<SEC-DOCUMENT>0001214659-21-002995.txt : 20210310
<SEC-HEADER>0001214659-21-002995.hdr.sgml : 20210310
<ACCEPTANCE-DATETIME>20210310170549
ACCESSION NUMBER:		0001214659-21-002995
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210310
FILED AS OF DATE:		20210310
DATE AS OF CHANGE:		20210310

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MISSAD MATTHEW J
		CENTRAL INDEX KEY:			0001186284

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22684
		FILM NUMBER:		21730662

	MAIL ADDRESS:	
		STREET 1:		2801 EAST BELTLINE, N.E.
		CITY:			GRAND RAPIDS
		STATE:			MI
		ZIP:			49525

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UFP INDUSTRIES INC
		CENTRAL INDEX KEY:			0000912767
		STANDARD INDUSTRIAL CLASSIFICATION:	SAWMILLS, PLANNING MILLS, GENERAL [2421]
		IRS NUMBER:				381465835
		STATE OF INCORPORATION:			MI
		FISCAL YEAR END:			1226

	BUSINESS ADDRESS:	
		STREET 1:		2801 EAST BELTLINE NE
		CITY:			GRAND RAPIDS
		STATE:			MI
		ZIP:			49525
		BUSINESS PHONE:		6163646161

	MAIL ADDRESS:	
		STREET 1:		2801 EAST BELTLINE NE
		CITY:			GRAND RAPIDS
		STATE:			MI
		ZIP:			49505

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	UNIVERSAL FOREST PRODUCTS INC
		DATE OF NAME CHANGE:	19930929
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>marketforms-51863.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-03-10</periodOfReport>

    <issuer>
        <issuerCik>0000912767</issuerCik>
        <issuerName>UFP INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>UFPI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001186284</rptOwnerCik>
            <rptOwnerName>MISSAD MATTHEW J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2801 EAST BELTLINE, N.E.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GRAND RAPIDS</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>49525</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-03-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>20000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>67.61</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>301729</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8105</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>401k Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>46729</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Def Comp Interest</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Christina A. Holderman, Attorney-in-Fact for Matthew J. Missad</signatureName>
        <signatureDate>2021-03-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>