<SEC-DOCUMENT>0001759710-25-000005.txt : 20251110
<SEC-HEADER>0001759710-25-000005.hdr.sgml : 20251110
<ACCEPTANCE-DATETIME>20251110163826
ACCESSION NUMBER:		0001759710-25-000005
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250407
FILED AS OF DATE:		20251110
DATE AS OF CHANGE:		20251110

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Cook Tracey H
		CENTRAL INDEX KEY:			0001759710
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16129
		FILM NUMBER:		251466913

	MAIL ADDRESS:	
		STREET 1:		1725 SHEPHERD RD
		CITY:			CHATTANOOGA
		STATE:			TN
		ZIP:			37421

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FLUOR CORP
		CENTRAL INDEX KEY:			0001124198
		STANDARD INDUSTRIAL CLASSIFICATION:	HEAVY CONSTRUCTION OTHER THAN BUILDING CONST - CONTRACTORS [1600]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				330927079
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6700 LAS COLINAS BLVD
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
		BUSINESS PHONE:		4693987000

	MAIL ADDRESS:	
		STREET 1:		6700 LAS COLINAS BLVD
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>form3a-11102025_091122.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2025-04-07</periodOfReport>

    <dateOfOriginalSubmission>2025-04-16</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001124198</issuerCik>
        <issuerName>FLUOR CORP</issuerName>
        <issuerTradingSymbol>FLR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001759710</rptOwnerCik>
            <rptOwnerName>Cook Tracey H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O FLUOR CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>6700 LAS COLINAS BLVD</rptOwnerStreet2>
            <rptOwnerCity>IRVING</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75039</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>EVP, Chief HR Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2182.3886</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By 401(k) Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This Form 3/A is being filed to amend the Form 3 that the Reporting Person filed on April 16, 2025 (&quot;Original Filing&quot;), which inadvertently reported that the Reporting Person indirectly owned 5,134.2022 shares of Common Stock. In fact, the Reporting Person owned 2,182.3886 shares of Common Stock as of the date of the Original Filing. These shares of Common Stock were also inadvertently reported in one Form 4 filed by the Reporting Person after the Original Filing.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Nicholas A. Gaspard by Power of Attorney</signatureName>
        <signatureDate>2025-11-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
