<SEC-DOCUMENT>0001140361-11-056243.txt : 20111206
<SEC-HEADER>0001140361-11-056243.hdr.sgml : 20111206
<ACCEPTANCE-DATETIME>20111206113852
ACCESSION NUMBER:		0001140361-11-056243
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20111202
FILED AS OF DATE:		20111206
DATE AS OF CHANGE:		20111206

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BARRETT JOHN F
		CENTRAL INDEX KEY:			0001184858

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-11399
		FILM NUMBER:		111245012

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CINTAS CORP
		CENTRAL INDEX KEY:			0000723254
		STANDARD INDUSTRIAL CLASSIFICATION:	MEN'S & BOYS' FURNISHINGS, WORK CLOTHING, AND ALLIED GARMENTS [2320]
		IRS NUMBER:				311188630
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			0531

	BUSINESS ADDRESS:	
		STREET 1:		6800 CINTAS BLVD
		STREET 2:		P O BOX 625737
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45262
		BUSINESS PHONE:		5134591200

	MAIL ADDRESS:	
		STREET 1:		6800 CINTAS BOULEVARD
		STREET 2:		P O BOX 625737
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45262
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
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<DESCRIPTION>FORM 3
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    <schemaVersion>X0204</schemaVersion>

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    <periodOfReport>2011-12-02</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000723254</issuerCik>
        <issuerName>CINTAS CORP</issuerName>
        <issuerTradingSymbol>CTAS</issuerTradingSymbol>
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        <reportingOwnerId>
            <rptOwnerCik>0001184858</rptOwnerCik>
            <rptOwnerName>BARRETT JOHN F</rptOwnerName>
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        <reportingOwnerAddress>
            <rptOwnerStreet1>P.O. BOX 625737</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MASON</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45040</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>300</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
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                    <value>4950</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Children</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
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    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person is a custodian for his children for these securities and disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/F. Mark Reuter as Attorney-in-Fact for John F. Barrett</signatureName>
        <signatureDate>2011-12-06</signatureDate>
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<div align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">execute for and on behalf of the undersigned, Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder.</font></div>
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<div align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact&#8217;s discretion.</font></div>
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<div style="TEXT-INDENT: 36pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">This Power of Attorney shall not supersede any power of attorney previously executed by the undersigned and shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned&#8217;s holdings of and transactions in securities, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorney-in-fact.</font></div>

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