<SEC-DOCUMENT>0001209191-12-034117.txt : 20120615
<SEC-HEADER>0001209191-12-034117.hdr.sgml : 20120615
<ACCEPTANCE-DATETIME>20120615165307
ACCESSION NUMBER:		0001209191-12-034117
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20120613
FILED AS OF DATE:		20120615
DATE AS OF CHANGE:		20120615

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Treacy Dennis H.
		CENTRAL INDEX KEY:			0001531391

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15321
		FILM NUMBER:		12910644

	MAIL ADDRESS:	
		STREET 1:		200 COMMERCE STREET
		CITY:			SMITHFIELD
		STATE:			VA
		ZIP:			23430

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SMITHFIELD FOODS INC
		CENTRAL INDEX KEY:			0000091388
		STANDARD INDUSTRIAL CLASSIFICATION:	MEAT PACKING PLANTS [2011]
		IRS NUMBER:				520845861
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			0427

	BUSINESS ADDRESS:	
		STREET 1:		200 COMMERCE STREET
		STREET 2:		EXECUTIVE OFFICE BUILDING
		CITY:			SMITHFIELD
		STATE:			VA
		ZIP:			23430
		BUSINESS PHONE:		7573653000

	MAIL ADDRESS:	
		STREET 1:		200 COMMERCE STREET
		STREET 2:		EXECUTIVE OFFICE BUILDING
		CITY:			SMITHFIELD
		STATE:			VA
		ZIP:			23430

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LIBERTY EQUITIES CORP
		DATE OF NAME CHANGE:	19710221

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LIBERTY REAL ESTATE TRUST
		DATE OF NAME CHANGE:	19661113
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0305</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-06-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000091388</issuerCik>
        <issuerName>SMITHFIELD FOODS INC</issuerName>
        <issuerTradingSymbol>SFD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001531391</rptOwnerCik>
            <rptOwnerName>Treacy Dennis H.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 COMMERCE STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SMITHFIELD</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>23430</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>common stock, par value $.50</value>
            </securityTitle>
            <transactionDate>
                <value>2012-06-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>15106</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16106</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>common stock, par value $.50</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2811.48</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Shares held in 401k of reporting person</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Includes 7553 shares of restricted stock units (RSUs) the reporting person elected to receive on a deferred basis in lieu of a portion of his 2012 annual cash incentive award pursuant to the Company's Executive Stock Purchase Plan.  Also includes 7553 RSUs representing the Company match on such deferral, subject to three year cliff-vesting.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Michael H. Cole, as attorney-in-fact</signatureName>
        <signatureDate>2012-06-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
