-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Gua020MKRSpDFxYdfbtBbkMpNItdnvTLNyKem92ODBJdilq7VSaGjR41ag3cTJBH
 NLuas8M+dNlGLdyjkdXhIA==

<SEC-DOCUMENT>0000350426-03-000016.txt : 20031231
<SEC-HEADER>0000350426-03-000016.hdr.sgml : 20031231
<ACCEPTANCE-DATETIME>20031231102754
ACCESSION NUMBER:		0000350426-03-000016
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031231
FILED AS OF DATE:		20031231

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OMALLEY WILLIAM C
		CENTRAL INDEX KEY:			0001197250

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10454
		FILM NUMBER:		031079366

	MAIL ADDRESS:	
		STREET 1:		601 POYDRAS ST
		STREET 2:		STE 1900
		CITY:			NEW ORLEANS
		STATE:			LA
		ZIP:			7006

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PLAINS RESOURCES INC
		CENTRAL INDEX KEY:			0000350426
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-PETROLEUM & PETROLEUM PRODUCTS (NO BULK STATIONS) [5172]
		IRS NUMBER:				132898764
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		700 MILAM
		STREET 2:		SUITE 3100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002
		BUSINESS PHONE:		8322396000

	MAIL ADDRESS:	
		STREET 1:		700 MILAM
		STREET 2:		SUITE 3100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-12-31</periodOfReport>
    <issuer>
        <issuerCik>0000350426</issuerCik>
        <issuerName>PLAINS RESOURCES INC</issuerName>
        <issuerTradingSymbol>PLX</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001197250</rptOwnerCik>
            <rptOwnerName>OMALLEY WILLIAM C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 POYDRAS STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1900</rptOwnerStreet2>
            <rptOwnerCity>NEW ORLEANS</rptOwnerCity>
            <rptOwnerState>LA</rptOwnerState>
            <rptOwnerZipCode>70130</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>2003-12-31</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>249</value><footnoteId id="F1"/></transactionShares><transactionPricePerShare><value>16.08</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>15829</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwners
hip></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes><footnote id="F1">Represents quarterly fee granted as part of non-employee director compensation.</footnote></footnotes><remarks/><ownerSignature><signatureName>Deborah R. Anderson, attorney-in-fact for William C. O'Malley</signatureName><signatureDate>2003-12-31</signatureDate></ownerSignature></ownershipDocument>

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