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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,
 AjQoW6wTceCABqK6W+cUP3kNpoK906CK+PatpND0PUUFfWiS3OPO6cxPvSsJXcOb
 VCqLQ3pDOz5/+v97+mD40w==

<SEC-DOCUMENT>0001121844-04-000009.txt : 20040806
<SEC-HEADER>0001121844-04-000009.hdr.sgml : 20040806
<ACCEPTANCE-DATETIME>20040806145804
ACCESSION NUMBER:		0001121844-04-000009
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040805
FILED AS OF DATE:		20040806

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COMMONWEALTH INDUSTRIES INC/DE/
		CENTRAL INDEX KEY:			0000934747
		STANDARD INDUSTRIAL CLASSIFICATION:	ROLLING DRAWING & EXTRUDING OF NONFERROUS METALS [3350]
		IRS NUMBER:				133245741
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		500 WEST JEFFERSON STREET
		STREET 2:		PNC PLAZA - 19TH FLOOR
		CITY:			LOUISVILLE
		STATE:			KY
		ZIP:			40202-2823
		BUSINESS PHONE:		502-589-8100

	MAIL ADDRESS:	
		STREET 1:		500 WEST JEFFERSON STREET
		STREET 2:		PNC PLAZA - 19TH FLOOR
		CITY:			LOUISVILLE
		STATE:			KY
		ZIP:			40202-2823

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMMONWEALTH ALUMINUM CORP
		DATE OF NAME CHANGE:	19941228

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KAMINSKI MARK V
		CENTRAL INDEX KEY:			0001121844
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25642
		FILM NUMBER:		04957668

	BUSINESS ADDRESS:	
		STREET 1:		C/O COMMON WEALTH INDUSTRIES INC
		STREET 2:		500 WEST JEFFERSON SUITE 1900
		CITY:			LOUISVILLE
		STATE:			KY
		ZIP:			40202
		BUSINESS PHONE:		5025898100

	MAIL ADDRESS:	
		STREET 1:		C/O COMMONWEALTH INDUSTRIES INC
		STREET 2:		500 WEST JEFFERSON SUITE 1900
		CITY:			LOUISVILLE
		STATE:			KY
		ZIP:			40202
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-08-05</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000934747</issuerCik>
        <issuerName>COMMONWEALTH INDUSTRIES INC/DE/</issuerName>
        <issuerTradingSymbol>CMIN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001121844</rptOwnerCik>
            <rptOwnerName>KAMINSKI MARK V</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>500 W. JEFFERSON STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1900</rptOwnerStreet2>
            <rptOwnerCity>LOUISVILLE</rptOwnerCity>
            <rptOwnerState>KY</rptOwnerState>
            <rptOwnerZipCode>40202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Former Director, Pres. &amp; CEO</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-08-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7000</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.219</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>153788</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7939.28</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>401(k) Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.219</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-08-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.219</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2004-01-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2011-01-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>93000</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reflecting the portion of vested but unexercised options granted on January 1, 2001 and vesting on January 1, 2004.</footnote>
        <footnote id="F2">Shares acquired by exercising a portion of options vesting on January 1, 2004.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Mark K. Kaminski</signatureName>
        <signatureDate>2004-08-06</signatureDate>
    </ownerSignature>
</ownershipDocument>

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