<SEC-DOCUMENT>0000039263-20-000052-index.html : 20200814
<SEC-HEADER>0000039263-20-000052.hdr.sgml : 20200814
<ACCEPTANCE-DATETIME>20200813180656
ACCESSION NUMBER:		0000039263-20-000052
CONFORMED SUBMISSION TYPE:	POSASR
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20200814
DATE AS OF CHANGE:		20200813
EFFECTIVENESS DATE:		20200814

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CULLEN/FROST BANKERS, INC.
		CENTRAL INDEX KEY:			0000039263
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				741751768
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		POSASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-244971
		FILM NUMBER:		201100560

	BUSINESS ADDRESS:	
		STREET 1:		111 W HOUSTON ST
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78205
		BUSINESS PHONE:		210-220-4011

	MAIL ADDRESS:	
		STREET 1:		POST OFFICE BOX 1600
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78296-1600

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CULLEN FROST BANKERS INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FROST BANK CORP
		DATE OF NAME CHANGE:	19770823
</SEC-HEADER>
<DOCUMENT>
<TYPE>POSASR
<SEQUENCE>1
<FILENAME>a3q20forms-3xposasr.htm
<DESCRIPTION>POSASR
<TEXT>
Document 1 - file: a3q20forms-3xposasr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>exhibit51-opinionandconsen.htm
<DESCRIPTION>EXHIBIT 5.1 - OPINION AND CONSENT OF SULLIVAN & CROMWELL LLP (AMENDED)
<TEXT>
Document 2 - file: exhibit51-opinionandconsen.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.2
<SEQUENCE>3
<FILENAME>exhibit52-opinionandconsen.htm
<DESCRIPTION>EXHIBIT 5.2 - OPINION AND CONSENT OF JAMES L. WATERS (AMENDED)
<TEXT>
Document 3 - file: exhibit52-opinionandconsen.htm

</DOCUMENT>
</SEC-DOCUMENT>