Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the following Registration Statements of Park National Corporation:

Form S-8 No.  33-92060

Form S-8 No.  333-52653

Form S-8 No.  333-59360

Form S-8 No.  333-59378

Form S-8 No.  333-91178

Form S-8 No.  333-168334

Form S-8 No.  333-188323

Form S-3 No. 333-207137

of our report dated February 21, 2017, relating to the consolidated financial statements and effectiveness of internal control over financial reporting, appearing in this Annual Report on Form 10-K.

Crowe Horwath LLP

Columbus, Ohio

February 21, 2017