<SEC-DOCUMENT>0001127602-14-000023.txt : 20140102
<SEC-HEADER>0001127602-14-000023.hdr.sgml : 20140101
<ACCEPTANCE-DATETIME>20140102110231
ACCESSION NUMBER:		0001127602-14-000023
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20131231
FILED AS OF DATE:		20140102
DATE AS OF CHANGE:		20140102

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CENTURY ALUMINUM CO
		CENTRAL INDEX KEY:			0000949157
		STANDARD INDUSTRIAL CLASSIFICATION:	PRIMARY PRODUCTION OF ALUMINUM [3334]
		IRS NUMBER:				133070826
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1 SOUTH WACKER DRIVE
		STREET 2:		SUITE 1000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3126963101

	MAIL ADDRESS:	
		STREET 1:		1 SOUTH WACKER DRIVE
		STREET 2:		SUITE 1000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hoerner John E.
		CENTRAL INDEX KEY:			0001529248

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34474
		FILM NUMBER:		14500534

	MAIL ADDRESS:	
		STREET 1:		2511 GARDEN ROAD
		STREET 2:		BUILDING A, SUITE 200
		CITY:			MONTEREY
		STATE:			CA
		ZIP:			93940
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-12-31</periodOfReport>

    <issuer>
        <issuerCik>0000949157</issuerCik>
        <issuerName>CENTURY ALUMINUM CO</issuerName>
        <issuerTradingSymbol>CENX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001529248</rptOwnerCik>
            <rptOwnerName>Hoerner John E.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CENTURY ALUMINUM COMPANY</rptOwnerStreet1>
            <rptOwnerStreet2>ONE SOUTH WACKER DRIVE, SUITE 1000</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>VP of N. American Operations</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2013-12-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1322</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>42046</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reports shares withheld by the Issuer in connection with the vesting of performance share units granted to the Reporting Person pursuant to the Issuer's 2011-2013 Performance Share Program to satisfy tax obligations at a net settlement price equal to the closing price on Nasdaq on December 31, 2013, the vesting date.</footnote>
        <footnote id="F2">Includes the remaining 10,000 unvested performance share units granted to the Reporting Person upon becoming the Issuer's Vice President of North American Operations which will vest on February 28, 2014, and unvested performance share units granted to the Reporting Person pursuant to the Issuer's 2012-2014 and 2013-2015 Performance Share Programs, all under a Rule 16b-3(d) plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Michael A. Serafini, Attorney-in-Fact for John E. Hoerner</signatureName>
        <signatureDate>2014-01-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>doc1.txt
<DESCRIPTION>POWER OF ATTORNEY (PUBLIC): POWER OF ATTORNEY
<TEXT>
			POWER OF ATTORNEY


	KNOW ALL BY THESE PRESENTS, that the undersigned hereby
constitutes and appoints each of Jesse E. Gary and Michael A.
Serafini, signing singly, the undersigned's true and lawful
attorney-in-fact to:


	(1)  	execute for and on behalf of the undersigned,
		in the undersigned's capacity as an officer and/or
		director of Century Aluminum Company (the
		?Company?), all filings in accordance with the
		Securities Exchange Act of 1934 and the rules
		thereunder;


	(2)	do and perform any and all acts for and on behalf
		of the undersigned which may be necessary or
		desirable to complete and execute any such filings
		in accordance with the Securities Exchange Act of
		1934 and the rules thereunder, complete and execute
		any amendment or amendments thereto, and timely
		file such filings with the United States Securities
		and Exchange Commission and any stock exchange or
		similar authority; and


	(3)	take any other action of any type whatsoever in
		connection with the foregoing which, in the opinion
		of such attorney-in-fact, may be of benefit to, in
		the best interest of, or legally required by, the
		undersigned, it being understood that the documents
		executed by such attorney-in-fact on behalf of the
		undersigned pursuant to this Power of Attorney
		shall be in such form and shall contain such terms
		and conditions as such attorney-in-fact may approve
		in such attorney-in-fact's discretion.


	The undersigned hereby grants to each such attorney-in-fact
full power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all
intents and purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation, hereby
ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or
cause to be done by virtue of this power of attorney and the rights and
powers herein granted.  The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with the Securities Exchange
Act of 1934.


	This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to execute such filings in
accordance with the Securities Exchange Act of 1934 and the rules
thereunder, unless earlier revoked by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact.


	IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 22nd day of February, 2013.


/s/ John E. Hoerner
Signature


John E. Hoerner
Print Name
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
