<SEC-DOCUMENT>0001628280-16-017368-index.html : 20160627
<SEC-HEADER>0001628280-16-017368.hdr.sgml : 20160627
<ACCEPTANCE-DATETIME>20160627154540
ACCESSION NUMBER:		0001628280-16-017368
CONFORMED SUBMISSION TYPE:	10-K/A
PUBLIC DOCUMENT COUNT:		7
CONFORMED PERIOD OF REPORT:	20151231
FILED AS OF DATE:		20160627
DATE AS OF CHANGE:		20160627

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:		161733350

	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>10-K/A
<SEQUENCE>1
<FILENAME>io-12312015x10kaamend2.htm
<DESCRIPTION>10-K/A AMENDMENT NO. 2
<TEXT>
Document 1 - file: io-12312015x10kaamend2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.3
<SEQUENCE>2
<FILENAME>io-12312014x10kxaex233gt.htm
<DESCRIPTION>EXHIBIT 23.3
<TEXT>
Document 2 - file: io-12312014x10kxaex233gt.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>3
<FILENAME>io-12312015x10kaamend2ex311.htm
<DESCRIPTION>EXHIBIT 31.1
<TEXT>
Document 3 - file: io-12312015x10kaamend2ex311.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>4
<FILENAME>io-12312015x10kaamend2ex312.htm
<DESCRIPTION>EXHIBIT 31.2
<TEXT>
Document 4 - file: io-12312015x10kaamend2ex312.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>5
<FILENAME>io-12312015x10kaamend2ex321.htm
<DESCRIPTION>EXHIBIT 32.1
<TEXT>
Document 5 - file: io-12312015x10kaamend2ex321.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.2
<SEQUENCE>6
<FILENAME>io-12312015x10kaamend2ex322.htm
<DESCRIPTION>EXHIBIT 32.2
<TEXT>
Document 6 - file: io-12312015x10kaamend2ex322.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>7
<FILENAME>a2015inovafs-2016411x10kex.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 7 - file: a2015inovafs-2016411x10kex.htm

</DOCUMENT>
</SEC-DOCUMENT>