-----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,
 UiXijgH6LU5QDV/RmcBURYjVByfi/0RAI0pMFZlcwn+dMM8wr/JhbgFzRdugHxGb
 fxr3FkASZb4R40VMpbskQQ==

<SEC-DOCUMENT>0001207193-03-000006.txt : 20030702
<SEC-HEADER>0001207193-03-000006.hdr.sgml : 20030702
<ACCEPTANCE-DATETIME>20030702115450
ACCESSION NUMBER:		0001207193-03-000006
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030630
FILED AS OF DATE:		20030702

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CATHAY BANCORP INC
		CENTRAL INDEX KEY:			0000861842
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				954274680
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		777 N BROADWAY
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90012
		BUSINESS PHONE:		2136254700

	MAIL ADDRESS:	
		STREET 1:		777 NORTH BROADWAY
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90012

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHEN  HENG W
		CENTRAL INDEX KEY:			0001207193

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18630
		FILM NUMBER:		03770365

	BUSINESS ADDRESS:	
		STREET 1:		CITY NATIONAL BANK
		STREET 2:		606 S. OLIVE STREET, SIXTH FLOOR
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90014
		BUSINESS PHONE:		2133472646

	MAIL ADDRESS:	
		STREET 1:		C/O CITY NATIONAL CORP ,GENERAL COUNSEL
		STREET 2:		400 N ROXBURY DRIVE
		CITY:			BEVERLY HILLS
		STATE:			CA
		ZIP:			90210
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>3</documentType><periodOfReport>2003-06-30</periodOfReport>
    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000861842</issuerCik>
        <issuerName>CATHAY BANCORP INC</issuerName>
        <issuerTradingSymbol>CATY</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId>
            <rptOwnerCik>0001207193</rptOwnerCik>
            <rptOwnerName>CHEN  HENG W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Executive Vice President/CFO</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeSecurity><securityTitle><value>Common Stock</value></securityTitle><transactionAmounts><transactionShares><value>0</value></transactionShares></transactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeSecurity><footnotes/><ownerSignature><signatureName>/s/ Monica Chen, Attorney in Fact</signatureName><signatureDate>2003-07-02</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----