Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statements No. 333-227210, No. 333-120866, No. 333-120867, No. 333-139539, No. 333-139543 and No. 333-188951 of Neenah, Inc. on Form S-8 of our report dated June 28, 2023, with respect to the financial statements and schedule of the Neenah 401(k) Retirement Plan included in this Annual Report (Form 11-K) for the year ended December 31, 2022.

/s/ Warren Averett, LLC

Atlanta, Georgia

June 28, 2023