<SEC-DOCUMENT>0001047469-18-002797-index.html : 20180413
<SEC-HEADER>0001047469-18-002797.hdr.sgml : 20180413
<ACCEPTANCE-DATETIME>20180413160626
ACCESSION NUMBER:		0001047469-18-002797
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		6
CONFORMED PERIOD OF REPORT:	20180516
FILED AS OF DATE:		20180413
DATE AS OF CHANGE:		20180413
EFFECTIVENESS DATE:		20180413

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ION GEOPHYSICAL CORP
		CENTRAL INDEX KEY:			0000866609
		STANDARD INDUSTRIAL CLASSIFICATION:	OIL AND GAS FIELD EXPLORATION SERVICES [1382]
		IRS NUMBER:				222286646
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12691
		FILM NUMBER:		18754381

	BUSINESS ADDRESS:	
		STREET 1:		2105 CITYWEST BLVD
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			770422855
		BUSINESS PHONE:		281.933.3339

	MAIL ADDRESS:	
		STREET 1:		2105 CITYWEST BLVD
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			770422855

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INPUT OUTPUT INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
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<TYPE>DEF 14A
<SEQUENCE>1
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<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: a2235205zdef14a.htm

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<DESCRIPTION>G163936.JPG
<TEXT>
Document 2 - file: g163936.jpg

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<SEQUENCE>3
<FILENAME>g627160.jpg
<DESCRIPTION>G627160.JPG
<TEXT>
Document 3 - file: g627160.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g76840.jpg
<DESCRIPTION>G76840.JPG
<TEXT>
Document 4 - file: g76840.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
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<DESCRIPTION>G28902BGI001.GIF
<TEXT>
Document 5 - file: g28902bgi001.gif

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<SEQUENCE>6
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<TEXT>
Document 6 - file: g28902bgi002.gif

</DOCUMENT>
</SEC-DOCUMENT>