-----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,
 WzTnSFWVh+Bp4aW6XYnl94gyofj+0IKGXP/rDPVPSnrFP/X+t/0qMpfwG9qhpjVc
 BLmcCKWcGWb1t0DsOE1UzQ==

<SEC-DOCUMENT>0001125282-06-005328.txt : 20060828
<SEC-HEADER>0001125282-06-005328.hdr.sgml : 20060828
<ACCEPTANCE-DATETIME>20060828090437
ACCESSION NUMBER:		0001125282-06-005328
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060824
FILED AS OF DATE:		20060828
DATE AS OF CHANGE:		20060828

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Crockett David S JR
		CENTRAL INDEX KEY:			0001372631

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23064
		FILM NUMBER:		061057242

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		214-368-3382

	MAIL ADDRESS:	
		STREET 1:		11609 VALLEYDALE
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75230

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOUTHWEST BANCORP INC
		CENTRAL INDEX KEY:			0000914374
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				731136584
		STATE OF INCORPORATION:			OK
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074
		BUSINESS PHONE:		4053722230

	MAIL ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>form.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-08-24</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000914374</issuerCik>
        <issuerName>SOUTHWEST BANCORP INC</issuerName>
        <issuerTradingSymbol>OKSB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001372631</rptOwnerCik>
            <rptOwnerName>Crockett David S JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11609 VALLEYDALE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75230</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>David S Crockett</signatureName>
        <signatureDate>2006-08-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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