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_824cac29-1417-4680-91e6-9bf8f2c66d1a" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RepaymentsOfDebtPrinciple_3ee15ee4-f6f5-4e18-b48b-57e8385f747f" xlink:href="din-20221231.xsd#din_RepaymentsOfDebtPrinciple"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_RepaymentsOfDebtPrinciple_3ee15ee4-f6f5-4e18-b48b-57e8385f747f" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentMakeWholePremium_76d55952-a252-48fa-a7bb-d3b9ceadf9f5" xlink:href="din-20221231.xsd#din_DebtInstrumentMakeWholePremium"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtInstrumentMakeWholePremium_76d55952-a252-48fa-a7bb-d3b9ceadf9f5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_a9656620-e7cd-4960-a805-3c1a56002380" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromLongTermLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_a9656620-e7cd-4960-a805-3c1a56002380" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_d1bb2bfa-dbc0-44f7-a980-f39bdd57dc7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RepaymentsOfLongTermLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_d1bb2bfa-dbc0-44f7-a980-f39bdd57dc7b" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_adb61d62-ccf9-4181-babe-96967fcf89bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_LineOfCredit_adb61d62-ccf9-4181-babe-96967fcf89bf" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LineOfCreditFacilityPercentageOfAdvancesDrawn_62fbf7b7-43b0-4be1-a80c-0972bcce4d5a" xlink:href="din-20221231.xsd#din_LineOfCreditFacilityPercentageOfAdvancesDrawn"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_LineOfCreditFacilityPercentageOfAdvancesDrawn_62fbf7b7-43b0-4be1-a80c-0972bcce4d5a" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_a34904dd-f425-4719-8924-6c949b11fe57" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_a34904dd-f425-4719-8924-6c949b11fe57" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentNumberOfRenewalPeriods_eb9faa15-cd40-45cd-9e2b-9bf324ba8321" xlink:href="din-20221231.xsd#din_DebtInstrumentNumberOfRenewalPeriods"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtInstrumentNumberOfRenewalPeriods_eb9faa15-cd40-45cd-9e2b-9bf324ba8321" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentRenewalPeriod_47d5f95d-606e-43a5-97b8-6de7f9843193" xlink:href="din-20221231.xsd#din_DebtInstrumentRenewalPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtInstrumentRenewalPeriod_47d5f95d-606e-43a5-97b8-6de7f9843193" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentInterestRatePercentageAfterRenewalDate_9387a26c-7f93-4fbc-860c-466b8500eaed" xlink:href="din-20221231.xsd#din_DebtInstrumentInterestRatePercentageAfterRenewalDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtInstrumentInterestRatePercentageAfterRenewalDate_9387a26c-7f93-4fbc-860c-466b8500eaed" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_d8446502-68d8-45a1-8f60-236e357a89ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_d8446502-68d8-45a1-8f60-236e357a89ae" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_76bb9726-c02e-4c8a-904d-29491f7f5aaf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_76bb9726-c02e-4c8a-904d-29491f7f5aaf" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentCovenantCashSweepingEventRestrictedCashThresholdPercentage_43b3424e-b11e-4f67-b677-c695f1598109" xlink:href="din-20221231.xsd#din_DebtInstrumentCovenantCashSweepingEventRestrictedCashThresholdPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtInstrumentCovenantCashSweepingEventRestrictedCashThresholdPercentage_43b3424e-b11e-4f67-b677-c695f1598109" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtServiceCoverageRatioCashSweepingEvent_7b90366e-1632-4836-8dce-77311edf4b6f" xlink:href="din-20221231.xsd#din_DebtServiceCoverageRatioCashSweepingEvent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtServiceCoverageRatioCashSweepingEvent_7b90366e-1632-4836-8dce-77311edf4b6f" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtServiceCoverageRatioRapidAmortizationEvent_2594fa30-e0a9-4121-a89f-0f68274cdfef" xlink:href="din-20221231.xsd#din_DebtServiceCoverageRatioRapidAmortizationEvent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtServiceCoverageRatioRapidAmortizationEvent_2594fa30-e0a9-4121-a89f-0f68274cdfef" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_InterestOnlyDebtServiceCoverageRatioManagerTerminationEvent_dbefd511-35bb-4322-8616-a49ba419585d" xlink:href="din-20221231.xsd#din_InterestOnlyDebtServiceCoverageRatioManagerTerminationEvent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_InterestOnlyDebtServiceCoverageRatioManagerTerminationEvent_dbefd511-35bb-4322-8616-a49ba419585d" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_InterestOnlyDebtServiceCoverageRatioDefaultEvent_30eb6e5b-5616-4f28-b6cb-17d712034258" xlink:href="din-20221231.xsd#din_InterestOnlyDebtServiceCoverageRatioDefaultEvent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_InterestOnlyDebtServiceCoverageRatioDefaultEvent_30eb6e5b-5616-4f28-b6cb-17d712034258" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtServiceCoverageRatio_de43ff02-b989-410b-b750-334b9b2d775b" xlink:href="din-20221231.xsd#din_DebtServiceCoverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_din_DebtServiceCoverageRatio_de43ff02-b989-410b-b750-334b9b2d775b" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_4dcc4454-dd2a-4973-972a-9fd85e914e71" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_4dcc4454-dd2a-4973-972a-9fd85e914e71" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_d05a2b07-0d93-4437-82cf-21f0b138e69c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_d05a2b07-0d93-4437-82cf-21f0b138e69c" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_1d7a1e74-d0e5-4c0b-b10d-a04bc1d87206" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DeferredFinanceCostsGross_1d7a1e74-d0e5-4c0b-b10d-a04bc1d87206" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_bcc1483e-eb6d-4590-829e-cc3cb02b35ad" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_bcc1483e-eb6d-4590-829e-cc3cb02b35ad" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_517822a6-00db-4c49-b116-e569438512c2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_517822a6-00db-4c49-b116-e569438512c2" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAnnualPrincipalPayment_02811177-3748-4b96-b2c2-95b74e81e575" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAnnualPrincipalPayment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DebtInstrumentAnnualPrincipalPayment_02811177-3748-4b96-b2c2-95b74e81e575" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_980e1f4f-566b-4133-bd98-7e04d7842588" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f4518b5f-d429-4ac3-afc7-71a103850be6" xlink:to="loc_us-gaap_DebtInstrumentTable_980e1f4f-566b-4133-bd98-7e04d7842588" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_9a5ff216-f460-40a3-926e-d05a6ffe77db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_980e1f4f-566b-4133-bd98-7e04d7842588" xlink:to="loc_us-gaap_DebtInstrumentAxis_9a5ff216-f460-40a3-926e-d05a6ffe77db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9a5ff216-f460-40a3-926e-d05a6ffe77db_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_9a5ff216-f460-40a3-926e-d05a6ffe77db" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9a5ff216-f460-40a3-926e-d05a6ffe77db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_70e1cc1c-154b-46a2-bb45-283fb3fd1aec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_9a5ff216-f460-40a3-926e-d05a6ffe77db" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_70e1cc1c-154b-46a2-bb45-283fb3fd1aec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series201914723FixedRateSeniorSecuredNotesClassA2IIAndSeries201914194FixedRateSeniorSecuredNotesClassA2IMember_6cf56868-3b5d-4f1f-82da-178744916de0" xlink:href="din-20221231.xsd#din_Series201914723FixedRateSeniorSecuredNotesClassA2IIAndSeries201914194FixedRateSeniorSecuredNotesClassA2IMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_70e1cc1c-154b-46a2-bb45-283fb3fd1aec" xlink:to="loc_din_Series201914723FixedRateSeniorSecuredNotesClassA2IIAndSeries201914194FixedRateSeniorSecuredNotesClassA2IMember_6cf56868-3b5d-4f1f-82da-178744916de0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series201914.194FixedRateSeniorSecuredNotesClassA2IMember_dc746ad2-8a65-4a71-b8c0-698df7d61e2b" xlink:href="din-20221231.xsd#din_Series201914.194FixedRateSeniorSecuredNotesClassA2IMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_70e1cc1c-154b-46a2-bb45-283fb3fd1aec" xlink:to="loc_din_Series201914.194FixedRateSeniorSecuredNotesClassA2IMember_dc746ad2-8a65-4a71-b8c0-698df7d61e2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember_1a159a53-24b7-49bd-817d-c84f4613c783" xlink:href="din-20221231.xsd#din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_70e1cc1c-154b-46a2-bb45-283fb3fd1aec" xlink:to="loc_din_Series201914.723FixedRateSeniorSecuredNotesClassA2IIMember_1a159a53-24b7-49bd-817d-c84f4613c783" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series20221VariableFundingSeniorNotesClassA1Member_90a0a9b8-f4b3-4662-8e07-4ac9976639df" xlink:href="din-20221231.xsd#din_Series20221VariableFundingSeniorNotesClassA1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_70e1cc1c-154b-46a2-bb45-283fb3fd1aec" xlink:to="loc_din_Series20221VariableFundingSeniorNotesClassA1Member_90a0a9b8-f4b3-4662-8e07-4ac9976639df" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series20191VariableFundingSeniorNotesClassA1Member_92c47c95-58fe-49ac-81e8-55bc71f4bf56" xlink:href="din-20221231.xsd#din_Series20191VariableFundingSeniorNotesClassA1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_70e1cc1c-154b-46a2-bb45-283fb3fd1aec" xlink:to="loc_din_Series20191VariableFundingSeniorNotesClassA1Member_92c47c95-58fe-49ac-81e8-55bc71f4bf56" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_A2019ClassA2IAnd2019ClassA2IINotesMember_96d7efa8-b206-4497-81fe-7900dc1add56" xlink:href="din-20221231.xsd#din_A2019ClassA2IAnd2019ClassA2IINotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_70e1cc1c-154b-46a2-bb45-283fb3fd1aec" xlink:to="loc_din_A2019ClassA2IAnd2019ClassA2IINotesMember_96d7efa8-b206-4497-81fe-7900dc1add56" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_949bef3b-6e8a-460e-9bed-9fff0d1084ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_980e1f4f-566b-4133-bd98-7e04d7842588" xlink:to="loc_us-gaap_CreditFacilityAxis_949bef3b-6e8a-460e-9bed-9fff0d1084ed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_949bef3b-6e8a-460e-9bed-9fff0d1084ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_949bef3b-6e8a-460e-9bed-9fff0d1084ed" xlink:to="loc_us-gaap_CreditFacilityDomain_949bef3b-6e8a-460e-9bed-9fff0d1084ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_6465914d-50d9-48e3-a02c-4f276e9c841a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_949bef3b-6e8a-460e-9bed-9fff0d1084ed" xlink:to="loc_us-gaap_CreditFacilityDomain_6465914d-50d9-48e3-a02c-4f276e9c841a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_a7eec52c-d58f-4cb6-b904-05a2557fe253" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6465914d-50d9-48e3-a02c-4f276e9c841a" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_a7eec52c-d58f-4cb6-b904-05a2557fe253" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_69489f19-a0d6-493f-afe8-3ee1e17b9cef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6465914d-50d9-48e3-a02c-4f276e9c841a" xlink:to="loc_us-gaap_LetterOfCreditMember_69489f19-a0d6-493f-afe8-3ee1e17b9cef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_34f6c44d-0b21-4462-8f29-16e8dde8c8a5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_980e1f4f-566b-4133-bd98-7e04d7842588" xlink:to="loc_us-gaap_VariableRateAxis_34f6c44d-0b21-4462-8f29-16e8dde8c8a5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_34f6c44d-0b21-4462-8f29-16e8dde8c8a5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_34f6c44d-0b21-4462-8f29-16e8dde8c8a5" xlink:to="loc_us-gaap_VariableRateDomain_34f6c44d-0b21-4462-8f29-16e8dde8c8a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_bb075851-6bc3-4794-bfdc-b82a42d6a6b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_34f6c44d-0b21-4462-8f29-16e8dde8c8a5" xlink:to="loc_us-gaap_VariableRateDomain_bb075851-6bc3-4794-bfdc-b82a42d6a6b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_TenYearUnitedStatesTreasuryBillRateMember_d27f2cac-eef0-4575-a09b-00793f5d4407" xlink:href="din-20221231.xsd#din_TenYearUnitedStatesTreasuryBillRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bb075851-6bc3-4794-bfdc-b82a42d6a6b7" xlink:to="loc_din_TenYearUnitedStatesTreasuryBillRateMember_d27f2cac-eef0-4575-a09b-00793f5d4407" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_c2c3c429-d20a-490f-b1d8-0196dde608c4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bb075851-6bc3-4794-bfdc-b82a42d6a6b7" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_c2c3c429-d20a-490f-b1d8-0196dde608c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_CommercialPaperFundingRateOfConduitInvestorMember_3cff572a-d749-461d-8979-07dfd9699abe" xlink:href="din-20221231.xsd#din_CommercialPaperFundingRateOfConduitInvestorMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bb075851-6bc3-4794-bfdc-b82a42d6a6b7" xlink:to="loc_din_CommercialPaperFundingRateOfConduitInvestorMember_3cff572a-d749-461d-8979-07dfd9699abe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_2fbe2215-beed-447d-b5f6-bb7bd91645fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bb075851-6bc3-4794-bfdc-b82a42d6a6b7" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_2fbe2215-beed-447d-b5f6-bb7bd91645fd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FederalFundsRateMember_fad32840-d859-4c2e-82c0-c0c4326c8c5c" xlink:href="din-20221231.xsd#din_FederalFundsRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bb075851-6bc3-4794-bfdc-b82a42d6a6b7" xlink:to="loc_din_FederalFundsRateMember_fad32840-d859-4c2e-82c0-c0c4326c8c5c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_97f9c711-12dc-4748-8ce3-8af11d0ee71b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bb075851-6bc3-4794-bfdc-b82a42d6a6b7" xlink:to="loc_us-gaap_BaseRateMember_97f9c711-12dc-4748-8ce3-8af11d0ee71b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_47589d9d-6a70-4c31-b085-ec0a081aaa57" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_980e1f4f-566b-4133-bd98-7e04d7842588" xlink:to="loc_srt_RangeAxis_47589d9d-6a70-4c31-b085-ec0a081aaa57" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_47589d9d-6a70-4c31-b085-ec0a081aaa57_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_47589d9d-6a70-4c31-b085-ec0a081aaa57" xlink:to="loc_srt_RangeMember_47589d9d-6a70-4c31-b085-ec0a081aaa57_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d206cbb4-360c-4c9c-9f7e-aa6e71f1d179" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_47589d9d-6a70-4c31-b085-ec0a081aaa57" xlink:to="loc_srt_RangeMember_d206cbb4-360c-4c9c-9f7e-aa6e71f1d179" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_f98b5089-ad01-4b1f-ba42-ab6e46f43ca9" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d206cbb4-360c-4c9c-9f7e-aa6e71f1d179" xlink:to="loc_srt_MaximumMember_f98b5089-ad01-4b1f-ba42-ab6e46f43ca9" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/FinancingObligationsNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#FinancingObligationsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/FinancingObligationsNarrativeDetails" xlink:type="extended" id="i7b4ea7ceac4645868d19719cfa86ffd3_FinancingObligationsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ParcelsOfRealPropertyUnderSaleLeasebackTransaction_663a9342-2ccc-4e3d-a5ce-a38d2717f36c" xlink:href="din-20221231.xsd#din_ParcelsOfRealPropertyUnderSaleLeasebackTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:to="loc_din_ParcelsOfRealPropertyUnderSaleLeasebackTransaction_663a9342-2ccc-4e3d-a5ce-a38d2717f36c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionHistoricalCost_fdcf83cf-d1c5-4deb-83a2-a783c6e324ad" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionHistoricalCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:to="loc_us-gaap_SaleLeasebackTransactionHistoricalCost_fdcf83cf-d1c5-4deb-83a2-a783c6e324ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_SaleLeasebackInitialTerm_78847c5a-21b1-4b17-9cc4-9b87ccc3cdcf" xlink:href="din-20221231.xsd#din_SaleLeasebackInitialTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:to="loc_din_SaleLeasebackInitialTerm_78847c5a-21b1-4b17-9cc4-9b87ccc3cdcf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfOptionsToExtendInitialSaleLeasebackTerm_c727eb4b-375e-4d4f-91ce-1aaa18f1d06d" xlink:href="din-20221231.xsd#din_NumberOfOptionsToExtendInitialSaleLeasebackTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:to="loc_din_NumberOfOptionsToExtendInitialSaleLeasebackTerm_c727eb4b-375e-4d4f-91ce-1aaa18f1d06d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ExtensionsPeriodForOptionToExtendSaleLeasebackInitialTermInYears_cca5a145-3b48-482d-9684-c71a225db869" xlink:href="din-20221231.xsd#din_ExtensionsPeriodForOptionToExtendSaleLeasebackInitialTermInYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:to="loc_din_ExtensionsPeriodForOptionToExtendSaleLeasebackInitialTermInYears_cca5a145-3b48-482d-9684-c71a225db869" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_PropertiesAssignedToFranchiseeOrReleasedFromLessor_6251f79c-22b0-4eb2-8f0d-0e018d5b36e6" xlink:href="din-20221231.xsd#din_PropertiesAssignedToFranchiseeOrReleasedFromLessor"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:to="loc_din_PropertiesAssignedToFranchiseeOrReleasedFromLessor_6251f79c-22b0-4eb2-8f0d-0e018d5b36e6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ReductionInPropertyAndEquipmentAndFinancingObligationsAsResultOfSalesTransactions_2a01a46f-d876-4972-bd2e-a4e6a521a096" xlink:href="din-20221231.xsd#din_ReductionInPropertyAndEquipmentAndFinancingObligationsAsResultOfSalesTransactions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:to="loc_din_ReductionInPropertyAndEquipmentAndFinancingObligationsAsResultOfSalesTransactions_2a01a46f-d876-4972-bd2e-a4e6a521a096" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionTable_efd82715-ae10-49d5-a22e-220c9b09e533" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_a9922fe2-7093-4b12-8cfc-454ee7e9da9e" xlink:to="loc_us-gaap_SaleLeasebackTransactionTable_efd82715-ae10-49d5-a22e-220c9b09e533" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_f7da173c-714e-4931-914f-1fde57ceb10e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SaleLeasebackTransactionTable_efd82715-ae10-49d5-a22e-220c9b09e533" xlink:to="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_f7da173c-714e-4931-914f-1fde57ceb10e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNameDomain_f7da173c-714e-4931-914f-1fde57ceb10e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_f7da173c-714e-4931-914f-1fde57ceb10e" xlink:to="loc_us-gaap_SaleLeasebackTransactionNameDomain_f7da173c-714e-4931-914f-1fde57ceb10e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNameDomain_5e75effd-d7d6-490d-b4cd-e1cfd5690c94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_f7da173c-714e-4931-914f-1fde57ceb10e" xlink:to="loc_us-gaap_SaleLeasebackTransactionNameDomain_5e75effd-d7d6-490d-b4cd-e1cfd5690c94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_SaleLeasebackTransactionAgreementForPropertiesMember_965b01bb-bc07-4d04-9e86-a98431fd9752" xlink:href="din-20221231.xsd#din_SaleLeasebackTransactionAgreementForPropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionNameDomain_5e75effd-d7d6-490d-b4cd-e1cfd5690c94" xlink:to="loc_din_SaleLeasebackTransactionAgreementForPropertiesMember_965b01bb-bc07-4d04-9e86-a98431fd9752" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_MasterLeaseAgreementMember_08e9de8d-8383-4578-b95c-589827d2cfd5" xlink:href="din-20221231.xsd#din_MasterLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionNameDomain_5e75effd-d7d6-490d-b4cd-e1cfd5690c94" xlink:to="loc_din_MasterLeaseAgreementMember_08e9de8d-8383-4578-b95c-589827d2cfd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_SaleLeasebackTransactionsMember_a868e8f5-dfcb-4e8a-91ab-05528e953554" xlink:href="din-20221231.xsd#din_SaleLeasebackTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionNameDomain_5e75effd-d7d6-490d-b4cd-e1cfd5690c94" xlink:to="loc_din_SaleLeasebackTransactionsMember_a868e8f5-dfcb-4e8a-91ab-05528e953554" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/FinancingObligationsFutureMinimumLeasePaymentsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#FinancingObligationsFutureMinimumLeasePaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/FinancingObligationsFutureMinimumLeasePaymentsDetails" xlink:type="extended" id="i364a2d869ffe4deb9fefee7e72649845_FinancingObligationsFutureMinimumLeasePaymentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_c6188be0-595b-4b54-b9d0-94856be8c4c3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_c6188be0-595b-4b54-b9d0-94856be8c4c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_0d14b16b-9bd7-4102-b480-042e9559c4a3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_0d14b16b-9bd7-4102-b480-042e9559c4a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_3aa52f40-51cc-4143-a588-25fda5bb519f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_3aa52f40-51cc-4143-a588-25fda5bb519f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_0b62f3c5-c3ef-44b3-b9fe-797113299ffb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_0b62f3c5-c3ef-44b3-b9fe-797113299ffb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_c2443aac-2aa8-47f6-b1ae-2b3118d3d444" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_c2443aac-2aa8-47f6-b1ae-2b3118d3d444" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_b83ef169-f64f-4332-afe7-fde073e6831e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_b83ef169-f64f-4332-afe7-fde073e6831e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_6707361c-e387-406e-bd02-40b0626a5a0c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_6707361c-e387-406e-bd02-40b0626a5a0c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_13a4800a-b7c5-4d23-97e7-ce21b63f27a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_13a4800a-b7c5-4d23-97e7-ce21b63f27a1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_bb629266-5c63-4e93-84d3-809f4d5ab004" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiability_bb629266-5c63-4e93-84d3-809f4d5ab004" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_93cb9229-0ba4-4211-bcb1-0586dc9856ea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_93cb9229-0ba4-4211-bcb1-0586dc9856ea" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_a576f3b7-55b5-40a3-9f92-a8bb257a59fb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_a576f3b7-55b5-40a3-9f92-a8bb257a59fb" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionTable_8d032e89-cb04-4a9f-8ae9-8c7cc6d08f96" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SaleLeasebackTransactionLineItems_b976e3bb-2981-4f3c-bc25-04a705c57e5c" xlink:to="loc_us-gaap_SaleLeasebackTransactionTable_8d032e89-cb04-4a9f-8ae9-8c7cc6d08f96" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_266cb4f4-5834-4060-a5d9-c2d49503223b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SaleLeasebackTransactionTable_8d032e89-cb04-4a9f-8ae9-8c7cc6d08f96" xlink:to="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_266cb4f4-5834-4060-a5d9-c2d49503223b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNameDomain_266cb4f4-5834-4060-a5d9-c2d49503223b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_266cb4f4-5834-4060-a5d9-c2d49503223b" xlink:to="loc_us-gaap_SaleLeasebackTransactionNameDomain_266cb4f4-5834-4060-a5d9-c2d49503223b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNameDomain_ca3dfef3-60d0-40c5-a117-c989a33f1e0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleLeasebackTransactionNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_266cb4f4-5834-4060-a5d9-c2d49503223b" xlink:to="loc_us-gaap_SaleLeasebackTransactionNameDomain_ca3dfef3-60d0-40c5-a117-c989a33f1e0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_SaleLeasebackTransactionsMember_f9205af9-dca7-447b-9f9d-2e3c6439bd3a" xlink:href="din-20221231.xsd#din_SaleLeasebackTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionNameDomain_ca3dfef3-60d0-40c5-a117-c989a33f1e0b" xlink:to="loc_din_SaleLeasebackTransactionsMember_f9205af9-dca7-447b-9f9d-2e3c6439bd3a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/LeasesNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#LeasesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/LeasesNarrativeDetails" xlink:type="extended" id="i36bf209f9c284b36b68c9a316e04186f_LeasesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LesseeNumberofFranchiseeoperatedRestaurants_8aeafc45-9111-4aa8-bce8-9e722c51a73b" xlink:href="din-20221231.xsd#din_LesseeNumberofFranchiseeoperatedRestaurants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_din_LesseeNumberofFranchiseeoperatedRestaurants_8aeafc45-9111-4aa8-bce8-9e722c51a73b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LessorNumberofPropertiesLeased_0660d98d-0bc4-47b9-ba70-8fc910d4b518" xlink:href="din-20221231.xsd#din_LessorNumberofPropertiesLeased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_din_LessorNumberofPropertiesLeased_0660d98d-0bc4-47b9-ba70-8fc910d4b518" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_eaa43112-9747-45c6-8e30-bc7452fce54b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_eaa43112-9747-45c6-8e30-bc7452fce54b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_c53eeb5e-23ee-4cb2-9c9e-7969fa131fe9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_c53eeb5e-23ee-4cb2-9c9e-7969fa131fe9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LessorNumberofLeasesRequiringAdditionalRentPaymentsBasedOnAPercentageOfRestaurantSales_6673fc57-6555-4d9c-aa76-3c7480be5603" xlink:href="din-20221231.xsd#din_LessorNumberofLeasesRequiringAdditionalRentPaymentsBasedOnAPercentageOfRestaurantSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_din_LessorNumberofLeasesRequiringAdditionalRentPaymentsBasedOnAPercentageOfRestaurantSales_6673fc57-6555-4d9c-aa76-3c7480be5603" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LesseeNumberofLeasesRequiringAdditionalRentPaymentsBasedOnAPercentageOfRestaurantSales_85bd6770-a856-4dee-b170-b866707aeb81" xlink:href="din-20221231.xsd#din_LesseeNumberofLeasesRequiringAdditionalRentPaymentsBasedOnAPercentageOfRestaurantSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_din_LesseeNumberofLeasesRequiringAdditionalRentPaymentsBasedOnAPercentageOfRestaurantSales_85bd6770-a856-4dee-b170-b866707aeb81" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_442b8f1e-5d8a-4e17-85e0-258aab578853" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_442b8f1e-5d8a-4e17-85e0-258aab578853" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_57ac5753-d285-44e2-909e-d6cac81e51b5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_57ac5753-d285-44e2-909e-d6cac81e51b5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_f31131d7-d0d9-46eb-8e70-9e41387a95b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_f31131d7-d0d9-46eb-8e70-9e41387a95b9" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_3c214712-4eca-4b72-ad99-bfe606c40764" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_3c214712-4eca-4b72-ad99-bfe606c40764" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_b08e3319-6a45-4123-8555-2b148a39b261" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_085f059f-0e8a-4b3b-8848-67c4daf63f59" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_b08e3319-6a45-4123-8555-2b148a39b261" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3e7e5cee-8e79-4d1f-81cf-cc2ed8e69c04" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_b08e3319-6a45-4123-8555-2b148a39b261" xlink:to="loc_dei_LegalEntityAxis_3e7e5cee-8e79-4d1f-81cf-cc2ed8e69c04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3e7e5cee-8e79-4d1f-81cf-cc2ed8e69c04_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3e7e5cee-8e79-4d1f-81cf-cc2ed8e69c04" xlink:to="loc_dei_EntityDomain_3e7e5cee-8e79-4d1f-81cf-cc2ed8e69c04_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0d3ce4b0-6bf0-4e67-a145-b988728ff84b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3e7e5cee-8e79-4d1f-81cf-cc2ed8e69c04" xlink:to="loc_dei_EntityDomain_0d3ce4b0-6bf0-4e67-a145-b988728ff84b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_IhopMember_b9eac7ce-1d2e-46e3-bdad-a0f15f3a235d" xlink:href="din-20221231.xsd#din_IhopMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0d3ce4b0-6bf0-4e67-a145-b988728ff84b" xlink:to="loc_din_IhopMember_b9eac7ce-1d2e-46e3-bdad-a0f15f3a235d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_a544db18-32c8-49d1-b6a6-1f40feeed9bf" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0d3ce4b0-6bf0-4e67-a145-b988728ff84b" xlink:to="loc_din_ApplebeesMember_a544db18-32c8-49d1-b6a6-1f40feeed9bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_1c750397-064e-43cb-9efa-d7db605417a5" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_b08e3319-6a45-4123-8555-2b148a39b261" xlink:to="loc_srt_RangeAxis_1c750397-064e-43cb-9efa-d7db605417a5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1c750397-064e-43cb-9efa-d7db605417a5_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1c750397-064e-43cb-9efa-d7db605417a5" xlink:to="loc_srt_RangeMember_1c750397-064e-43cb-9efa-d7db605417a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e2e997bc-0f19-4f8e-a6c3-24ef31c53c31" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1c750397-064e-43cb-9efa-d7db605417a5" xlink:to="loc_srt_RangeMember_e2e997bc-0f19-4f8e-a6c3-24ef31c53c31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_b448ba26-6d19-49ca-8685-eb027e2be77a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e2e997bc-0f19-4f8e-a6c3-24ef31c53c31" xlink:to="loc_srt_MinimumMember_b448ba26-6d19-49ca-8685-eb027e2be77a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_7e236630-9f91-4b78-a701-dc89a0f1673c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e2e997bc-0f19-4f8e-a6c3-24ef31c53c31" xlink:to="loc_srt_MaximumMember_7e236630-9f91-4b78-a701-dc89a0f1673c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/LeasesComponentsofLeaseCostDetails" xlink:type="simple" xlink:href="din-20221231.xsd#LeasesComponentsofLeaseCostDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/LeasesComponentsofLeaseCostDetails" xlink:type="extended" id="idd4f6df6f2424f6abedbf96ca771733c_LeasesComponentsofLeaseCostDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_d86752dc-dd70-4dd1-bb86-b29f16472bb4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCostAbstract_977ff355-089f-4538-85fb-07ba68255ea8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseCostAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d86752dc-dd70-4dd1-bb86-b29f16472bb4" xlink:to="loc_us-gaap_LeaseCostAbstract_977ff355-089f-4538-85fb-07ba68255ea8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_1224b0da-7165-4de4-a4b0-f95b5cc55dc6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseCostAbstract_977ff355-089f-4538-85fb-07ba68255ea8" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_1224b0da-7165-4de4-a4b0-f95b5cc55dc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseInterestExpense_16a6df86-ba46-4860-b2e3-da92d4c4270d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseCostAbstract_977ff355-089f-4538-85fb-07ba68255ea8" xlink:to="loc_us-gaap_FinanceLeaseInterestExpense_16a6df86-ba46-4860-b2e3-da92d4c4270d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_afbce9aa-5f7b-4148-bd1b-962c6cb44d93" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d86752dc-dd70-4dd1-bb86-b29f16472bb4" xlink:to="loc_us-gaap_OperatingLeaseCost_afbce9aa-5f7b-4148-bd1b-962c6cb44d93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_707658e9-cd00-4702-b9f8-5f6fca068d65" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableLeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d86752dc-dd70-4dd1-bb86-b29f16472bb4" xlink:to="loc_us-gaap_VariableLeaseCost_707658e9-cd00-4702-b9f8-5f6fca068d65" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermLeaseCost_c3dd4e25-07d0-44b0-b519-bf8f07ec54e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShortTermLeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d86752dc-dd70-4dd1-bb86-b29f16472bb4" xlink:to="loc_us-gaap_ShortTermLeaseCost_c3dd4e25-07d0-44b0-b519-bf8f07ec54e6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubleaseIncome_098d214d-6bb3-4aeb-bd3f-151c62a28c90" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubleaseIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d86752dc-dd70-4dd1-bb86-b29f16472bb4" xlink:to="loc_us-gaap_SubleaseIncome_098d214d-6bb3-4aeb-bd3f-151c62a28c90" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_39cf691b-4c4c-42e1-9eff-d1e40d528a54" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d86752dc-dd70-4dd1-bb86-b29f16472bb4" xlink:to="loc_us-gaap_LeaseCost_39cf691b-4c4c-42e1-9eff-d1e40d528a54" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_f2669239-d4eb-4c76-a19b-0a9349449a0f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d86752dc-dd70-4dd1-bb86-b29f16472bb4" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_f2669239-d4eb-4c76-a19b-0a9349449a0f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_4a459313-3530-4c07-8767-467481c96c3c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_f2669239-d4eb-4c76-a19b-0a9349449a0f" xlink:to="loc_srt_RestatementAxis_4a459313-3530-4c07-8767-467481c96c3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_4a459313-3530-4c07-8767-467481c96c3c_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_4a459313-3530-4c07-8767-467481c96c3c" xlink:to="loc_srt_RestatementDomain_4a459313-3530-4c07-8767-467481c96c3c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_4a9af7c8-f433-4fab-aafa-bdba744486d1" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_4a459313-3530-4c07-8767-467481c96c3c" xlink:to="loc_srt_RestatementDomain_4a9af7c8-f433-4fab-aafa-bdba744486d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_c06749f8-6d9e-4c43-9277-337d8bce2cee" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioPreviouslyReportedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_4a9af7c8-f433-4fab-aafa-bdba744486d1" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_c06749f8-6d9e-4c43-9277-337d8bce2cee" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/CommitmentsandContingenciesDetails" xlink:type="simple" xlink:href="din-20221231.xsd#CommitmentsandContingenciesDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/CommitmentsandContingenciesDetails" xlink:type="extended" id="i2394f6a92dca45129fd8947ec082b771_CommitmentsandContingenciesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_10e49b76-6c26-45d5-aa8c-f903d782bb28" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted_d68f788f-94d6-42c0-a531-2786508aa365" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_10e49b76-6c26-45d5-aa8c-f903d782bb28" xlink:to="loc_us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted_d68f788f-94d6-42c0-a531-2786508aa365" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_cc26201b-8dfe-4d02-82e9-58023d75b048" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_10e49b76-6c26-45d5-aa8c-f903d782bb28" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_cc26201b-8dfe-4d02-82e9-58023d75b048" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_GuarantorObligationsMaximumExposureExcludingUnexercisedOptionPeriodsUndiscounted_5e37ae7f-59ef-4904-92b7-7dfbf0fb7cc2" xlink:href="din-20221231.xsd#din_GuarantorObligationsMaximumExposureExcludingUnexercisedOptionPeriodsUndiscounted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_10e49b76-6c26-45d5-aa8c-f903d782bb28" xlink:to="loc_din_GuarantorObligationsMaximumExposureExcludingUnexercisedOptionPeriodsUndiscounted_5e37ae7f-59ef-4904-92b7-7dfbf0fb7cc2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_0f1d3861-e3db-426a-b279-641f2de007f4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_10e49b76-6c26-45d5-aa8c-f903d782bb28" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_0f1d3861-e3db-426a-b279-641f2de007f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_fba667ff-8c45-4fd2-b917-f3f05cbc85f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_10e49b76-6c26-45d5-aa8c-f903d782bb28" xlink:to="loc_us-gaap_LossContingenciesTable_fba667ff-8c45-4fd2-b917-f3f05cbc85f1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis_2f78fd95-69af-4ce9-bdde-db8aba42125c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_fba667ff-8c45-4fd2-b917-f3f05cbc85f1" xlink:to="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis_2f78fd95-69af-4ce9-bdde-db8aba42125c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentDomain_2f78fd95-69af-4ce9-bdde-db8aba42125c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PurchaseCommitmentExcludingLongtermCommitmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis_2f78fd95-69af-4ce9-bdde-db8aba42125c" xlink:to="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentDomain_2f78fd95-69af-4ce9-bdde-db8aba42125c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentDomain_99594919-9ec4-4f7a-ae49-24c517c47b5b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PurchaseCommitmentExcludingLongtermCommitmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis_2f78fd95-69af-4ce9-bdde-db8aba42125c" xlink:to="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentDomain_99594919-9ec4-4f7a-ae49-24c517c47b5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpenseMember_efcb4b16-99a3-4e36-bea2-49536c562f2b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SellingAndMarketingExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseCommitmentExcludingLongtermCommitmentDomain_99594919-9ec4-4f7a-ae49-24c517c47b5b" xlink:to="loc_us-gaap_SellingAndMarketingExpenseMember_efcb4b16-99a3-4e36-bea2-49536c562f2b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_6b2fe7ea-6929-4dbd-b408-16b63825b378" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_fba667ff-8c45-4fd2-b917-f3f05cbc85f1" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_6b2fe7ea-6929-4dbd-b408-16b63825b378" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_6b2fe7ea-6929-4dbd-b408-16b63825b378_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_6b2fe7ea-6929-4dbd-b408-16b63825b378" xlink:to="loc_us-gaap_LossContingencyNatureDomain_6b2fe7ea-6929-4dbd-b408-16b63825b378_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_40586616-cb6d-4202-b710-b75f238f6ab0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_6b2fe7ea-6929-4dbd-b408-16b63825b378" xlink:to="loc_us-gaap_LossContingencyNatureDomain_40586616-cb6d-4202-b710-b75f238f6ab0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyLeaseGuaranteeMember_cfb02018-7e2c-4315-ade2-374f88280894" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyLeaseGuaranteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_40586616-cb6d-4202-b710-b75f238f6ab0" xlink:to="loc_us-gaap_PropertyLeaseGuaranteeMember_cfb02018-7e2c-4315-ade2-374f88280894" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_2da3eb07-f0ca-49ac-921b-a556cf4db40a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_fba667ff-8c45-4fd2-b917-f3f05cbc85f1" xlink:to="loc_dei_LegalEntityAxis_2da3eb07-f0ca-49ac-921b-a556cf4db40a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2da3eb07-f0ca-49ac-921b-a556cf4db40a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_2da3eb07-f0ca-49ac-921b-a556cf4db40a" xlink:to="loc_dei_EntityDomain_2da3eb07-f0ca-49ac-921b-a556cf4db40a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_40baa2c5-0608-4dbb-9d7e-d1bd2537d1d0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_2da3eb07-f0ca-49ac-921b-a556cf4db40a" xlink:to="loc_dei_EntityDomain_40baa2c5-0608-4dbb-9d7e-d1bd2537d1d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_0edfbae6-55a4-496a-8658-90d089a7bffc" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_40baa2c5-0608-4dbb-9d7e-d1bd2537d1d0" xlink:to="loc_din_ApplebeesMember_0edfbae6-55a4-496a-8658-90d089a7bffc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_0c749a9e-afc3-450a-912c-914872402dc7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_fba667ff-8c45-4fd2-b917-f3f05cbc85f1" xlink:to="loc_us-gaap_CreditFacilityAxis_0c749a9e-afc3-450a-912c-914872402dc7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_0c749a9e-afc3-450a-912c-914872402dc7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_0c749a9e-afc3-450a-912c-914872402dc7" xlink:to="loc_us-gaap_CreditFacilityDomain_0c749a9e-afc3-450a-912c-914872402dc7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_b522d6ca-37b9-430f-a219-e09ea57a8ae1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_0c749a9e-afc3-450a-912c-914872402dc7" xlink:to="loc_us-gaap_CreditFacilityDomain_b522d6ca-37b9-430f-a219-e09ea57a8ae1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_624a65b0-c4f3-4fba-9830-a486ff347ae1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_b522d6ca-37b9-430f-a219-e09ea57a8ae1" xlink:to="loc_us-gaap_LetterOfCreditMember_624a65b0-c4f3-4fba-9830-a486ff347ae1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_1816b78f-9540-43fe-bac7-8d4ff688c7bc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_fba667ff-8c45-4fd2-b917-f3f05cbc85f1" xlink:to="loc_us-gaap_DebtInstrumentAxis_1816b78f-9540-43fe-bac7-8d4ff688c7bc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_1816b78f-9540-43fe-bac7-8d4ff688c7bc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_1816b78f-9540-43fe-bac7-8d4ff688c7bc" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_1816b78f-9540-43fe-bac7-8d4ff688c7bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_495ad0d2-d516-43b8-b0be-1e4ae9539bbf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_1816b78f-9540-43fe-bac7-8d4ff688c7bc" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_495ad0d2-d516-43b8-b0be-1e4ae9539bbf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_Series20221VariableFundingSeniorNotesClassA1Member_a875376c-8a9e-458d-85ef-0ee6e338f15a" xlink:href="din-20221231.xsd#din_Series20221VariableFundingSeniorNotesClassA1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_495ad0d2-d516-43b8-b0be-1e4ae9539bbf" xlink:to="loc_din_Series20221VariableFundingSeniorNotesClassA1Member_a875376c-8a9e-458d-85ef-0ee6e338f15a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/StockholdersDeficitNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#StockholdersDeficitNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/StockholdersDeficitNarrativeDetails" xlink:type="extended" id="ifb4d3456889c4267bd2f631e91253c78_StockholdersDeficitNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_0667422d-f3b2-4064-bfea-fa1c6d62141c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_adcedf06-adc4-40e6-92aa-b95f0af8c6f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_0667422d-f3b2-4064-bfea-fa1c6d62141c" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_adcedf06-adc4-40e6-92aa-b95f0af8c6f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_97d13085-8625-4c43-8758-eca4b5804e40" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_0667422d-f3b2-4064-bfea-fa1c6d62141c" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_97d13085-8625-4c43-8758-eca4b5804e40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_64baaf7d-fa23-47bd-a760-6cf8f9ba2a66" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_0667422d-f3b2-4064-bfea-fa1c6d62141c" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_64baaf7d-fa23-47bd-a760-6cf8f9ba2a66" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued_107e1015-64c0-48e8-9886-d1197fe6e43d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_0667422d-f3b2-4064-bfea-fa1c6d62141c" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued_107e1015-64c0-48e8-9886-d1197fe6e43d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_16ad057d-c267-4b96-838a-222ac6f92432" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_0667422d-f3b2-4064-bfea-fa1c6d62141c" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_16ad057d-c267-4b96-838a-222ac6f92432" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_d39be70d-7e7f-42b1-a7da-a73c69ee2612" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_0667422d-f3b2-4064-bfea-fa1c6d62141c" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_d39be70d-7e7f-42b1-a7da-a73c69ee2612" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_29d60deb-7e30-4f7e-a278-56d2c632842c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_d39be70d-7e7f-42b1-a7da-a73c69ee2612" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_29d60deb-7e30-4f7e-a278-56d2c632842c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_29d60deb-7e30-4f7e-a278-56d2c632842c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_29d60deb-7e30-4f7e-a278-56d2c632842c" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_29d60deb-7e30-4f7e-a278-56d2c632842c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_0d6a7b03-ef11-46a6-9514-f3bdbd83f90f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_29d60deb-7e30-4f7e-a278-56d2c632842c" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_0d6a7b03-ef11-46a6-9514-f3bdbd83f90f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_TwoThousandNineteenRepurchaseProgramMember_34b7b492-4048-4f02-acf1-a9b2fc7df37d" xlink:href="din-20221231.xsd#din_TwoThousandNineteenRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_0d6a7b03-ef11-46a6-9514-f3bdbd83f90f" xlink:to="loc_din_TwoThousandNineteenRepurchaseProgramMember_34b7b492-4048-4f02-acf1-a9b2fc7df37d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_TwoThousandTwentyTwoRepurchaseProgramMember_e115b9f6-58d9-4cc1-a339-28e27a2dd7c7" xlink:href="din-20221231.xsd#din_TwoThousandTwentyTwoRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_0d6a7b03-ef11-46a6-9514-f3bdbd83f90f" xlink:to="loc_din_TwoThousandTwentyTwoRepurchaseProgramMember_e115b9f6-58d9-4cc1-a339-28e27a2dd7c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_5f8711b9-ce8f-4760-9e58-696026197325" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_d39be70d-7e7f-42b1-a7da-a73c69ee2612" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_5f8711b9-ce8f-4760-9e58-696026197325" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_5f8711b9-ce8f-4760-9e58-696026197325_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_5f8711b9-ce8f-4760-9e58-696026197325" xlink:to="loc_us-gaap_EquityComponentDomain_5f8711b9-ce8f-4760-9e58-696026197325_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_119a2b0c-28eb-40a3-aff9-ea244180a5d7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_5f8711b9-ce8f-4760-9e58-696026197325" xlink:to="loc_us-gaap_EquityComponentDomain_119a2b0c-28eb-40a3-aff9-ea244180a5d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockMember_d53a3003-fa28-4520-9a41-7cedec7798c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_119a2b0c-28eb-40a3-aff9-ea244180a5d7" xlink:to="loc_us-gaap_TreasuryStockMember_d53a3003-fa28-4520-9a41-7cedec7798c5" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/StockholdersDeficitShareRepurchasesDetails" xlink:type="simple" xlink:href="din-20221231.xsd#StockholdersDeficitShareRepurchasesDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/StockholdersDeficitShareRepurchasesDetails" xlink:type="extended" id="ia2cbd3b4ac154b9aacb071f04b07975e_StockholdersDeficitShareRepurchasesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_f730e5a0-b070-47fa-bbef-af0f52946b0f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_83dfa864-ae93-45d5-a0a6-4da0b5296839" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f730e5a0-b070-47fa-bbef-af0f52946b0f" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_83dfa864-ae93-45d5-a0a6-4da0b5296839" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_1c385145-c527-43d8-92d8-0f854bd18321" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f730e5a0-b070-47fa-bbef-af0f52946b0f" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_1c385145-c527-43d8-92d8-0f854bd18321" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_CumulativeAmountOfSharesRepurchased_14787d9a-f412-4045-b382-456415114672" xlink:href="din-20221231.xsd#din_CumulativeAmountOfSharesRepurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f730e5a0-b070-47fa-bbef-af0f52946b0f" xlink:to="loc_din_CumulativeAmountOfSharesRepurchased_14787d9a-f412-4045-b382-456415114672" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_CumulativePaymentsForRepurchaseOfCommonStock_b81b35b8-53bb-416b-87f8-626ddf6ab201" xlink:href="din-20221231.xsd#din_CumulativePaymentsForRepurchaseOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f730e5a0-b070-47fa-bbef-af0f52946b0f" xlink:to="loc_din_CumulativePaymentsForRepurchaseOfCommonStock_b81b35b8-53bb-416b-87f8-626ddf6ab201" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_1a83b005-4b7b-450c-8db7-2e37d74056e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f730e5a0-b070-47fa-bbef-af0f52946b0f" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_1a83b005-4b7b-450c-8db7-2e37d74056e3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_0add9d7f-4c8b-48b6-bf74-f71290eddbbc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_f730e5a0-b070-47fa-bbef-af0f52946b0f" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_0add9d7f-4c8b-48b6-bf74-f71290eddbbc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_9cef4667-5e6c-4387-aecb-67ac1ddd9ab4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_0add9d7f-4c8b-48b6-bf74-f71290eddbbc" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_9cef4667-5e6c-4387-aecb-67ac1ddd9ab4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_9cef4667-5e6c-4387-aecb-67ac1ddd9ab4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_9cef4667-5e6c-4387-aecb-67ac1ddd9ab4" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_9cef4667-5e6c-4387-aecb-67ac1ddd9ab4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_5cf08756-e932-4784-853d-0ef5a931837e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_9cef4667-5e6c-4387-aecb-67ac1ddd9ab4" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_5cf08756-e932-4784-853d-0ef5a931837e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_TwoThousandTwentyTwoRepurchaseProgramMember_621a09bf-98dc-4ddf-92cf-e49d0766914b" xlink:href="din-20221231.xsd#din_TwoThousandTwentyTwoRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_5cf08756-e932-4784-853d-0ef5a931837e" xlink:to="loc_din_TwoThousandTwentyTwoRepurchaseProgramMember_621a09bf-98dc-4ddf-92cf-e49d0766914b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_TwoThousandNineteenRepurchaseProgramMember_dd0e6d20-2f72-44ca-bc15-8b6ca674009e" xlink:href="din-20221231.xsd#din_TwoThousandNineteenRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_5cf08756-e932-4784-853d-0ef5a931837e" xlink:to="loc_din_TwoThousandNineteenRepurchaseProgramMember_dd0e6d20-2f72-44ca-bc15-8b6ca674009e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/StockholdersDeficitScheduleofDividendsDeclaredDetails" xlink:type="simple" xlink:href="din-20221231.xsd#StockholdersDeficitScheduleofDividendsDeclaredDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/StockholdersDeficitScheduleofDividendsDeclaredDetails" xlink:type="extended" id="i7c1feb41d1154c9098e5f5b0bbeb1e7a_StockholdersDeficitScheduleofDividendsDeclaredDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_cb6ac5a0-1786-4ec4-8793-1eefacee2392" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_0e270c96-9e90-40b6-9415-e023712e641c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_cb6ac5a0-1786-4ec4-8793-1eefacee2392" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_0e270c96-9e90-40b6-9415-e023712e641c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_f21b2c27-f866-4a04-83f7-b71ea98f095c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockDividendsPerShareCashPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_cb6ac5a0-1786-4ec4-8793-1eefacee2392" xlink:to="loc_us-gaap_CommonStockDividendsPerShareCashPaid_f21b2c27-f866-4a04-83f7-b71ea98f095c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_072b11dc-8d44-4ad0-b776-6a73af2443ad" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfDividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_cb6ac5a0-1786-4ec4-8793-1eefacee2392" xlink:to="loc_us-gaap_PaymentsOfDividends_072b11dc-8d44-4ad0-b776-6a73af2443ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_3ff29992-86c9-427c-a693-f7a7f805b9ff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_cb6ac5a0-1786-4ec4-8793-1eefacee2392" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_3ff29992-86c9-427c-a693-f7a7f805b9ff" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_c662cbae-e0a5-4eb5-942c-25a1d09ae6e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_3ff29992-86c9-427c-a693-f7a7f805b9ff" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_c662cbae-e0a5-4eb5-942c-25a1d09ae6e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_c662cbae-e0a5-4eb5-942c-25a1d09ae6e5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_c662cbae-e0a5-4eb5-942c-25a1d09ae6e5" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_c662cbae-e0a5-4eb5-942c-25a1d09ae6e5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_f1948095-4722-4fac-9340-13bb7cbc95ff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_c662cbae-e0a5-4eb5-942c-25a1d09ae6e5" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_f1948095-4722-4fac-9340-13bb7cbc95ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_4b816235-abd6-4945-b399-b56bcdf14cab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_f1948095-4722-4fac-9340-13bb7cbc95ff" xlink:to="loc_us-gaap_SubsequentEventMember_4b816235-abd6-4945-b399-b56bcdf14cab" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/ClosureandLonglivedTangibleAssetImpairmentChargesNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#ClosureandLonglivedTangibleAssetImpairmentChargesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/ClosureandLonglivedTangibleAssetImpairmentChargesNarrativeDetails" xlink:type="extended" id="ia43d76ff07d14f9db88c50d82e5916dc_ClosureandLonglivedTangibleAssetImpairmentChargesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_de211eb4-e54e-4b1d-ba45-e11a669ee47d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_us-gaap_RestructuringCharges_de211eb4-e54e-4b1d-ba45-e11a669ee47d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessExitCosts1_9c1e23fc-cb7e-486b-b451-755d54c0ea6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessExitCosts1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_us-gaap_BusinessExitCosts1_9c1e23fc-cb7e-486b-b451-755d54c0ea6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfRestaurantsRelatedToClosureCharges_27f16257-6c3b-4d44-b5ae-b57d1dbb602a" xlink:href="din-20221231.xsd#din_NumberOfRestaurantsRelatedToClosureCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_din_NumberOfRestaurantsRelatedToClosureCharges_27f16257-6c3b-4d44-b5ae-b57d1dbb602a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ImpairmentPerAssetOfLongLivedAssetsToBeDisposedOf_5b2c7174-c97a-444f-b2b3-d23105d0d3c8" xlink:href="din-20221231.xsd#din_ImpairmentPerAssetOfLongLivedAssetsToBeDisposedOf"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_din_ImpairmentPerAssetOfLongLivedAssetsToBeDisposedOf_5b2c7174-c97a-444f-b2b3-d23105d0d3c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfRestaurantsRelatedToPriorPeriodClosureChargeRevisions_f1457a4c-adf4-4b9c-8eee-ae3bbc8f0bb2" xlink:href="din-20221231.xsd#din_NumberOfRestaurantsRelatedToPriorPeriodClosureChargeRevisions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_din_NumberOfRestaurantsRelatedToPriorPeriodClosureChargeRevisions_f1457a4c-adf4-4b9c-8eee-ae3bbc8f0bb2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveAccrualAdjustment1_16d11d87-23cd-4028-abf0-8a6b8b3d984c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestructuringReserveAccrualAdjustment1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_us-gaap_RestructuringReserveAccrualAdjustment1_16d11d87-23cd-4028-abf0-8a6b8b3d984c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfRestaurantsSubjectToClosureCharges_14348beb-a29a-4c16-b9b4-e7b3d512cfe8" xlink:href="din-20221231.xsd#din_NumberOfRestaurantsSubjectToClosureCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_din_NumberOfRestaurantsSubjectToClosureCharges_14348beb-a29a-4c16-b9b4-e7b3d512cfe8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_36e24afc-a4d8-435c-9f04-b427865aaad1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_36e24afc-a4d8-435c-9f04-b427865aaad1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfRestaurantsSubjectToAssetImpairment_608a63d7-5331-4094-970d-9fc18da90839" xlink:href="din-20221231.xsd#din_NumberOfRestaurantsSubjectToAssetImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_din_NumberOfRestaurantsSubjectToAssetImpairment_608a63d7-5331-4094-970d-9fc18da90839" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_45ed8b62-816c-40fb-9103-10f87fa9c62f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_45ed8b62-816c-40fb-9103-10f87fa9c62f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_cdf42087-ed09-44de-9378-f555ad0f8f3e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_286180e8-529f-4789-a36d-1a92c060c3ff" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_cdf42087-ed09-44de-9378-f555ad0f8f3e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_290e7e46-4178-42b4-ba75-dcb30ace7144" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_cdf42087-ed09-44de-9378-f555ad0f8f3e" xlink:to="loc_dei_LegalEntityAxis_290e7e46-4178-42b4-ba75-dcb30ace7144" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_290e7e46-4178-42b4-ba75-dcb30ace7144_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_290e7e46-4178-42b4-ba75-dcb30ace7144" xlink:to="loc_dei_EntityDomain_290e7e46-4178-42b4-ba75-dcb30ace7144_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_23f9d6c9-856e-4063-9928-d6eb18749470" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_290e7e46-4178-42b4-ba75-dcb30ace7144" xlink:to="loc_dei_EntityDomain_23f9d6c9-856e-4063-9928-d6eb18749470" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_IhopMember_39d0d6c0-eb29-468d-b3a7-2a08476e9d29" xlink:href="din-20221231.xsd#din_IhopMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_23f9d6c9-856e-4063-9928-d6eb18749470" xlink:to="loc_din_IhopMember_39d0d6c0-eb29-468d-b3a7-2a08476e9d29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_bb1ce5fc-76a8-4614-b5a9-b9e7725c8b73" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_23f9d6c9-856e-4063-9928-d6eb18749470" xlink:to="loc_din_ApplebeesMember_bb1ce5fc-76a8-4614-b5a9-b9e7725c8b73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_91f6cead-6b4a-4243-932f-7e26696aa418" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_cdf42087-ed09-44de-9378-f555ad0f8f3e" xlink:to="loc_srt_RangeAxis_91f6cead-6b4a-4243-932f-7e26696aa418" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_91f6cead-6b4a-4243-932f-7e26696aa418_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_91f6cead-6b4a-4243-932f-7e26696aa418" xlink:to="loc_srt_RangeMember_91f6cead-6b4a-4243-932f-7e26696aa418_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_8a2a8df6-880f-4e74-bf14-0e4b3dbca878" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_91f6cead-6b4a-4243-932f-7e26696aa418" xlink:to="loc_srt_RangeMember_8a2a8df6-880f-4e74-bf14-0e4b3dbca878" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_eef49c79-12b7-4387-9cd0-5b34cbfb9f49" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8a2a8df6-880f-4e74-bf14-0e4b3dbca878" xlink:to="loc_srt_MaximumMember_eef49c79-12b7-4387-9cd0-5b34cbfb9f49" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_082214f7-3ba7-4c49-a78b-d3188d086415" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8a2a8df6-880f-4e74-bf14-0e4b3dbca878" xlink:to="loc_srt_MinimumMember_082214f7-3ba7-4c49-a78b-d3188d086415" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureAxis_11a4dfb9-3f4b-4a5c-ad1d-92ea072531ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_cdf42087-ed09-44de-9378-f555ad0f8f3e" xlink:to="loc_us-gaap_FranchisorDisclosureAxis_11a4dfb9-3f4b-4a5c-ad1d-92ea072531ed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_11a4dfb9-3f4b-4a5c-ad1d-92ea072531ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_11a4dfb9-3f4b-4a5c-ad1d-92ea072531ed" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_11a4dfb9-3f4b-4a5c-ad1d-92ea072531ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_23a9232e-c4b5-460c-b79d-77bec02eecbb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_11a4dfb9-3f4b-4a5c-ad1d-92ea072531ed" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_23a9232e-c4b5-460c-b79d-77bec02eecbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityOperatedUnitsMember_e993a122-f90f-429b-8bcb-e588039fdcb2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityOperatedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_23a9232e-c4b5-460c-b79d-77bec02eecbb" xlink:to="loc_us-gaap_EntityOperatedUnitsMember_e993a122-f90f-429b-8bcb-e588039fdcb2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisedUnitsMember_32dcfdd3-4023-4f98-a8d9-c185aaae54c4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_23a9232e-c4b5-460c-b79d-77bec02eecbb" xlink:to="loc_us-gaap_FranchisedUnitsMember_32dcfdd3-4023-4f98-a8d9-c185aaae54c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_925bc062-b6d2-403c-afda-cec7ea0e8e57" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_cdf42087-ed09-44de-9378-f555ad0f8f3e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_925bc062-b6d2-403c-afda-cec7ea0e8e57" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_925bc062-b6d2-403c-afda-cec7ea0e8e57_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_925bc062-b6d2-403c-afda-cec7ea0e8e57" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_925bc062-b6d2-403c-afda-cec7ea0e8e57_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_3c519707-1982-4e05-b7dd-1bc83685394b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_925bc062-b6d2-403c-afda-cec7ea0e8e57" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_3c519707-1982-4e05-b7dd-1bc83685394b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LandBuildingLeaseholdImprovementsAndFinanceLeasesMember_bb57d098-820a-40bb-8f44-60ffa3462b0c" xlink:href="din-20221231.xsd#din_LandBuildingLeaseholdImprovementsAndFinanceLeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_3c519707-1982-4e05-b7dd-1bc83685394b" xlink:to="loc_din_LandBuildingLeaseholdImprovementsAndFinanceLeasesMember_bb57d098-820a-40bb-8f44-60ffa3462b0c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/StockBasedIncentivePlansNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#StockBasedIncentivePlansNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/StockBasedIncentivePlansNarrativeDetails" xlink:type="extended" id="i197cce9693ac4a45b8d6d0a2598636e0_StockBasedIncentivePlansNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions_621954d1-6d63-4f34-a934-0e07c09b1456" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions_621954d1-6d63-4f34-a934-0e07c09b1456" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_42becff5-2151-4d2c-a7dd-6c7ac2075cfd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_42becff5-2151-4d2c-a7dd-6c7ac2075cfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_076e8cc7-a955-4d19-bd88-cf167e6c8d8f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_076e8cc7-a955-4d19-bd88-cf167e6c8d8f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_a9e6ba8b-91d3-4d2d-ad7d-f1479d605583" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_a9e6ba8b-91d3-4d2d-ad7d-f1479d605583" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_UnrecognizedCompensationCostRelatedToOptionsExpectedRecognitionPeriod_c5629208-1ff2-4778-b267-59b361cefd68" xlink:href="din-20221231.xsd#din_UnrecognizedCompensationCostRelatedToOptionsExpectedRecognitionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_din_UnrecognizedCompensationCostRelatedToOptionsExpectedRecognitionPeriod_c5629208-1ff2-4778-b267-59b361cefd68" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_18cb25b1-1717-4040-afe0-27d54537b746" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_18cb25b1-1717-4040-afe0-27d54537b746" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_a4791326-f480-4b71-b844-c8d50d3c0baf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_a4791326-f480-4b71-b844-c8d50d3c0baf" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxExpenseFromStockOptionsExercised_ee7be03d-b975-4a09-b687-0f06b70b366e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxExpenseFromStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_DeferredTaxExpenseFromStockOptionsExercised_ee7be03d-b975-4a09-b687-0f06b70b366e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_7428b353-c20a-4b78-881b-2832efa59fbc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_7428b353-c20a-4b78-881b-2832efa59fbc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ShareBasedCompensationMultiplierForTargetAwardBasedOnTotalShareholderReturnOnCommonStock_252ebda5-b8d4-4fc5-ba8f-0a1c100ebd28" xlink:href="din-20221231.xsd#din_ShareBasedCompensationMultiplierForTargetAwardBasedOnTotalShareholderReturnOnCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_din_ShareBasedCompensationMultiplierForTargetAwardBasedOnTotalShareholderReturnOnCommonStock_252ebda5-b8d4-4fc5-ba8f-0a1c100ebd28" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_f5e7ba6b-d3f1-4428-b181-a3ff53ab49ff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_f5e7ba6b-d3f1-4428-b181-a3ff53ab49ff" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_57500157-8311-4eb0-8e8f-8e3f52f39259" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_57500157-8311-4eb0-8e8f-8e3f52f39259" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_38e6e490-93fc-42c1-947c-6ebb6a2a68d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_97428dc4-df6d-48ad-a2ec-7a560e52da17" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_38e6e490-93fc-42c1-947c-6ebb6a2a68d0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_829dea00-9b44-44cc-b098-900bc124bc07" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_38e6e490-93fc-42c1-947c-6ebb6a2a68d0" xlink:to="loc_us-gaap_PlanNameAxis_829dea00-9b44-44cc-b098-900bc124bc07" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_829dea00-9b44-44cc-b098-900bc124bc07_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_829dea00-9b44-44cc-b098-900bc124bc07" xlink:to="loc_us-gaap_PlanNameDomain_829dea00-9b44-44cc-b098-900bc124bc07_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_1695ef79-4ab9-4d83-9956-e3ad8fddb4bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_829dea00-9b44-44cc-b098-900bc124bc07" xlink:to="loc_us-gaap_PlanNameDomain_1695ef79-4ab9-4d83-9956-e3ad8fddb4bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_TwoThousandNineteenStockIncentivePlanMember_ab3b43b7-04b4-4f67-8975-716789e1020d" xlink:href="din-20221231.xsd#din_TwoThousandNineteenStockIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_1695ef79-4ab9-4d83-9956-e3ad8fddb4bf" xlink:to="loc_din_TwoThousandNineteenStockIncentivePlanMember_ab3b43b7-04b4-4f67-8975-716789e1020d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DineEquityInc.2016StockIncentivePlanMember_415ab1f4-bfd8-46d1-9e2b-c5c9020df950" xlink:href="din-20221231.xsd#din_DineEquityInc.2016StockIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_1695ef79-4ab9-4d83-9956-e3ad8fddb4bf" xlink:to="loc_din_DineEquityInc.2016StockIncentivePlanMember_415ab1f4-bfd8-46d1-9e2b-c5c9020df950" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DineequityInc2011StockIncentivePlanMember_a6ee81de-a9fd-4777-bc2b-8be6e1460ebd" xlink:href="din-20221231.xsd#din_DineequityInc2011StockIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_1695ef79-4ab9-4d83-9956-e3ad8fddb4bf" xlink:to="loc_din_DineequityInc2011StockIncentivePlanMember_a6ee81de-a9fd-4777-bc2b-8be6e1460ebd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_530191eb-0c5d-4f79-8cb0-57a0f942ac9c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_TitleOfIndividualAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_38e6e490-93fc-42c1-947c-6ebb6a2a68d0" xlink:to="loc_srt_TitleOfIndividualAxis_530191eb-0c5d-4f79-8cb0-57a0f942ac9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_530191eb-0c5d-4f79-8cb0-57a0f942ac9c_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_530191eb-0c5d-4f79-8cb0-57a0f942ac9c" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_530191eb-0c5d-4f79-8cb0-57a0f942ac9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d3a91b3d-bfc5-4964-a864-9d644e856f62" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_530191eb-0c5d-4f79-8cb0-57a0f942ac9c" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d3a91b3d-bfc5-4964-a864-9d644e856f62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_OfficersDirectorsandEmployeesMember_e47fcbd9-0c17-42f3-a57f-c81f010f2254" xlink:href="din-20221231.xsd#din_OfficersDirectorsandEmployeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d3a91b3d-bfc5-4964-a864-9d644e856f62" xlink:to="loc_din_OfficersDirectorsandEmployeesMember_e47fcbd9-0c17-42f3-a57f-c81f010f2254" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_9890c9b7-e484-4de0-9682-59491ee4d0ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_38e6e490-93fc-42c1-947c-6ebb6a2a68d0" xlink:to="loc_us-gaap_AwardTypeAxis_9890c9b7-e484-4de0-9682-59491ee4d0ed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9890c9b7-e484-4de0-9682-59491ee4d0ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_9890c9b7-e484-4de0-9682-59491ee4d0ed" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9890c9b7-e484-4de0-9682-59491ee4d0ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9f8c1eb8-83a2-4593-b98b-9ab725de8178" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_9890c9b7-e484-4de0-9682-59491ee4d0ed" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9f8c1eb8-83a2-4593-b98b-9ab725de8178" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_09d31ddb-5792-4ad2-8fe2-b476685ef0d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9f8c1eb8-83a2-4593-b98b-9ab725de8178" xlink:to="loc_us-gaap_EmployeeStockOptionMember_09d31ddb-5792-4ad2-8fe2-b476685ef0d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RestrictedStockandRestrictedStockUnitsMember_a1421da5-c145-443a-8a25-69658a950a0a" xlink:href="din-20221231.xsd#din_RestrictedStockandRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9f8c1eb8-83a2-4593-b98b-9ab725de8178" xlink:to="loc_din_RestrictedStockandRestrictedStockUnitsMember_a1421da5-c145-443a-8a25-69658a950a0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_CashsettledRestrictedStockUnitsMember_abff7301-003d-4f5b-9dd0-62ad8a107d1b" xlink:href="din-20221231.xsd#din_CashsettledRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9f8c1eb8-83a2-4593-b98b-9ab725de8178" xlink:to="loc_din_CashsettledRestrictedStockUnitsMember_abff7301-003d-4f5b-9dd0-62ad8a107d1b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_LongTermIncentivePlanMember_7d82eb3b-6a25-4035-8754-4ae02bf7af60" xlink:href="din-20221231.xsd#din_LongTermIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9f8c1eb8-83a2-4593-b98b-9ab725de8178" xlink:to="loc_din_LongTermIncentivePlanMember_7d82eb3b-6a25-4035-8754-4ae02bf7af60" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_755600fc-b406-4fbe-ad21-4711a0771f25" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_38e6e490-93fc-42c1-947c-6ebb6a2a68d0" xlink:to="loc_srt_RangeAxis_755600fc-b406-4fbe-ad21-4711a0771f25" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_755600fc-b406-4fbe-ad21-4711a0771f25_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_755600fc-b406-4fbe-ad21-4711a0771f25" xlink:to="loc_srt_RangeMember_755600fc-b406-4fbe-ad21-4711a0771f25_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_752aba78-38fb-4077-9c7a-e5b85aad105b" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_755600fc-b406-4fbe-ad21-4711a0771f25" xlink:to="loc_srt_RangeMember_752aba78-38fb-4077-9c7a-e5b85aad105b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_435867cd-d9d4-4c31-823b-87bd994b463d" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_752aba78-38fb-4077-9c7a-e5b85aad105b" xlink:to="loc_srt_MinimumMember_435867cd-d9d4-4c31-823b-87bd994b463d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_2004ce60-25f7-41ad-82b0-478ecab56218" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_752aba78-38fb-4077-9c7a-e5b85aad105b" xlink:to="loc_srt_MaximumMember_2004ce60-25f7-41ad-82b0-478ecab56218" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/StockBasedIncentivePlansEquityClassifiedAwardsStockOptionsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#StockBasedIncentivePlansEquityClassifiedAwardsStockOptionsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/StockBasedIncentivePlansEquityClassifiedAwardsStockOptionsDetails" xlink:type="extended" id="i4e8ed5870936492ab8be75cfb24e15f6_StockBasedIncentivePlansEquityClassifiedAwardsStockOptionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c8652dcb-f398-4c57-98af-0730467ff908" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_46ca429c-f529-481a-9de5-bfa0a05f863f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c8652dcb-f398-4c57-98af-0730467ff908" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_46ca429c-f529-481a-9de5-bfa0a05f863f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_9d73b0ee-8702-45ad-8a59-85d5e1884614" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c8652dcb-f398-4c57-98af-0730467ff908" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_9d73b0ee-8702-45ad-8a59-85d5e1884614" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_b434d490-24f2-4732-9e69-a5b7ed94cc4c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c8652dcb-f398-4c57-98af-0730467ff908" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_b434d490-24f2-4732-9e69-a5b7ed94cc4c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_5e0b4894-0412-4cdd-8b9a-cf87030f2f60" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c8652dcb-f398-4c57-98af-0730467ff908" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_5e0b4894-0412-4cdd-8b9a-cf87030f2f60" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ba164f7c-2db5-4747-ba27-ebd789b7e2be" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c8652dcb-f398-4c57-98af-0730467ff908" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ba164f7c-2db5-4747-ba27-ebd789b7e2be" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_361463a4-927b-47c2-80fe-df55ea23f407" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c8652dcb-f398-4c57-98af-0730467ff908" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_361463a4-927b-47c2-80fe-df55ea23f407" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_d7f94f65-8658-469e-9b56-5ab5ad3c3cb9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_361463a4-927b-47c2-80fe-df55ea23f407" xlink:to="loc_us-gaap_AwardTypeAxis_d7f94f65-8658-469e-9b56-5ab5ad3c3cb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d7f94f65-8658-469e-9b56-5ab5ad3c3cb9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_d7f94f65-8658-469e-9b56-5ab5ad3c3cb9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d7f94f65-8658-469e-9b56-5ab5ad3c3cb9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5802ce5b-eea6-4cf3-8b7a-18af2e0308c1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_d7f94f65-8658-469e-9b56-5ab5ad3c3cb9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5802ce5b-eea6-4cf3-8b7a-18af2e0308c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_bdcf9e7d-9022-4900-a01b-819f22a6cc92" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5802ce5b-eea6-4cf3-8b7a-18af2e0308c1" xlink:to="loc_us-gaap_EmployeeStockOptionMember_bdcf9e7d-9022-4900-a01b-819f22a6cc92" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/StockBasedIncentivePlansDisclosureofRestrictedStockUnitsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#StockBasedIncentivePlansDisclosureofRestrictedStockUnitsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/StockBasedIncentivePlansDisclosureofRestrictedStockUnitsDetails" xlink:type="extended" id="ic75769a7bc8340d28a41b6bba25217f3_StockBasedIncentivePlansDisclosureofRestrictedStockUnitsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7b6d428e-7288-438b-9503-1464e584db0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_61317b56-7ba8-47c7-8d34-dacb73876b4d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7b6d428e-7288-438b-9503-1464e584db0b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_61317b56-7ba8-47c7-8d34-dacb73876b4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_ec86b9a8-77fd-4867-ac31-92242b882903" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_61317b56-7ba8-47c7-8d34-dacb73876b4d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_ec86b9a8-77fd-4867-ac31-92242b882903" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_292b77e2-7ad2-44c8-b9ec-03513f855119" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_61317b56-7ba8-47c7-8d34-dacb73876b4d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_292b77e2-7ad2-44c8-b9ec-03513f855119" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_977d06ef-ffbf-4542-b86c-7e776ca585a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_61317b56-7ba8-47c7-8d34-dacb73876b4d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_977d06ef-ffbf-4542-b86c-7e776ca585a4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_add37beb-6921-4e6e-a612-04227cd67d6c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_61317b56-7ba8-47c7-8d34-dacb73876b4d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_add37beb-6921-4e6e-a612-04227cd67d6c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_aef36c12-3d35-4736-9b6a-a35083c6054d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_288cd36a-76ef-40a4-a27d-8f1df92f73c6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7b6d428e-7288-438b-9503-1464e584db0b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_288cd36a-76ef-40a4-a27d-8f1df92f73c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_ed11a1fc-e422-4e0b-8e85-13961f19a4e1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_288cd36a-76ef-40a4-a27d-8f1df92f73c6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_ed11a1fc-e422-4e0b-8e85-13961f19a4e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_b0053fef-c969-4e28-8706-4f9224d6e2fb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_288cd36a-76ef-40a4-a27d-8f1df92f73c6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_b0053fef-c969-4e28-8706-4f9224d6e2fb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_b7c77fe8-bfe5-4b97-bd80-01863bd19c9d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_288cd36a-76ef-40a4-a27d-8f1df92f73c6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_b7c77fe8-bfe5-4b97-bd80-01863bd19c9d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_8a5f916a-6e00-4e3d-bb7a-1144b202d48a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_288cd36a-76ef-40a4-a27d-8f1df92f73c6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_8a5f916a-6e00-4e3d-bb7a-1144b202d48a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_248ca625-d03e-4ab9-8317-f13f9ee11025" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_460e72b0-59f8-4354-bf31-292f4811567c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7b6d428e-7288-438b-9503-1464e584db0b" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_460e72b0-59f8-4354-bf31-292f4811567c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_f92fea6d-a4b3-4268-9906-c5d9de58900b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_460e72b0-59f8-4354-bf31-292f4811567c" xlink:to="loc_us-gaap_AwardTypeAxis_f92fea6d-a4b3-4268-9906-c5d9de58900b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f92fea6d-a4b3-4268-9906-c5d9de58900b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_f92fea6d-a4b3-4268-9906-c5d9de58900b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f92fea6d-a4b3-4268-9906-c5d9de58900b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_78fd58f8-a252-426b-83a5-25e7781d9725" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_f92fea6d-a4b3-4268-9906-c5d9de58900b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_78fd58f8-a252-426b-83a5-25e7781d9725" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_038e66bb-6582-4818-9e4a-337634aa22fc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_78fd58f8-a252-426b-83a5-25e7781d9725" xlink:to="loc_us-gaap_RestrictedStockMember_038e66bb-6582-4818-9e4a-337634aa22fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_b910d91f-9e5f-4016-b55f-cb1ba274dbbd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_78fd58f8-a252-426b-83a5-25e7781d9725" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_b910d91f-9e5f-4016-b55f-cb1ba274dbbd" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/StockBasedIncentivePlansLiabilityClassifiedAwardsCashsettledRestrictedStockUnitsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#StockBasedIncentivePlansLiabilityClassifiedAwardsCashsettledRestrictedStockUnitsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/StockBasedIncentivePlansLiabilityClassifiedAwardsCashsettledRestrictedStockUnitsDetails" xlink:type="extended" id="i9ac7dbe95be44765a72e435f01451fd4_StockBasedIncentivePlansLiabilityClassifiedAwardsCashsettledRestrictedStockUnitsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ba1b82e5-042b-4e74-9649-1e804f90d428" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_786cce49-9c02-4c1b-ae22-9d32ead240da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ba1b82e5-042b-4e74-9649-1e804f90d428" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_786cce49-9c02-4c1b-ae22-9d32ead240da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_09d93adf-3ddf-404f-a8b9-fe9190400453" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_786cce49-9c02-4c1b-ae22-9d32ead240da" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_09d93adf-3ddf-404f-a8b9-fe9190400453" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_35256905-7f2a-4019-977e-ff1398e2af8d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_786cce49-9c02-4c1b-ae22-9d32ead240da" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_35256905-7f2a-4019-977e-ff1398e2af8d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_e3538f86-9ba2-41fa-94f9-bdf16570ab27" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_786cce49-9c02-4c1b-ae22-9d32ead240da" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_e3538f86-9ba2-41fa-94f9-bdf16570ab27" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7bc69dd8-0a97-4103-ab31-40e315fc320e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_786cce49-9c02-4c1b-ae22-9d32ead240da" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7bc69dd8-0a97-4103-ab31-40e315fc320e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_eb247f3f-e1aa-45a0-b730-18cb74ec2837" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_25746aa6-3795-462e-9609-bd865e5e158d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ba1b82e5-042b-4e74-9649-1e804f90d428" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_25746aa6-3795-462e-9609-bd865e5e158d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_91c9f88e-0cc5-43a7-8e79-7de6e928d92f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_25746aa6-3795-462e-9609-bd865e5e158d" xlink:to="loc_us-gaap_AwardTypeAxis_91c9f88e-0cc5-43a7-8e79-7de6e928d92f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_91c9f88e-0cc5-43a7-8e79-7de6e928d92f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_91c9f88e-0cc5-43a7-8e79-7de6e928d92f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_91c9f88e-0cc5-43a7-8e79-7de6e928d92f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_46906971-d328-4803-8215-3bad4bdf3e0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_91c9f88e-0cc5-43a7-8e79-7de6e928d92f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_46906971-d328-4803-8215-3bad4bdf3e0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_CashsettledRestrictedStockUnitsMember_c706a32e-7aa8-4ab4-8870-2cfb0930420f" xlink:href="din-20221231.xsd#din_CashsettledRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_46906971-d328-4803-8215-3bad4bdf3e0b" xlink:to="loc_din_CashsettledRestrictedStockUnitsMember_c706a32e-7aa8-4ab4-8870-2cfb0930420f" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/EmployeeBenefitPlansDetails" xlink:type="simple" xlink:href="din-20221231.xsd#EmployeeBenefitPlansDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/EmployeeBenefitPlansDetails" xlink:type="extended" id="iec49556a3ab149309bfe3e323b82fff1_EmployeeBenefitPlansDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_d27c27ff-0e75-4a23-bc98-5ca1fbd29aef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedContributionPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_9dc46d77-c803-4b04-b206-7ea508d2d42c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_d27c27ff-0e75-4a23-bc98-5ca1fbd29aef" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_9dc46d77-c803-4b04-b206-7ea508d2d42c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_EmployeesEligibleCompensationDeferralPercent_4363851f-7c9d-4e9c-a284-24c33eafe80c" xlink:href="din-20221231.xsd#din_EmployeesEligibleCompensationDeferralPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_d27c27ff-0e75-4a23-bc98-5ca1fbd29aef" xlink:to="loc_din_EmployeesEligibleCompensationDeferralPercent_4363851f-7c9d-4e9c-a284-24c33eafe80c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized_ac993846-b799-4f31-a7c8-68d81b4b963f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedContributionPlanCostRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_d27c27ff-0e75-4a23-bc98-5ca1fbd29aef" xlink:to="loc_us-gaap_DefinedContributionPlanCostRecognized_ac993846-b799-4f31-a7c8-68d81b4b963f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanTable_1805c82e-0cdf-4d60-9696-eccb07eed7d6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedContributionPlanTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_d27c27ff-0e75-4a23-bc98-5ca1fbd29aef" xlink:to="loc_us-gaap_DefinedContributionPlanTable_1805c82e-0cdf-4d60-9696-eccb07eed7d6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DefinedContributionPensionAndOtherPostretirementPlansAxis_18183cc7-09a7-45df-8d4c-ddbac0b2cde6" xlink:href="din-20221231.xsd#din_DefinedContributionPensionAndOtherPostretirementPlansAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedContributionPlanTable_1805c82e-0cdf-4d60-9696-eccb07eed7d6" xlink:to="loc_din_DefinedContributionPensionAndOtherPostretirementPlansAxis_18183cc7-09a7-45df-8d4c-ddbac0b2cde6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DefinedContributionPensionPlanDomain_18183cc7-09a7-45df-8d4c-ddbac0b2cde6_default" xlink:href="din-20221231.xsd#din_DefinedContributionPensionPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_din_DefinedContributionPensionAndOtherPostretirementPlansAxis_18183cc7-09a7-45df-8d4c-ddbac0b2cde6" xlink:to="loc_din_DefinedContributionPensionPlanDomain_18183cc7-09a7-45df-8d4c-ddbac0b2cde6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DefinedContributionPensionPlanDomain_dc32077d-4661-4418-b3b5-5218f3891bef" xlink:href="din-20221231.xsd#din_DefinedContributionPensionPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_din_DefinedContributionPensionAndOtherPostretirementPlansAxis_18183cc7-09a7-45df-8d4c-ddbac0b2cde6" xlink:to="loc_din_DefinedContributionPensionPlanDomain_dc32077d-4661-4418-b3b5-5218f3891bef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FirstTierOfEmployeesEligibleCompensationDeferralMember_df4e3214-c2cf-47a4-bbb1-de8a1e2cbafd" xlink:href="din-20221231.xsd#din_FirstTierOfEmployeesEligibleCompensationDeferralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_DefinedContributionPensionPlanDomain_dc32077d-4661-4418-b3b5-5218f3891bef" xlink:to="loc_din_FirstTierOfEmployeesEligibleCompensationDeferralMember_df4e3214-c2cf-47a4-bbb1-de8a1e2cbafd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_SecondTierOfEmployeesEligibleCompensationDeferralMember_c5ba3b2d-adff-4228-9a77-aaac048b108d" xlink:href="din-20221231.xsd#din_SecondTierOfEmployeesEligibleCompensationDeferralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_DefinedContributionPensionPlanDomain_dc32077d-4661-4418-b3b5-5218f3891bef" xlink:to="loc_din_SecondTierOfEmployeesEligibleCompensationDeferralMember_c5ba3b2d-adff-4228-9a77-aaac048b108d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/IncomeTaxesNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#IncomeTaxesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/IncomeTaxesNarrativeDetails" xlink:type="extended" id="i9718e7a9fc824204b2e6df183ca5537d_IncomeTaxesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:href="din-20221231.xsd#din_IncomeTaxDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_bf08eea9-2bbb-46a4-a20e-05fb549722b2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_bf08eea9-2bbb-46a4-a20e-05fb549722b2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_NumberOfRestaurantsRefranchisedAndSold_8fc97982-e4d4-4dd5-b952-53e79cf0564b" xlink:href="din-20221231.xsd#din_NumberOfRestaurantsRefranchisedAndSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_din_NumberOfRestaurantsRefranchisedAndSold_8fc97982-e4d4-4dd5-b952-53e79cf0564b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_5670f7b8-9696-4009-9c61-ccad17902619" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_5670f7b8-9696-4009-9c61-ccad17902619" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsValuationAllowance_22900dcd-edc1-490b-9ed8-28d9e82b120e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLossCarryforwardsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_OperatingLossCarryforwardsValuationAllowance_22900dcd-edc1-490b-9ed8-28d9e82b120e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_7ebc2286-0cac-4239-9695-6792d29b1ca7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_7ebc2286-0cac-4239-9695-6792d29b1ca7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_e25eb44f-a390-4d31-82a3-9539127bf39b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_OperatingLossCarryforwards_e25eb44f-a390-4d31-82a3-9539127bf39b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_c4f6b11e-9282-40a2-980b-97a6dbaf0d9b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_c4f6b11e-9282-40a2-980b-97a6dbaf0d9b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_3ecf14a6-374d-42e9-8811-b47ddee5c840" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_3ecf14a6-374d-42e9-8811-b47ddee5c840" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_541a959e-f35c-496b-b7bc-a410cb5c54a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_541a959e-f35c-496b-b7bc-a410cb5c54a4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued_f0a3f9c8-c7d8-4d98-8276-83c1550ef070" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued_f0a3f9c8-c7d8-4d98-8276-83c1550ef070" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_IncomeTaxDisclosureTable_50b69264-7bf3-4f68-ac20-79ed5ac74a4c" xlink:href="din-20221231.xsd#din_IncomeTaxDisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_din_IncomeTaxDisclosureLineItems_7fb3fb15-e35c-4fcd-b478-b85c9d9f99cb" xlink:to="loc_din_IncomeTaxDisclosureTable_50b69264-7bf3-4f68-ac20-79ed5ac74a4c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureAxis_ca35f1a1-72f0-4b9d-8ccc-dc5184bff0ee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_din_IncomeTaxDisclosureTable_50b69264-7bf3-4f68-ac20-79ed5ac74a4c" xlink:to="loc_us-gaap_FranchisorDisclosureAxis_ca35f1a1-72f0-4b9d-8ccc-dc5184bff0ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_ca35f1a1-72f0-4b9d-8ccc-dc5184bff0ee_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_ca35f1a1-72f0-4b9d-8ccc-dc5184bff0ee" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_ca35f1a1-72f0-4b9d-8ccc-dc5184bff0ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorDisclosureDomain_2d8ea754-064f-4231-9a39-9a2f4153228e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorDisclosureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FranchisorDisclosureAxis_ca35f1a1-72f0-4b9d-8ccc-dc5184bff0ee" xlink:to="loc_us-gaap_FranchisorDisclosureDomain_2d8ea754-064f-4231-9a39-9a2f4153228e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityOperatedUnitsMember_54e35969-a367-44df-9401-9e2c076449e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityOperatedUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FranchisorDisclosureDomain_2d8ea754-064f-4231-9a39-9a2f4153228e" xlink:to="loc_us-gaap_EntityOperatedUnitsMember_54e35969-a367-44df-9401-9e2c076449e9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_6b8e4621-ded8-482d-876c-fba8fa4c7628" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_din_IncomeTaxDisclosureTable_50b69264-7bf3-4f68-ac20-79ed5ac74a4c" xlink:to="loc_dei_LegalEntityAxis_6b8e4621-ded8-482d-876c-fba8fa4c7628" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6b8e4621-ded8-482d-876c-fba8fa4c7628_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_6b8e4621-ded8-482d-876c-fba8fa4c7628" xlink:to="loc_dei_EntityDomain_6b8e4621-ded8-482d-876c-fba8fa4c7628_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_707c798f-ce13-4850-9741-64e2c448e0a0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_6b8e4621-ded8-482d-876c-fba8fa4c7628" xlink:to="loc_dei_EntityDomain_707c798f-ce13-4850-9741-64e2c448e0a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_ApplebeesMember_5a3cb204-2e32-4fd6-bf9d-610ac285b333" xlink:href="din-20221231.xsd#din_ApplebeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_707c798f-ce13-4850-9741-64e2c448e0a0" xlink:to="loc_din_ApplebeesMember_5a3cb204-2e32-4fd6-bf9d-610ac285b333" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/SegmentReportingDetails" xlink:type="simple" xlink:href="din-20221231.xsd#SegmentReportingDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/SegmentReportingDetails" xlink:type="extended" id="i9ebffd876b3849ea9c56afb7ef67b617_SegmentReportingDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2f430222-93db-4496-9ba4-382bc13b3890" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2f430222-93db-4496-9ba4-382bc13b3890" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RentalIncome_bf7fa0d1-8949-4f0a-a66d-c59799e166f4" xlink:href="din-20221231.xsd#din_RentalIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_din_RentalIncome_bf7fa0d1-8949-4f0a-a66d-c59799e166f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_4b0efa8a-fe0c-4a06-8951-f90fc2566f23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_Revenues_4b0efa8a-fe0c-4a06-8951-f90fc2566f23" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7ef09fb5-6eb7-4780-a41a-1c7c1e060ca1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7ef09fb5-6eb7-4780-a41a-1c7c1e060ca1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_a968e6f3-827b-41ff-9d7c-3552097ad4d6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_InterestExpense_a968e6f3-827b-41ff-9d7c-3552097ad4d6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_4296749f-bec4-4617-90a3-bc538bb10325" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_4296749f-bec4-4617-90a3-bc538bb10325" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RestructuringSettlementandImpairmentProvisionsAndGoodwillandIntangibleAssetImpairment_a223770e-fb87-4dac-809f-f73cf327ba33" xlink:href="din-20221231.xsd#din_RestructuringSettlementandImpairmentProvisionsAndGoodwillandIntangibleAssetImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_din_RestructuringSettlementandImpairmentProvisionsAndGoodwillandIntangibleAssetImpairment_a223770e-fb87-4dac-809f-f73cf327ba33" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_0dd002dd-6792-4d6f-8495-87f9c86f1df2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_0dd002dd-6792-4d6f-8495-87f9c86f1df2" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_e9f1b422-84de-4b59-a61a-926e187bd1fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_Goodwill_e9f1b422-84de-4b59-a61a-926e187bd1fd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_c1993b48-65b3-435a-bf68-5f57c2a4230e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_Assets_c1993b48-65b3-435a-bf68-5f57c2a4230e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_181a47bc-3c76-4ca0-831b-0081f809d573" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_20a187ee-45b8-450e-a8ab-c0227ede9153" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_181a47bc-3c76-4ca0-831b-0081f809d573" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_653a3302-91eb-4cfe-a5da-b2a2982a1ba5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_181a47bc-3c76-4ca0-831b-0081f809d573" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_653a3302-91eb-4cfe-a5da-b2a2982a1ba5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_653a3302-91eb-4cfe-a5da-b2a2982a1ba5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_653a3302-91eb-4cfe-a5da-b2a2982a1ba5" xlink:to="loc_us-gaap_SegmentDomain_653a3302-91eb-4cfe-a5da-b2a2982a1ba5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_7da57049-1e1e-4562-965b-aa9833aae102" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_653a3302-91eb-4cfe-a5da-b2a2982a1ba5" xlink:to="loc_us-gaap_SegmentDomain_7da57049-1e1e-4562-965b-aa9833aae102" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FranchiseOperationsMember_966f8a9a-54a8-441f-ac0b-d7c0e8291110" xlink:href="din-20221231.xsd#din_FranchiseOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_7da57049-1e1e-4562-965b-aa9833aae102" xlink:to="loc_din_FranchiseOperationsMember_966f8a9a-54a8-441f-ac0b-d7c0e8291110" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RentalOperationsMember_72f00d0e-0d3c-4035-be34-92964ba2dd8a" xlink:href="din-20221231.xsd#din_RentalOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_7da57049-1e1e-4562-965b-aa9833aae102" xlink:to="loc_din_RentalOperationsMember_72f00d0e-0d3c-4035-be34-92964ba2dd8a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_CompanyRestaurantsMember_fb1de778-74b6-4ef3-ab10-f20723488658" xlink:href="din-20221231.xsd#din_CompanyRestaurantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_7da57049-1e1e-4562-965b-aa9833aae102" xlink:to="loc_din_CompanyRestaurantsMember_fb1de778-74b6-4ef3-ab10-f20723488658" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FinancingOperationsMember_337a19c2-f3ea-4e37-9af0-c0dedb1212bf" xlink:href="din-20221231.xsd#din_FinancingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_7da57049-1e1e-4562-965b-aa9833aae102" xlink:to="loc_din_FinancingOperationsMember_337a19c2-f3ea-4e37-9af0-c0dedb1212bf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_5ee425eb-c122-4cb9-9e06-0c30afb9a478" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_181a47bc-3c76-4ca0-831b-0081f809d573" xlink:to="loc_srt_ProductOrServiceAxis_5ee425eb-c122-4cb9-9e06-0c30afb9a478" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_5ee425eb-c122-4cb9-9e06-0c30afb9a478_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_5ee425eb-c122-4cb9-9e06-0c30afb9a478" xlink:to="loc_srt_ProductsAndServicesDomain_5ee425eb-c122-4cb9-9e06-0c30afb9a478_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_9c89d82e-d1ef-4f00-8f1d-5935aa1670f4" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_5ee425eb-c122-4cb9-9e06-0c30afb9a478" xlink:to="loc_srt_ProductsAndServicesDomain_9c89d82e-d1ef-4f00-8f1d-5935aa1670f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchisorMember_86ea7257-61bd-453e-b305-0efdc8c4ed35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FranchisorMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9c89d82e-d1ef-4f00-8f1d-5935aa1670f4" xlink:to="loc_us-gaap_FranchisorMember_86ea7257-61bd-453e-b305-0efdc8c4ed35" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FoodAndBeverageMember_254b4630-413e-4d45-b5e5-05bffacfcb65" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FoodAndBeverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9c89d82e-d1ef-4f00-8f1d-5935aa1670f4" xlink:to="loc_us-gaap_FoodAndBeverageMember_254b4630-413e-4d45-b5e5-05bffacfcb65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_c48b2969-58fa-4057-8134-d803aa920d0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9c89d82e-d1ef-4f00-8f1d-5935aa1670f4" xlink:to="loc_us-gaap_FinancialServiceMember_c48b2969-58fa-4057-8134-d803aa920d0b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_5e954a85-3ac2-4f92-bd1f-560d6d938d31" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_181a47bc-3c76-4ca0-831b-0081f809d573" xlink:to="loc_srt_ConsolidationItemsAxis_5e954a85-3ac2-4f92-bd1f-560d6d938d31" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_5e954a85-3ac2-4f92-bd1f-560d6d938d31_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_5e954a85-3ac2-4f92-bd1f-560d6d938d31" xlink:to="loc_srt_ConsolidationItemsDomain_5e954a85-3ac2-4f92-bd1f-560d6d938d31_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_c758890c-1b3a-4908-ada7-c0b617d1d475" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_5e954a85-3ac2-4f92-bd1f-560d6d938d31" xlink:to="loc_srt_ConsolidationItemsDomain_c758890c-1b3a-4908-ada7-c0b617d1d475" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_50e85564-eb74-4522-b5c9-a5d0f56a44e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_c758890c-1b3a-4908-ada7-c0b617d1d475" xlink:to="loc_us-gaap_OperatingSegmentsMember_50e85564-eb74-4522-b5c9-a5d0f56a44e3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_aae68f15-bca1-401f-be13-4c89b0e3a2e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_c758890c-1b3a-4908-ada7-c0b617d1d475" xlink:to="loc_us-gaap_CorporateNonSegmentMember_aae68f15-bca1-401f-be13-4c89b0e3a2e2" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/BusinessAcquisitionNarrativeDetails" xlink:type="simple" xlink:href="din-20221231.xsd#BusinessAcquisitionNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/BusinessAcquisitionNarrativeDetails" xlink:type="extended" id="i21aa8c3c8e2043508e52f57a6092b76c_BusinessAcquisitionNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_755eec2f-2e7a-41ef-b31b-da899a80c6e0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_12b09c2d-3293-45fc-b5dd-c4ee701e3ec0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_755eec2f-2e7a-41ef-b31b-da899a80c6e0" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_12b09c2d-3293-45fc-b5dd-c4ee701e3ec0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_ca1ba586-95cc-4617-b688-f72a92b0c55c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_755eec2f-2e7a-41ef-b31b-da899a80c6e0" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_ca1ba586-95cc-4617-b688-f72a92b0c55c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_d30bd029-d419-435e-b73d-f1a54ec33d08" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_755eec2f-2e7a-41ef-b31b-da899a80c6e0" xlink:to="loc_us-gaap_Goodwill_d30bd029-d419-435e-b73d-f1a54ec33d08" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aad8a06f-b223-4b74-801a-51ebf60cea43" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_755eec2f-2e7a-41ef-b31b-da899a80c6e0" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aad8a06f-b223-4b74-801a-51ebf60cea43" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_3316e5a1-18c6-4226-bda1-74444101ce2a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aad8a06f-b223-4b74-801a-51ebf60cea43" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_3316e5a1-18c6-4226-bda1-74444101ce2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3316e5a1-18c6-4226-bda1-74444101ce2a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3316e5a1-18c6-4226-bda1-74444101ce2a" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3316e5a1-18c6-4226-bda1-74444101ce2a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d102d010-39d2-4bae-a188-c1f0253554b3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3316e5a1-18c6-4226-bda1-74444101ce2a" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d102d010-39d2-4bae-a188-c1f0253554b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FuzzysMember_19a1843d-aed6-45e1-8f4b-19ad249927f1" xlink:href="din-20221231.xsd#din_FuzzysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d102d010-39d2-4bae-a188-c1f0253554b3" xlink:to="loc_din_FuzzysMember_19a1843d-aed6-45e1-8f4b-19ad249927f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0847799e-b680-441d-9a66-a5ef384b1676" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aad8a06f-b223-4b74-801a-51ebf60cea43" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0847799e-b680-441d-9a66-a5ef384b1676" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0847799e-b680-441d-9a66-a5ef384b1676_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0847799e-b680-441d-9a66-a5ef384b1676" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0847799e-b680-441d-9a66-a5ef384b1676_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_fd2e91f6-c5b9-4fb7-b0ab-2a7a041c1e90" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0847799e-b680-441d-9a66-a5ef384b1676" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_fd2e91f6-c5b9-4fb7-b0ab-2a7a041c1e90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractBasedIntangibleAssetsMember_f78a1008-9121-4fe1-b9ca-7917514ec1d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_fd2e91f6-c5b9-4fb7-b0ab-2a7a041c1e90" xlink:to="loc_us-gaap_ContractBasedIntangibleAssetsMember_f78a1008-9121-4fe1-b9ca-7917514ec1d2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/BusinessAcquisitionNetAssetsAcquiredDetails" xlink:type="simple" xlink:href="din-20221231.xsd#BusinessAcquisitionNetAssetsAcquiredDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/BusinessAcquisitionNetAssetsAcquiredDetails" xlink:type="extended" id="ifdb7b39b36b84924ae6de871a8dc1c95_BusinessAcquisitionNetAssetsAcquiredDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivablesAndOtherCurrentAssets_7a55cf83-f35e-405c-afdc-7d1e188f81dc" xlink:href="din-20221231.xsd#din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivablesAndOtherCurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:to="loc_din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivablesAndOtherCurrentAssets_7a55cf83-f35e-405c-afdc-7d1e188f81dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyAndEquipmentAndOtherNoncurrentAssets_5ef17c7a-1502-4c51-a9f0-23a65266dc05" xlink:href="din-20221231.xsd#din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyAndEquipmentAndOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:to="loc_din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyAndEquipmentAndOtherNoncurrentAssets_5ef17c7a-1502-4c51-a9f0-23a65266dc05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_c72b3793-dc39-4260-9297-8ce99c361211" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_c72b3793-dc39-4260-9297-8ce99c361211" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangiblesOther_707a49a9-96e0-4655-8dc6-9fbe72da2739" xlink:href="din-20221231.xsd#din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangiblesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:to="loc_din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangiblesOther_707a49a9-96e0-4655-8dc6-9fbe72da2739" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_7810c556-b9e8-4c85-b345-4eb34f60b20c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:to="loc_us-gaap_Goodwill_7810c556-b9e8-4c85-b345-4eb34f60b20c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndOtherLiabilities_84f2ceb4-0abc-4c8e-b6b6-3e7eb76b26e7" xlink:href="din-20221231.xsd#din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndOtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:to="loc_din_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndOtherLiabilities_84f2ceb4-0abc-4c8e-b6b6-3e7eb76b26e7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_973eb2d5-eaf7-481f-8f21-bed8a04b5fda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_973eb2d5-eaf7-481f-8f21-bed8a04b5fda" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_c443e757-60ec-4b13-a62e-2f81ecb7e8ef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_56fdd923-d6f8-492e-b589-231e21c13a10" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_c443e757-60ec-4b13-a62e-2f81ecb7e8ef" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_9bbdfc72-512c-4dd1-ae77-27c88cb73dae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_c443e757-60ec-4b13-a62e-2f81ecb7e8ef" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_9bbdfc72-512c-4dd1-ae77-27c88cb73dae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9bbdfc72-512c-4dd1-ae77-27c88cb73dae_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_9bbdfc72-512c-4dd1-ae77-27c88cb73dae" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9bbdfc72-512c-4dd1-ae77-27c88cb73dae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_092b1888-62cd-495d-aeda-e46958c9e25c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_9bbdfc72-512c-4dd1-ae77-27c88cb73dae" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_092b1888-62cd-495d-aeda-e46958c9e25c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FuzzysMember_29d5bd2f-c9b6-49f5-9bec-28060b678345" xlink:href="din-20221231.xsd#din_FuzzysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_092b1888-62cd-495d-aeda-e46958c9e25c" xlink:to="loc_din_FuzzysMember_29d5bd2f-c9b6-49f5-9bec-28060b678345" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_44ea2cd2-f504-4641-ae37-7d7795da009e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_c443e757-60ec-4b13-a62e-2f81ecb7e8ef" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_44ea2cd2-f504-4641-ae37-7d7795da009e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44ea2cd2-f504-4641-ae37-7d7795da009e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_44ea2cd2-f504-4641-ae37-7d7795da009e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44ea2cd2-f504-4641-ae37-7d7795da009e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_840a015c-6bb2-4708-b225-7f420a539bf2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_44ea2cd2-f504-4641-ae37-7d7795da009e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_840a015c-6bb2-4708-b225-7f420a539bf2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_4900db76-2035-4c0e-af4c-c9a0ae1e7a26" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_840a015c-6bb2-4708-b225-7f420a539bf2" xlink:to="loc_us-gaap_TradeNamesMember_4900db76-2035-4c0e-af4c-c9a0ae1e7a26" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractBasedIntangibleAssetsMember_fbf16562-9196-4b36-9a4f-f17d94df476d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_840a015c-6bb2-4708-b225-7f420a539bf2" xlink:to="loc_us-gaap_ContractBasedIntangibleAssetsMember_fbf16562-9196-4b36-9a4f-f17d94df476d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.dineequity.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="din-20221231.xsd#SubsequentEventsDetails"/>
  <link:definitionLink xlink:role="http://www.dineequity.com/role/SubsequentEventsDetails" xlink:type="extended" id="i7a308d73a9d64a04a99624e6d72fb561_SubsequentEventsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_6ad2b0ce-c8ad-4bdb-84f0-865dfa66e6c4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_DebtInstrumentRepurchaseProgramMaximumAmount_3e78e0a1-4249-4883-83b6-1c4460d8d5bb" xlink:href="din-20221231.xsd#din_DebtInstrumentRepurchaseProgramMaximumAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_6ad2b0ce-c8ad-4bdb-84f0-865dfa66e6c4" xlink:to="loc_din_DebtInstrumentRepurchaseProgramMaximumAmount_3e78e0a1-4249-4883-83b6-1c4460d8d5bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_9d0f0dce-de68-462b-8ebf-1ba284eb67a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_6ad2b0ce-c8ad-4bdb-84f0-865dfa66e6c4" xlink:to="loc_us-gaap_SubsequentEventTable_9d0f0dce-de68-462b-8ebf-1ba284eb67a4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_4d2ad4f8-4c3c-4802-bcd5-5981ffe0f94c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_9d0f0dce-de68-462b-8ebf-1ba284eb67a4" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_4d2ad4f8-4c3c-4802-bcd5-5981ffe0f94c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_4d2ad4f8-4c3c-4802-bcd5-5981ffe0f94c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_4d2ad4f8-4c3c-4802-bcd5-5981ffe0f94c" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_4d2ad4f8-4c3c-4802-bcd5-5981ffe0f94c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_ccda6752-7f8a-474f-a68d-7661f8fe0f25" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_4d2ad4f8-4c3c-4802-bcd5-5981ffe0f94c" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_ccda6752-7f8a-474f-a68d-7661f8fe0f25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_5229b5a7-d2c0-45cf-a00e-edd0feb89798" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_ccda6752-7f8a-474f-a68d-7661f8fe0f25" xlink:to="loc_us-gaap_SubsequentEventMember_5229b5a7-d2c0-45cf-a00e-edd0feb89798" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-roles-2022.xsd#eedm"/>
  <link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_RentalIncome_b21c0ccc-8b49-4bc7-83e0-0cc46886882a" xlink:href="din-20221231.xsd#din_RentalIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_din_RentalIncome_b21c0ccc-8b49-4bc7-83e0-0cc46886882a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_din_FinanceLeaseandFinancingObligationsCurrent_656fad4f-dbf1-4810-b3de-6cd7d8a4a68e" xlink:href="din-20221231.xsd#din_FinanceLeaseandFinancingObligationsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:to="loc_din_FinanceLeaseandFinancingObligationsCurrent_656fad4f-dbf1-4810-b3de-6cd7d8a4a68e" xlink:type="arc" order="1"/>
  </link:definitionLink>
</link:linkbase>
