<SEC-DOCUMENT>0001136893-21-000079.txt : 20210331
<SEC-HEADER>0001136893-21-000079.hdr.sgml : 20210331
<ACCEPTANCE-DATETIME>20210331165954
ACCESSION NUMBER:		0001136893-21-000079
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210329
FILED AS OF DATE:		20210331
DATE AS OF CHANGE:		20210331

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Thompson Christopher A
		CENTRAL INDEX KEY:			0001615364

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16427
		FILM NUMBER:		21794297

	MAIL ADDRESS:	
		STREET 1:		C/O VANTIV, INC.
		STREET 2:		8500 GOVERNORS HILL DRIVE
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45249

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Fidelity National Information Services, Inc.
		CENTRAL INDEX KEY:			0001136893
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				371490331
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		601 RIVERSIDE AVENUE
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32204
		BUSINESS PHONE:		904-438-6365

	MAIL ADDRESS:	
		STREET 1:		601 RIVERSIDE AVENUE
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32204

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CERTEGY INC
		DATE OF NAME CHANGE:	20010607

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EQUIFAX PS INC
		DATE OF NAME CHANGE:	20010315
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_161722436744128.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <periodOfReport>2021-03-29</periodOfReport>

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    <issuer>
        <issuerCik>0001136893</issuerCik>
        <issuerName>Fidelity National Information Services, Inc.</issuerName>
        <issuerTradingSymbol>FIS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001615364</rptOwnerCik>
            <rptOwnerName>Thompson Christopher A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 RIVERSIDE AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>JACKSONVILLE</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>32204</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Accounting Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
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                    <value>277</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
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                <value>2021-03-29</value>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>277.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>556</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On March 29, 2020, the reporting person was granted performance restricted stock units (&quot;PSUs&quot;) that vest in three equal installments contingent on FIS's satisfaction of certain performance criteria for each of the calendar years ending December 31, 2020, 20210 and 2022. The PSUs vest between 0% and 150% of the target grant amount in each year. The Compensation Committee of FIS determined the performance criteria for 2020 had been met, resulting in an award of 92.6% of the target grant amount.</footnote>
        <footnote id="F2">Represents shares to satisfy withholding tax obligation for PSU vesting.</footnote>
        <footnote id="F3">Represents shares to satisfy withholding tax obligation for Restricted Stock Unit vesting.</footnote>
        <footnote id="F4">Each restricted stock unit represents a contingent right to receive one share of FIS common stock.</footnote>
        <footnote id="F5">The restricted stock units vest and distribute in three equal annual installments on each anniversary date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Charles H. Keller, attorney-in-fact for Christopher Thompson</signatureName>
        <signatureDate>2021-03-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
