<SEC-DOCUMENT>0001104659-21-054994-index.html : 20210426
<SEC-HEADER>0001104659-21-054994.hdr.sgml : 20210426
<ACCEPTANCE-DATETIME>20210426172048
ACCESSION NUMBER:		0001104659-21-054994
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20210426
DATE AS OF CHANGE:		20210426

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:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-234606
		FILM NUMBER:		21855021

	BUSINESS ADDRESS:	
		STREET 1:		2105 CITYWEST BLVD
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			770422855
		BUSINESS PHONE:		2819333339

	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>424B5
<SEQUENCE>1
<FILENAME>tm2113853-1_424b5.htm
<DESCRIPTION>424B5
<TEXT>
Document 1 - file: tm2113853-1_424b5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>lg_ion-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: lg_ion-4c.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>lg_ionpowering-pn.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: lg_ionpowering-pn.jpg

</DOCUMENT>
</SEC-DOCUMENT>