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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 DDndYvdMCPENUB5XHiWAB4e+yinnMI1IdA8/S/3rxG06LS2zum1tsSVmYJhEg7d8
 +BEqjyNn27CggqBeDYC0Yw==

<SEC-DOCUMENT>0001104659-04-012216.txt : 20040503
<SEC-HEADER>0001104659-04-012216.hdr.sgml : 20040503
<ACCEPTANCE-DATETIME>20040503133107
ACCESSION NUMBER:		0001104659-04-012216
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040429
FILED AS OF DATE:		20040503

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOUTHERN PERU COPPER CORP/
		CENTRAL INDEX KEY:			0001001838
		STANDARD INDUSTRIAL CLASSIFICATION:	METAL MINING [1000]
		IRS NUMBER:				133849074
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2575 EAST CAMELBACK ROAD, SUITE 500
		CITY:			PHOENIX
		STATE:			AZ
		ZIP:			85016
		BUSINESS PHONE:		(602) 977-6500

	MAIL ADDRESS:	
		STREET 1:		2575 EAST CAMELBACK ROAD, SUITE 500
		CITY:			PHOENIX
		STATE:			AZ
		ZIP:			85016

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SOUTHERN PERU COPPER HOLDING CO
		DATE OF NAME CHANGE:	19951006

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CIFUENTES GILBERTO PEREZALONSO
		CENTRAL INDEX KEY:			0001223261

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14066
		FILM NUMBER:		04772774

	BUSINESS ADDRESS:	
		STREET 1:		BAJA CALIFORNIA 200
		CITY:			MEXICO
		STATE:			A1
		ZIP:			00000
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-04-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001001838</issuerCik>
        <issuerName>SOUTHERN PERU COPPER CORP/</issuerName>
        <issuerTradingSymbol>PCU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001223261</rptOwnerCik>
            <rptOwnerName>CIFUENTES GILBERTO PEREZALONSO</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SOUTHERN PERU COPPER CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>2575 E. CAMELBACK RD., SUITE 500</rptOwnerStreet2>
            <rptOwnerCity>PHOENIX</rptOwnerCity>
            <rptOwnerState>AZ</rptOwnerState>
            <rptOwnerZipCode>85016</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-04-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>200</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>800</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Received pursuant to Issuer's Directors' Stock Award Plan for service as a director ? exempt transaction under Rule 16b-3(d).</footnote>
        <footnote id="F2">N/A</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Gilberto Perezalonso Cifuentes by his attorney-in-fact Ligia Sandoval Parra</signatureName>
        <signatureDate>2004-04-30</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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