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  <xsd:element abstract="true" id="mar_MiddleEastAndAfricaMember" name="MiddleEastAndAfricaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element id="mar_NotesReceivableWeightedAverageInterestRate" name="NotesReceivableWeightedAverageInterestRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="mar_NumberOfCustomerOwnedOrLeasedLodgingPropertiesManaged" name="NumberOfCustomerOwnedOrLeasedLodgingPropertiesManaged" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="mar_OperatingLossCarryforwardsTaxableIncomeReduction" name="OperatingLossCarryforwardsTaxableIncomeReduction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mar_OtherComprehensiveIncomeLossForeignCurrencyTranslationAndTranslationGainLossBeforeReclassificationAndTaxIntraEntityForeignCurrencyTransactionsLongTermInvestmentNature" name="OtherComprehensiveIncomeLossForeignCurrencyTranslationAndTranslationGainLossBeforeReclassificationAndTaxIntraEntityForeignCurrencyTransactionsLongTermInvestmentNature" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_OtherInternationalSegmentsMember" name="OtherInternationalSegmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_OtherLocationsMember" name="OtherLocationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_OtherLongtermDebtMember" name="OtherLongtermDebtMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_OtherPlanAssetsMember" name="OtherPlanAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_OwnedLeasedandOtherMember" name="OwnedLeasedandOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_PaymentsForLoanAdvances" name="PaymentsForLoanAdvances" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_PerformanceBasedRestrictedStockUnitsRSUsMember" name="PerformanceBasedRestrictedStockUnitsRSUsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_ProceedsFromRepaymentsOfCommercialPaperAndLongTermLinesOfCredit" name="ProceedsFromRepaymentsOfCommercialPaperAndLongTermLinesOfCredit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mar_ProfitSharingPlanPolicyTextBlock" name="ProfitSharingPlanPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_PurchaseObligationDueAftertheThirdYear" name="PurchaseObligationDueAftertheThirdYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mar_PutativeClassActionLawsuitsRelatedtoDataSecurityIncidentMember" name="PutativeClassActionLawsuitsRelatedtoDataSecurityIncidentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_ReconciliationOfCapitalizedExpendituresfromSegmenttoConsolidatedTableTextBlock" name="ReconciliationOfCapitalizedExpendituresfromSegmenttoConsolidatedTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_ReconciliationOfDepreciationandAmortizationfromSegmentstoConsolidatedTableTextBlock" name="ReconciliationOfDepreciationandAmortizationfromSegmentstoConsolidatedTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_ReimbursedCostsMember" name="ReimbursedCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_ReimbursementsMember" name="ReimbursementsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_RelationshipWithMajorCustomerDisclosureAbstract" name="RelationshipWithMajorCustomerDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_RelationshipWithMajorCustomerTextBlock" name="RelationshipWithMajorCustomerTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_RevenuesGrossofCapitalizedContractCostAmortization" name="RevenuesGrossofCapitalizedContractCostAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_RightOrObligationToInvestAxis" name="RightOrObligationToInvestAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_RightOrObligationToInvestDomain" name="RightOrObligationToInvestDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_RitzCarltonTorontoMember" name="RitzCarltonTorontoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_ScheduleOfAdditionalInformationOnRestrictedStockUnitsTableTextBlock" name="ScheduleOfAdditionalInformationOnRestrictedStockUnitsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_SelfInsurancePolicyTextBlock" name="SelfInsurancePolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_SelfInsuranceProjectedSettlementDiscountRate" name="SelfInsuranceProjectedSettlementDiscountRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="mar_SelfInsuranceReserveForLossAndLossAdjustmentExpenseTextBlock" name="SelfInsuranceReserveForLossAndLossAdjustmentExpenseTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_SelfInsuranceReserveForLossesAndLossAdjustmentExpensesDisclosureAbstract" name="SelfInsuranceReserveForLossesAndLossAdjustmentExpensesDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_SelfInsuranceReserveForLossesAndLossAdjustmentExpensesRollForward" name="SelfInsuranceReserveForLossesAndLossAdjustmentExpensesRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_SeriesAANotesMember" name="SeriesAANotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_SeriesKSeniorNotesMember" name="SeriesKSeniorNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="mar_SeriesMSeniorNotesMember" name="SeriesMSeniorNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_SeriesNSeniorNotesMember" name="SeriesNSeniorNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="mar_SeriesZNotesMember" name="SeriesZNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedAndDistributedIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedAndDistributedIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mar_ShareBasedCompensationTaxBenefitFromCompensationExpenseOrRealizedFromExerciseOfStockOptions" name="ShareBasedCompensationTaxBenefitFromCompensationExpenseOrRealizedFromExerciseOfStockOptions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mar_SharebasedCompensationNonvestedAwardsCompensationCostNotyetRecognized" name="SharebasedCompensationNonvestedAwardsCompensationCostNotyetRecognized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mar_SheratonGrandChicagoHotelMember" name="SheratonGrandChicagoHotelMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_SheratonGrandPhoenixMember" name="SheratonGrandPhoenixMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_SignificantAccountingPoliciesLineItems" name="SignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_StartUpSpecializinginEvaluationofTravelandRealEstateRelatedEmergingTechnologyCompaniesMember" name="StartUpSpecializinginEvaluationofTravelandRealEstateRelatedEmergingTechnologyCompaniesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mar_StarwoodHotelsResortsWorldwideInc.Member" name="StarwoodHotelsResortsWorldwideInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_SuretyBonds" name="SuretyBonds" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mar_SwissFederalTaxAdministrationInlandRevenueAuthorityofSingaporeandLuxembourgInlandRevenueMember" name="SwissFederalTaxAdministrationInlandRevenueAuthorityofSingaporeandLuxembourgInlandRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mar_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxProvisionalIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mar_TaxCutsandJobsActIncomeTaxExpenseBenefit" name="TaxCutsandJobsActIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mar_TaxCutsandJobsActIncompleteAccountingChangeinTaxRateProvisionalIncomeTaxExpenseBenefit" name="TaxCutsandJobsActIncompleteAccountingChangeinTaxRateProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mar_TaxCutsandJobsActTransitionTaxIncomeTaxExpenseBenefit" name="TaxCutsandJobsActTransitionTaxIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mar_TaxCutsandJobsActTransitionTaxIncomeTaxExpenseBenefitAuditAdjustment" name="TaxCutsandJobsActTransitionTaxIncomeTaxExpenseBenefitAuditAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mar_ValuationOfIntangiblesAndLongLivedAssetsPolicyTextBlock" name="ValuationOfIntangiblesAndLongLivedAssetsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
</xsd:schema>





