Power of Attorney for Director Ryan Nolan

This filing concerns a Power of Attorney granted by Ryan Nolan, a director at Booz Allen Hamilton Holding Corporation, to his attorneys-in-fact: Jacob D. Bernstein, Susanna Patton, Joshua Petty, and Jamie Weatherby. The purpose of this Power of Attorney is to allow the attorneys-in-fact to execute and file all necessary Forms 3, 4, and 5 on behalf of Mr. Nolan, in accordance with Section 16(a) of the Securities Exchange Act of 1934. This authorization covers the execution of the forms, any amendments, and timely filing with the SEC and relevant stock exchanges. The Power of Attorney remains in effect until Mr. Nolan is no longer required to file these forms or until it is revoked in writing. Mr. Nolan acknowledges that neither the attorneys-in-fact nor the Company assume his compliance responsibilities under Section 16.