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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001140361-08-023297.txt : 20081015
<SEC-HEADER>0001140361-08-023297.hdr.sgml : 20081015
<ACCEPTANCE-DATETIME>20081015163356
ACCESSION NUMBER:		0001140361-08-023297
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20081014
FILED AS OF DATE:		20081015
DATE AS OF CHANGE:		20081015

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DIRVIN GERALD V
		CENTRAL INDEX KEY:			0001192930

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-11399
		FILM NUMBER:		081125297

	MAIL ADDRESS:	
		STREET 1:		PO BOSX 625737
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45262
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-10-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000723254</issuerCik>
        <issuerName>CINTAS CORP</issuerName>
        <issuerTradingSymbol>CTAS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001192930</rptOwnerCik>
            <rptOwnerName>DIRVIN GERALD V</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>108 PLANTATION CIRCLE SOUTH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PONTE VEDRA BEACH</rptOwnerCity>
            <rptOwnerState>X1</rptOwnerState>
            <rptOwnerZipCode>32082</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-10-14</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1753</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>27495</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>22.42</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-10-14</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4145</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2018-10-14</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4145</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4145</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Restricted shares granted pursuant to Cintas Corporation's 2005 Equity Compensation Plan.</footnote>
        <footnote id="F2">Option granted pursuant to Cintas Corporation's 2005 Equity Compensation Plan.  Twenty-five percent of the options are exercisable on 10/14/2009 and twenty-five percent each year thereafter until a full vest date on 10/14/2012.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Mark A. Weiss as Attorney-in-Fact for Gerald V. Dirvin</signatureName>
        <signatureDate>2008-10-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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