EX-23.1 2 exhibit231consentofindepen.htm EX-23.1 - CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 33-39478) pertaining to the Thrift Incentive Stock Purchase Plan for Certain Employees of Cullen/Frost Bankers, Inc. of our report dated March 25, 2024, with respect to the financial statements of the Thrift Incentive Stock Purchase Plan for Certain Employees of Cullen/Frost Bankers, Inc. included in this Annual Report (Form 11-K) for the year ended December 31, 2023.

/s/ Ernst & Young LLP

San Antonio, TX

Date: March 25, 2024