Exhibit 23
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statements No. 333-217399 and No. 333-228299 on Form S-8 of PCSB Financial Corporation of our report dated September 10, 2021, relating to the consolidated financial statements of PCSB Financial Corporation and Subsidiaries, appearing in this Annual Report on Form 10-K.
/s/ Crowe LLP
September 10, 2021
New York, New York