<SEC-DOCUMENT>0000866609-18-000007-index.html : 20180212
<SEC-HEADER>0000866609-18-000007.hdr.sgml : 20180212
<ACCEPTANCE-DATETIME>20180209190505
ACCESSION NUMBER:		0000866609-18-000007
CONFORMED SUBMISSION TYPE:	10-K/A
PUBLIC DOCUMENT COUNT:		6
CONFORMED PERIOD OF REPORT:	20171231
FILED AS OF DATE:		20180212
DATE AS OF CHANGE:		20180209

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:		10-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12691
		FILM NUMBER:		18593481

	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>
<DOCUMENT>
<TYPE>10-K/A
<SEQUENCE>1
<FILENAME>a10ka1231172017.htm
<DESCRIPTION>10-K/A
<TEXT>
Document 1 - file: a10ka1231172017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>a10kaex231.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
Document 2 - file: a10kaex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>3
<FILENAME>io-12312017x10kaex311.htm
<DESCRIPTION>EXHIBIT 31.1
<TEXT>
Document 3 - file: io-12312017x10kaex311.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>4
<FILENAME>io-12312017x10kaex312.htm
<DESCRIPTION>EXHIBIT 31.2
<TEXT>
Document 4 - file: io-12312017x10kaex312.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>5
<FILENAME>io-12312017x10kaex321.htm
<DESCRIPTION>EXHIBIT 32.1
<TEXT>
Document 5 - file: io-12312017x10kaex321.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.2
<SEQUENCE>6
<FILENAME>io-12312017x10kaex322.htm
<DESCRIPTION>EXHIBIT 32.2
<TEXT>
Document 6 - file: io-12312017x10kaex322.htm

</DOCUMENT>
</SEC-DOCUMENT>