<SEC-DOCUMENT>0001020859-21-000099.txt : 20211005
<SEC-HEADER>0001020859-21-000099.hdr.sgml : 20211005
<ACCEPTANCE-DATETIME>20211005164800
ACCESSION NUMBER:		0001020859-21-000099
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211001
FILED AS OF DATE:		20211005
DATE AS OF CHANGE:		20211005

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Stigers Michael C
		CENTRAL INDEX KEY:			0001661990

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15723
		FILM NUMBER:		211307381

	MAIL ADDRESS:	
		STREET 1:		11840 VALLEY VIEW ROAD
		CITY:			EDEN PRAIRIE
		STATE:			MN
		ZIP:			55344

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITED NATURAL FOODS INC
		CENTRAL INDEX KEY:			0001020859
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-GROCERIES & GENERAL LINE [5141]
		IRS NUMBER:				050376157
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0731

	BUSINESS ADDRESS:	
		STREET 1:		313 IRON HORSE WAY
		CITY:			PROVIDENCE
		STATE:			RI
		ZIP:			02908
		BUSINESS PHONE:		401-528-8634

	MAIL ADDRESS:	
		STREET 1:		313 IRON HORSE WAY
		CITY:			PROVIDENCE
		STATE:			RI
		ZIP:			02908
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_163346686844445.xml
<DESCRIPTION>FORM 4
<TEXT>
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        <issuerName>UNITED NATURAL FOODS INC</issuerName>
        <issuerTradingSymbol>UNFI</issuerTradingSymbol>
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        <reportingOwnerId>
            <rptOwnerCik>0001661990</rptOwnerCik>
            <rptOwnerName>Stigers Michael C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O UNITED NATURAL FOODS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>313 IRON HORSE WAY</rptOwnerStreet2>
            <rptOwnerCity>PROVIDENCE</rptOwnerCity>
            <rptOwnerState>RI</rptOwnerState>
            <rptOwnerZipCode>02908</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO CUB</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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            <transactionDate>
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            <transactionCoding>
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                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                    <value>35157</value>
                </transactionShares>
                <transactionPricePerShare>
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                    <footnoteId id="F1"/>
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                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By revocable family trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>14.77</value>
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            <transactionDate>
                <value>2021-10-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>6901</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.77</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2022-07-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>6901.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
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            </securityTitle>
            <conversionOrExercisePrice>
                <value>42.04</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-10-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>19218</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>42.04</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
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            <expirationDate>
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                    <value>D</value>
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                <value>Employee Stock Option (right to buy)</value>
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                    <value>9038</value>
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                    <value>36.54</value>
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                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F4"/>
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            <expirationDate>
                <value>2026-04-28</value>
            </expirationDate>
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        </derivativeTransaction>
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    <footnotes>
        <footnote id="F1">Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $48.00 to $48.37.</footnote>
        <footnote id="F2">These stock options were granted on July 17, 2012 and were fully vested and exercisable on July 17, 2015.</footnote>
        <footnote id="F3">These stock options were granted on May 7, 2013 and were fully vested and exercisable on May 7, 2016.</footnote>
        <footnote id="F4">These stock options were granted on April 28, 2016 and were fully vested and exercisable on April 28, 2019.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Jill E. Sutton, Power-of-Attorney, in fact</signatureName>
        <signatureDate>2021-10-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
