<SEC-DOCUMENT>0001209191-14-066024.txt : 20141104
<SEC-HEADER>0001209191-14-066024.hdr.sgml : 20141104
<ACCEPTANCE-DATETIME>20141104104456
ACCESSION NUMBER:		0001209191-14-066024
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20141103
FILED AS OF DATE:		20141104
DATE AS OF CHANGE:		20141104

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CULLEN/FROST BANKERS, INC.
		CENTRAL INDEX KEY:			0000039263
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				741751768
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 W HOUSTON ST
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78205
		BUSINESS PHONE:		210-220-4011

	MAIL ADDRESS:	
		STREET 1:		POST OFFICE BOX 1600
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78296-1600

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CULLEN FROST BANKERS INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FROST BANK CORP
		DATE OF NAME CHANGE:	19770823

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ALEXANDER R DENNY
		CENTRAL INDEX KEY:			0001128390

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13221
		FILM NUMBER:		141191841

	MAIL ADDRESS:	
		STREET 1:		100 WEST HOUSTON ST
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78205
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2014-11-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000039263</issuerCik>
        <issuerName>CULLEN/FROST BANKERS, INC.</issuerName>
        <issuerTradingSymbol>CFR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001128390</rptOwnerCik>
            <rptOwnerName>ALEXANDER R DENNY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4200 S. HULEN STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 617</rptOwnerStreet2>
            <rptOwnerCity>FORT WORTH</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>76109</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $0.01 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2014-11-03</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>81.00</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>29050</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Through Limited Partnership</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price in Column 4 is based on a weighted average price.  The prices actually paid range from $81.00 to $81.03.  The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.</footnote>
        <footnote id="F2">Shares held by Alton Road Partners, L.P. (the &quot;Partnership&quot;) of which the reporting person is a general partner.  The reporting person disclaims beneficial ownership of the Common Stock held by the Partnership, except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ R. Denny Alexander</signatureName>
        <signatureDate>2014-11-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
