EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the following Registration Statements of First Financial Bancorp:

Form S-8 No.  338-86781

Form S-3 No.  333-25745

Form S-3 No.  333-156841

Form S-3 No.  333-153751

Form S-8 No.  333-168675

Form S-8 No.  333-188593

Form S-3 ASR No. 333-197771

Form S-8 No. 333-218188

Form S-3 ASR No. 333-219554

Form S-4 No. 333-220583

Form S-3 ASR No. 333-233701

Form S-8 No. 333-238698

Form S-3 ASR No. 333-262089

of our report dated February 24, 2023 relating to the 2022 consolidated financial statements and effectiveness of internal control over financial reporting, appearing in this Annual Report on Form 10-K.

        Crowe LLP

Louisville, Kentucky

February 24, 2023