<SEC-DOCUMENT>0001206264-20-000050.txt : 20200203
<SEC-HEADER>0001206264-20-000050.hdr.sgml : 20200203
<ACCEPTANCE-DATETIME>20200203160400
ACCESSION NUMBER:		0001206264-20-000050
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200101
FILED AS OF DATE:		20200203
DATE AS OF CHANGE:		20200203

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MURRAY THOMAS A.
		CENTRAL INDEX KEY:			0001526385

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31922
		FILM NUMBER:		20568650

	MAIL ADDRESS:	
		STREET 1:		C/O CARBONITE, INC.
		STREET 2:		177 HUNTINGTON AVENUE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02115

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TEMPUR SEALY INTERNATIONAL, INC.
		CENTRAL INDEX KEY:			0001206264
		STANDARD INDUSTRIAL CLASSIFICATION:	HOUSEHOLD FURNITURE [2510]
		IRS NUMBER:				331022198
		STATE OF INCORPORATION:			KY
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1000 TEMPUR WAY
		CITY:			LEXINGTON
		STATE:			KY
		ZIP:			40511
		BUSINESS PHONE:		800-878-8889

	MAIL ADDRESS:	
		STREET 1:		1000 TEMPUR WAY
		CITY:			LEXINGTON
		STATE:			KY
		ZIP:			40511

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TEMPUR PEDIC INTERNATIONAL INC
		DATE OF NAME CHANGE:	20031202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TWI HOLDINGS INC
		DATE OF NAME CHANGE:	20021119
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>wf-form3a_158076382317189.xml
<DESCRIPTION>FORM 3/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2020-01-01</periodOfReport>

    <dateOfOriginalSubmission>2020-01-06</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001206264</issuerCik>
        <issuerName>TEMPUR SEALY INTERNATIONAL, INC.</issuerName>
        <issuerTradingSymbol>TPX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001526385</rptOwnerCik>
            <rptOwnerName>MURRAY THOMAS A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TEMPUR SEALY INTERNATIONAL, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1000 TEMPUR WAY</rptOwnerStreet2>
            <rptOwnerCity>LEXINGTON</rptOwnerCity>
            <rptOwnerState>KY</rptOwnerState>
            <rptOwnerZipCode>40511</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, CMO U.S.</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.0</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5094.0</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On May 7, 2018, the reporting person was granted 6,793 restricted stock units (&quot;RSUs&quot;). Pursuant to the award agreement, one installment of 1,669 RSUs vested and was distributed to the reporting person on May 7, 2019. The second, third and fourth installments of 1,698 RSUs each will vest on May 7, 2020, May 7, 2021 and May 7, 2022, respectively.</footnote>
        <footnote id="F2">The number of restricted stock units for this award was incorrectly stated in the reporting persons' original Form 3.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Bhaskar Rao</signatureName>
        <signatureDate>2020-02-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
