<SEC-DOCUMENT>0001104659-16-146302-index.html : 20160923
<SEC-HEADER>0001104659-16-146302.hdr.sgml : 20160923
<ACCEPTANCE-DATETIME>20160923163105
ACCESSION NUMBER:		0001104659-16-146302
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20160923
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20160923
DATE AS OF CHANGE:		20160923

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12691
		FILM NUMBER:		161900177

	BUSINESS ADDRESS:	
		STREET 1:		2105 CITYWEST BLVD
		STREET 2:		SUITE 400
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			770422839
		BUSINESS PHONE:		281.933.3339

	MAIL ADDRESS:	
		STREET 1:		2105 CITYWEST BLVD
		STREET 2:		SUITE 400
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			770422839

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INPUT OUTPUT INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a16-18749_18k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a16-18749_18k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.1
<SEQUENCE>2
<FILENAME>a16-18749_1ex4d1.htm
<DESCRIPTION>EX-4.1
<TEXT>
Document 2 - file: a16-18749_1ex4d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g187491ke03i001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g187491ke03i001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g187491ke01i001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g187491ke01i001.gif

</DOCUMENT>
</SEC-DOCUMENT>