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  <xs:element id="mar_DeferredTaxAssetsTaxCreditCarryforwardsNotSubjectToExpiration" abstract="false" name="DeferredTaxAssetsTaxCreditCarryforwardsNotSubjectToExpiration" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_OperatingLossCarryforwardsTaxableIncomeReduction" abstract="false" name="OperatingLossCarryforwardsTaxableIncomeReduction" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_DeferredTaxAssetsCustomerLoyaltyProgramLiability" abstract="false" name="DeferredTaxAssetsCustomerLoyaltyProgramLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_DeferredTaxAssetsLeasingArrangements" abstract="false" name="DeferredTaxAssetsLeasingArrangements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_EffectiveIncomeTaxRateReconciliationIntellectualPropertyRestructuringPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationIntellectualPropertyRestructuringPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mar_CommitmentsAndContingenciesDisclosureTable" abstract="true" name="CommitmentsAndContingenciesDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="mar_LossContingenciesBySecondaryNatureOfContingencyAxis" abstract="true" name="LossContingenciesBySecondaryNatureOfContingencyAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="mar_LossContingenciesBySecondaryNatureOfContingencyDomain" abstract="true" name="LossContingenciesBySecondaryNatureOfContingencyDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_NotYetInEffectConditionMember" abstract="true" name="NotYetInEffectConditionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_GuaranteeOperatingProfitMember" abstract="true" name="GuaranteeOperatingProfitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_ClassActionLawsuitsRelatedToDataSecurityIncidentMember" abstract="true" name="ClassActionLawsuitsRelatedToDataSecurityIncidentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_CommitmentsAndContingenciesDisclosureLineItems" abstract="true" name="CommitmentsAndContingenciesDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mar_GuaranteeObligationTerm" abstract="false" name="GuaranteeObligationTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mar_SuretyBonds" abstract="false" name="SuretyBonds" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_LesseeOperatingAndFinanceLeaseTermOfContract" abstract="false" name="LesseeOperatingAndFinanceLeaseTermOfContract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mar_LesseeOperatingAndFinanceLeaseNumberOfOptionsForRenewal" abstract="false" name="LesseeOperatingAndFinanceLeaseNumberOfOptionsForRenewal" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mar_LesseeOperatingAndFinanceLeaseRenewalTerm" abstract="false" name="LesseeOperatingAndFinanceLeaseRenewalTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mar_LeaseWeightedAverageRemainingLeaseTermAbstract" abstract="true" name="LeaseWeightedAverageRemainingLeaseTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mar_LeaseWeightedAverageDiscountRatePercentAbstract" abstract="true" name="LeaseWeightedAverageDiscountRatePercentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mar_SeriesPSeniorNotesMember" abstract="true" name="SeriesPSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesRNotesMember" abstract="true" name="SeriesRNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesVNotesMember" abstract="true" name="SeriesVNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesWNotesMember" abstract="true" name="SeriesWNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesXNotesMember" abstract="true" name="SeriesXNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesAANotesMember" abstract="true" name="SeriesAANotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesEENotesMember" abstract="true" name="SeriesEENotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesFFNotesMember" abstract="true" name="SeriesFFNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesGGNotesMember" abstract="true" name="SeriesGGNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesHHNotesMember" abstract="true" name="SeriesHHNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesIINotesMember" abstract="true" name="SeriesIINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesJJNotesMember" abstract="true" name="SeriesJJNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesKKNotesMember" abstract="true" name="SeriesKKNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesLLNotesMember" abstract="true" name="SeriesLLNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesMMNotesMember" abstract="true" name="SeriesMMNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesNNNotesMember" abstract="true" name="SeriesNNNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesOONotesMember" abstract="true" name="SeriesOONotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesPPNotesMember" abstract="true" name="SeriesPPNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesQQNotesMember" abstract="true" name="SeriesQQNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesRRNotesMember" abstract="true" name="SeriesRRNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesSSNotesMember" abstract="true" name="SeriesSSNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesTTNotesMember" abstract="true" name="SeriesTTNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesUUNotesMember" abstract="true" name="SeriesUUNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesVVNotesMember" abstract="true" name="SeriesVVNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="mar_SeriesRRAndSSNotesMember" abstract="true" name="SeriesRRAndSSNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_CostsIncurredtoObtainContractsMember" abstract="true" name="CostsIncurredtoObtainContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_AcquiredContractsAndOtherMember" abstract="true" name="AcquiredContractsAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_ReimbursedExpensesMember" abstract="true" name="ReimbursedExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_USAndCanadaSegmentMember" abstract="true" name="USAndCanadaSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_EMEASegmentMember" abstract="true" name="EMEASegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_GreaterChinaMember" abstract="true" name="GreaterChinaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_APECMember" abstract="true" name="APECMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_CaribbeanAndLatinAmericaSegmentMember" abstract="true" name="CaribbeanAndLatinAmericaSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_BuildingAndLeaseholdImprovementsMember" abstract="true" name="BuildingAndLeaseholdImprovementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_ReimbursedCostsMember" abstract="true" name="ReimbursedCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_FinancialInstrumentsAssetsNoncurrent" abstract="false" name="FinancialInstrumentsAssetsNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_FinancialInstrumentsLiabilitiesNoncurrent" abstract="false" name="FinancialInstrumentsLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_AccumulatedGainLossOtherAdjustmentsAttributableToParentMember" abstract="true" name="AccumulatedGainLossOtherAdjustmentsAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_OtherComprehensiveIncomeLossForeignCurrencyTranslationAndTranslationGainLossBeforeReclassificationAndTaxIntraEntityForeignCurrencyTransactionsLongTermInvestmentNature" abstract="false" name="OtherComprehensiveIncomeLossForeignCurrencyTranslationAndTranslationGainLossBeforeReclassificationAndTaxIntraEntityForeignCurrencyTransactionsLongTermInvestmentNature" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_IncomeLossBeforeInterestExpenseAndTaxes" abstract="false" name="IncomeLossBeforeInterestExpenseAndTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
