EX-23.1 9 exhibit231-consentofindepe.htm EXHIBIT 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the incorporation by reference in the following Registration Statements:

1. | Registration Statement (Form S-8 No. 333-203755) pertaining to the 2015 Omnibus Incentive Plan,

2. | Registration Statement (Form S-8 No. 333-143397) pertaining to the 2007 Outside Director Incentive Plan,

3. | Registration Statements (Form S-8 No. 333-191964, No. 333-127341 and No. 333-158903) pertaining to the 2005 Omnibus Incentive Plan,

4. | Registration Statements (Form S-8 No. 333-157236, No. 33-37500 and No.333-108321) pertaining to The 401(k) Stock Purchase Plan for Employees of Cullen/Frost Bankers, Inc. and its Affiliates,

5. | Registration Statement (Form S-8 No. 33-39478) pertaining to the 1991 Thrift Incentive Stock Purchase Plan for Employees of Cullen/Frost Bankers, Inc. and its Affiliates, and

6. | Registration Statement (Form S-3 No. 333-214987) of Cullen/Frost Bankers, Inc.;

of our reports dated February 7, 2018, with respect to the consolidated financial statements of Cullen/Frost Bankers, Inc., and the effectiveness of internal control over financial reporting of Cullen/Frost Bankers, Inc., included in the Annual Report (Form 10-K) for the year ended December 31, 2017.
/s/ Ernst & Young LLP
San Antonio, Texas
February 7, 2018