<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with WebFilings-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.cintas.com/20121130" xmlns:ctas="http://www.cintas.com/20121130" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-roles-2011-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-types-2011-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2011-01-31" schemaLocation="http://xbrl.sec.gov/country/2011/country-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2011-01-31" schemaLocation="http://xbrl.sec.gov/currency/2011/currency-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2011-01-31" schemaLocation="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2011-01-31" schemaLocation="http://xbrl.sec.gov/exch/2011/exch-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2011-01-31" schemaLocation="http://xbrl.sec.gov/invest/2011/invest-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ctas-20121130_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ctas-20121130_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ctas-20121130_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ctas-20121130_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="BasisOfPresentation" roleURI="http://www.cintas.com/role/BasisOfPresentation">
        <link:definition>2101100 - Disclosure - Basis of Presentation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisOfPresentationDetails" roleURI="http://www.cintas.com/role/BasisOfPresentationDetails">
        <link:definition>2401402 - Disclosure - Basis of Presentation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisOfPresentationTables" roleURI="http://www.cintas.com/role/BasisOfPresentationTables">
        <link:definition>2301301 - Disclosure - Basis of Presentation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedCondensedBalanceSheetsUnaudited" roleURI="http://www.cintas.com/role/ConsolidatedCondensedBalanceSheetsUnaudited">
        <link:definition>1003000 - Statement - Consolidated Condensed Balance Sheets (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedCondensedBalanceSheetsUnauditedParenthetical" roleURI="http://www.cintas.com/role/ConsolidatedCondensedBalanceSheetsUnauditedParenthetical">
        <link:definition>1003501 - Statement - Consolidated Condensed Balance Sheets (Unaudited) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedCondensedStatementsOfCashFlowsUnaudited" roleURI="http://www.cintas.com/role/ConsolidatedCondensedStatementsOfCashFlowsUnaudited">
        <link:definition>1004000 - Statement - Consolidated Condensed Statements of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedCondensedStatementsOfComprehensiveIncomeUnaudited" roleURI="http://www.cintas.com/role/ConsolidatedCondensedStatementsOfComprehensiveIncomeUnaudited">
        <link:definition>1002000 - Statement - Consolidated Condensed Statements of Comprehensive Income (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedCondensedStatementsOfComprehensiveIncomeUnauditedParenthetical" roleURI="http://www.cintas.com/role/ConsolidatedCondensedStatementsOfComprehensiveIncomeUnauditedParenthetical">
        <link:definition>1002501 - Statement - Consolidated Condensed Statements of Comprehensive Income (Unaudited) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedCondensedStatementsOfIncomeUnaudited" roleURI="http://www.cintas.com/role/ConsolidatedCondensedStatementsOfIncomeUnaudited">
        <link:definition>1001000 - Statement - Consolidated Condensed Statements of Income (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtDerivativesAndHedgingActivities" roleURI="http://www.cintas.com/role/DebtDerivativesAndHedgingActivities">
        <link:definition>2105100 - Disclosure - Debt, Derivatives and Hedging Activities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://www.cintas.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShare" roleURI="http://www.cintas.com/role/EarningsPerShare">
        <link:definition>2103100 - Disclosure - Earnings per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareDetails" roleURI="http://www.cintas.com/role/EarningsPerShareDetails">
        <link:definition>2403402 - Disclosure - Earnings per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareDetails2" roleURI="http://www.cintas.com/role/EarningsPerShareDetails2">
        <link:definition>2403403 - Disclosure - Earnings per Share (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareTables" roleURI="http://www.cintas.com/role/EarningsPerShareTables">
        <link:definition>2303301 - Disclosure - Earnings per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.cintas.com/role/FairValueMeasurements">
        <link:definition>2102100 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsDetails" roleURI="http://www.cintas.com/role/FairValueMeasurementsDetails">
        <link:definition>2402402 - Disclosure - Fair Value Measurements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsDetails2" roleURI="http://www.cintas.com/role/FairValueMeasurementsDetails2">
        <link:definition>2402403 - Disclosure - Fair Value Measurements (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.cintas.com/role/FairValueMeasurementsTables">
        <link:definition>2302301 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillServiceContractsAndOtherAssets" roleURI="http://www.cintas.com/role/GoodwillServiceContractsAndOtherAssets">
        <link:definition>2104100 - Disclosure - Goodwill, Service Contracts and Other Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillServiceContractsAndOtherAssetsDetails" roleURI="http://www.cintas.com/role/GoodwillServiceContractsAndOtherAssetsDetails">
        <link:definition>2404403 - Disclosure - Goodwill, Service Contracts and Other Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillServiceContractsAndOtherAssetsDetails2" roleURI="http://www.cintas.com/role/GoodwillServiceContractsAndOtherAssetsDetails2">
        <link:definition>2404404 - Disclosure - Goodwill, Service Contracts and Other Assets (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillServiceContractsAndOtherAssetsDetails3" roleURI="http://www.cintas.com/role/GoodwillServiceContractsAndOtherAssetsDetails3">
        <link:definition>2404405 - Disclosure - Goodwill, Service Contracts and Other Assets (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillServiceContractsAndOtherAssetsNarrativeDetails" roleURI="http://www.cintas.com/role/GoodwillServiceContractsAndOtherAssetsNarrativeDetails">
        <link:definition>2404402 - Disclosure - Goodwill, Service Contracts and Other Assets Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillServiceContractsAndOtherAssetsTables" roleURI="http://www.cintas.com/role/GoodwillServiceContractsAndOtherAssetsTables">
        <link:definition>2304301 - Disclosure - Goodwill, Service Contracts and Other Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.cintas.com/role/IncomeTaxes">
        <link:definition>2106100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDetails" roleURI="http://www.cintas.com/role/IncomeTaxesDetails">
        <link:definition>2406401 - Disclosure - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LitigationAndOtherContingencies" roleURI="http://www.cintas.com/role/LitigationAndOtherContingencies">
        <link:definition>2107100 - Disclosure - Litigation and Other Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LitigationAndOtherContingenciesDetails" roleURI="http://www.cintas.com/role/LitigationAndOtherContingenciesDetails">
        <link:definition>2407401 - Disclosure - Litigation and Other Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndDerivativesDetails" roleURI="http://www.cintas.com/role/LongTermDebtAndDerivativesDetails">
        <link:definition>2405401 - Disclosure - Long-Term Debt and Derivatives (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://www.cintas.com/role/SegmentInformation">
        <link:definition>2108100 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationDetails" roleURI="http://www.cintas.com/role/SegmentInformationDetails">
        <link:definition>2408402 - Disclosure - Segment Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationTables" roleURI="http://www.cintas.com/role/SegmentInformationTables">
        <link:definition>2308301 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalGuarantorInformation" roleURI="http://www.cintas.com/role/SupplementalGuarantorInformation">
        <link:definition>2109100 - Disclosure - Supplemental Guarantor Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalGuarantorInformationDetails" roleURI="http://www.cintas.com/role/SupplementalGuarantorInformationDetails">
        <link:definition>2409403 - Disclosure - Supplemental Guarantor Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalGuarantorInformationDetails1" roleURI="http://www.cintas.com/role/SupplementalGuarantorInformationDetails1">
        <link:definition>2409404 - Disclosure - Supplemental Guarantor Information (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalGuarantorInformationDetails2" roleURI="http://www.cintas.com/role/SupplementalGuarantorInformationDetails2">
        <link:definition>2409405 - Disclosure - Supplemental Guarantor Information (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalGuarantorInformationDetails3" roleURI="http://www.cintas.com/role/SupplementalGuarantorInformationDetails3">
        <link:definition>2409406 - Disclosure - Supplemental Guarantor Information (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalGuarantorInformationNarrativeDetails" roleURI="http://www.cintas.com/role/SupplementalGuarantorInformationNarrativeDetails">
        <link:definition>2409402 - Disclosure - Supplemental Guarantor Information Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalGuarantorInformationTables" roleURI="http://www.cintas.com/role/SupplementalGuarantorInformationTables">
        <link:definition>2309301 - Disclosure - Supplemental Guarantor Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="ctas_AccumulatedAmortizationOfOtherAssets" name="AccumulatedAmortizationOfOtherAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ctas_CanadianTreasurySecuritiesMember" name="CanadianTreasurySecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_CommercialPaperMaximumBorrowingCapacity" name="CommercialPaperMaximumBorrowingCapacity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ctas_CostOfOtherServices" name="CostOfOtherServices" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ctas_CostOfRentalUniformsAndAncillaryProducts" name="CostOfRentalUniformsAndAncillaryProducts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_DebtDerivativesAndHedgingActivitiesAbstract" name="DebtDerivativesAndHedgingActivitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_DebtDerivativesInstrumentsAndHedgingActivitiesDisclosureTextBlock" name="DebtDerivativesInstrumentsAndHedgingActivitiesDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_DocumentManagementMember" name="DocumentManagementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_EarningsPerShareBasicAndDilutedLineItems" name="EarningsPerShareBasicAndDilutedLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_EarningsPerShareByStockAxis" name="EarningsPerShareByStockAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_EarningsPerShareByStockDomain" name="EarningsPerShareByStockDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_EmployeePayrollTaxesDueOnRestrictedStockMember" name="EmployeePayrollTaxesDueOnRestrictedStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_FiniteLivedIntangibleAssetsAmortization" name="FiniteLivedIntangibleAssetsAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_FiniteLivedIntangibleAssetsNetRollForward" name="FiniteLivedIntangibleAssetsNetRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_FiniteLivedIntangibleAssetsTranslationAdjustments" name="FiniteLivedIntangibleAssetsTranslationAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_FirstAidSafetyAndFireProtectionMember" name="FirstAidSafetyAndFireProtectionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_GoodwillServiceContractsAndOtherAssetsAbstract" name="GoodwillServiceContractsAndOtherAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_GoodwillServiceContractsAndOtherAssetsDisclosureTextBlock" name="GoodwillServiceContractsAndOtherAssetsDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_IncreaseDecreaseInUniformsAndOtherRentalItemsInService" name="IncreaseDecreaseInUniformsAndOtherRentalItemsInService" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_LessThanMember" name="LessThanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_LossContingencyNumberOfPlaintiffs" name="LossContingencyNumberOfPlaintiffs" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_NetIncomeLossAvailableToCommonStockholdersBasicAfterAdjustmentOfUndistributedEarningsAllocatedToParticipatingSecurities" name="NetIncomeLossAvailableToCommonStockholdersBasicAfterAdjustmentOfUndistributedEarningsAllocatedToParticipatingSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_NonvestedStockMember" name="NonvestedStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_NotesDue2012Member" name="NotesDue2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_NotesDue2022Member" name="NotesDue2022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_NumberOfOperatingSegments" name="NumberOfOperatingSegments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_OtherAssetsAxis" name="OtherAssetsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_OtherAssetsDomain" name="OtherAssetsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_OtherAssetsGross" name="OtherAssetsGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ctas_OtherAssetsLineItems" name="OtherAssetsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_OtherComprehensiveIncomeIncreaseFromAmortizationOfInterestRateCashFlowHedge" name="OtherComprehensiveIncomeIncreaseFromAmortizationOfInterestRateCashFlowHedge" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ctas_OtherComprehensiveIncomeLossAmortizationOfInterestRateLockAgreementsPeriodDecreaseIncrease" name="OtherComprehensiveIncomeLossAmortizationOfInterestRateLockAgreementsPeriodDecreaseIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_OtherMiscellaneousAssetsMember" name="OtherMiscellaneousAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_RentalUniformsAndAncillaryProductsMember" name="RentalUniformsAndAncillaryProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_RevenueOtherServices" name="RevenueOtherServices" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ctas_RevenueRentalUniformsAndAncillaryProducts" name="RevenueRentalUniformsAndAncillaryProducts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ctas_ScheduleOfCondensedConsolidatingBalanceSheetsTableTextBlock" name="ScheduleOfCondensedConsolidatingBalanceSheetsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_ScheduleOfCondensedConsolidatingIncomeStatementsTableTextBlock" name="ScheduleOfCondensedConsolidatingIncomeStatementsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_ScheduleOfCondensedConsolidatingStatementOfComprehensiveIncomeTableTextBlock" name="ScheduleOfCondensedConsolidatingStatementOfComprehensiveIncomeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_ScheduleOfCondensedConsolidatingStatementsOfCashFlowsTableTextBlock" name="ScheduleOfCondensedConsolidatingStatementsOfCashFlowsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_ScheduleOfEarningsPerShareBasicAndDilutedByStockClassTable" name="ScheduleOfEarningsPerShareBasicAndDilutedByStockClassTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_ScheduleOfFiniteLivedIntangibleAssetsAndOtherAssetsByMajorClassTableTextBlock" name="ScheduleOfFiniteLivedIntangibleAssetsAndOtherAssetsByMajorClassTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_ScheduleOfOtherAssetsTable" name="ScheduleOfOtherAssetsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_ScheduleOfServiceContractsFiniteLivedIntangibleAssetsByOperatingSegmentTableTextBlock" name="ScheduleOfServiceContractsFiniteLivedIntangibleAssetsByOperatingSegmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_SerranoPurportedClassActionLawsuitMember" name="SerranoPurportedClassActionLawsuitMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_ServiceContractsFiniteLivedIntangibleAssetsNet" name="ServiceContractsFiniteLivedIntangibleAssetsNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ctas_StatementOfOtherComprehensiveIncomeAbstract" name="StatementOfOtherComprehensiveIncomeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_StockRepurchaseProgramNewAuthorizedAmount" name="StockRepurchaseProgramNewAuthorizedAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ctas_StockRepurchasedDuringPeriodAveragePrice" name="StockRepurchasedDuringPeriodAveragePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ctas_UniformDirectSalesMember" name="UniformDirectSalesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ctas_UniformsAndOtherRentalItemsInService" name="UniformsAndOtherRentalItemsInService" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
</xsd:schema>
