-----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,
 PcwqDtn0s+6PAxMGvFf2/Sd+ejkPf7ChK6htn1nU0YOIdGSpEJ3a121zLN3V6IzU
 Uo7WSJ21kTHiF+rJgaFTFw==

<SEC-DOCUMENT>0001209191-03-034833.txt : 20031212
<SEC-HEADER>0001209191-03-034833.hdr.sgml : 20031212
<ACCEPTANCE-DATETIME>20031212172742
ACCESSION NUMBER:		0001209191-03-034833
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031202
FILED AS OF DATE:		20031212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FRIEDEMANN CHRIS
		CENTRAL INDEX KEY:			0001272512

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12691
		FILM NUMBER:		031052694

	BUSINESS ADDRESS:	
		STREET 1:		INPUT/OUTPUT INC
		STREET 2:		12300 PARC CREST DRIVE
		CITY:			STAFFORD
		STATE:			TX
		ZIP:			77477

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INPUT OUTPUT INC
		CENTRAL INDEX KEY:			0000866609
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		IRS NUMBER:				222286646
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0531

	BUSINESS ADDRESS:	
		STREET 1:		11104 W AIRPORT BLVD
		STREET 2:		SUITE 200
		CITY:			STAFFORD
		STATE:			TX
		ZIP:			77477
		BUSINESS PHONE:		2819333339

	MAIL ADDRESS:	
		STREET 1:		11104 W AIRPORT BLVD
		STREET 2:		SUITE 200
		CITY:			STAFFORD
		STATE:			TX
		ZIP:			77477
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>3</documentType><periodOfReport>2003-12-02</periodOfReport><noSecuritiesOwned>0</noSecuritiesOwned><issuer><issuerCik>0000866609</issuerCik><issuerName>INPUT OUTPUT INC</issuerName>        <issuerTradingSymbol>IO</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001272512</rptOwnerCik><rptOwnerName>FRIEDEMANN CHRIS</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>12300 PARC CREST DRIVE</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>STAFFORD</rptOwnerCity><rptOwnerState>TX</rptOwnerState><rptOwnerZipCode>77477</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Vice President</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><n
onDerivativeHolding><securityTitle><value>Restricted Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>15000.0000</value><footnoteId id="F1" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeHolding><securityTitle><value>Option to purchase common stock.</value></securityTitle><conversionOrExercisePrice><value>4.9000</value></conversionOrExercisePrice><exerciseDate><value>2004-08-04</value><footnoteId id="F2" /></exerciseDate><expirationDate><value>2007-08-04</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>85000.0000</value></underlyingSecurityShares></underlyingSecurity><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipN
ature></derivativeHolding></derivativeTable><footnotes><footnote id="F1">4950 shares vest on 08/04/2004, 08/04/2005 and 08/04/2006.</footnote><footnote id="F2">The option becomes exercisable in 4 equal installments beginning on 08/04/2004.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ Brad Eastman, Attorney-in-fact</signatureName><signatureDate>2004-12-10</signatureDate></ownerSignature></ownershipDocument>

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