<SEC-DOCUMENT>0001104659-21-051276-index.html : 20210416
<SEC-HEADER>0001104659-21-051276.hdr.sgml : 20210416
<ACCEPTANCE-DATETIME>20210416134024
ACCESSION NUMBER:		0001104659-21-051276
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20210517
FILED AS OF DATE:		20210416
DATE AS OF CHANGE:		20210416

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERNATIONAL BANCSHARES CORP
		CENTRAL INDEX KEY:			0000315709
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				742157138
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09439
		FILM NUMBER:		21830978

	BUSINESS ADDRESS:	
		STREET 1:		12OO SAN BERNARDO AVE
		STREET 2:		PO BOX 1359
		CITY:			LAREDO
		STATE:			TX
		ZIP:			78040-1359
		BUSINESS PHONE:		9567227611

	MAIL ADDRESS:	
		STREET 1:		P O BOX 1359
		STREET 2:		1200 SAN BERNARDO
		CITY:			LAREDO
		STATE:			TX
		ZIP:			78040
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>tm219313-1_def14a.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: tm219313-1_def14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>sg_dennisnixon-bw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: sg_dennisnixon-bw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tm219313d1-pc_pg01proxybw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tm219313d1-pc_pg01proxybw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tm219313d1-pc_pg02proxybw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: tm219313d1-pc_pg02proxybw.jpg

</DOCUMENT>
</SEC-DOCUMENT>