-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 DF2VxeIa6Pr8SzNyVl9gNhdj9BojurIMB9xG2PwDoG7YYtH07UvRbO16zDMg7ScW
 t9dT/Wv6pju1WiV049yIgA==

<SEC-DOCUMENT>0001209191-03-013444.txt : 20030725
<SEC-HEADER>0001209191-03-013444.hdr.sgml : 20030725
<ACCEPTANCE-DATETIME>20030725110517
ACCESSION NUMBER:		0001209191-03-013444
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030717
FILED AS OF DATE:		20030725

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LEWIS R DEAN
		CENTRAL INDEX KEY:			0001256005

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25142
		FILM NUMBER:		03802397

	BUSINESS ADDRESS:	
		STREET 1:		COLLEGE OF BUSINESS ADMINISTRATION
		STREET 2:		P.O. BOX 2056
		CITY:			HUNTSVILLE
		STATE:			TX
		ZIP:			77341

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MITCHAM INDUSTRIES INC
		CENTRAL INDEX KEY:			0000926423
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-EQUIPMENT RENTAL & LEASING, NEC [7359]
		IRS NUMBER:				760210849
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			0131

	BUSINESS ADDRESS:	
		STREET 1:		8141 SH 75 SOUTH
		STREET 2:		PO BOX 1175
		CITY:			HUNTSVILLE
		STATE:			TX
		ZIP:			77342
		BUSINESS PHONE:		9362912277

	MAIL ADDRESS:	
		STREET 1:		P O BOX 1175
		CITY:			HUNTSVILLE
		STATE:			TX
		ZIP:			77342
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>boh07540_boh1rdl.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0101</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-07-17</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000926423</issuerCik><issuerName>MITCHAM INDUSTRIES INC</issuerName>        <issuerTradingSymbol>MIND</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001256005</rptOwnerCik><rptOwnerName>LEWIS R DEAN</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeSecurity><securityTitle><value>Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>1.90</
value></conversionOrExercisePrice><transactionDate><value>2003-07-17</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>30000</value></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2004-07-17</value></exerciseDate><expirationDate><value>2013-07-17</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>30000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>30000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ow
nershipNature></derivativeSecurity><ownerSignature><signatureName>/s/ R. Dean Lewis</signatureName><signatureDate>2003-07-25</signatureDate></ownerSignature></ownershipDocument>

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