Lisa Stephens Disbrow is the former United States Under Secretary of the Air Force. From January 20 to May 16, 2017, she served as the Acting United States Secretary of the Air Force until Heather Wilson assumed the office. Previously, Disbrow served as Acting Under Secretary of the Air Force from January 2015 until she was confirmed by the Senate as the Under Secretary in January 2016. She was also confirmed by the Senate and served as the Assistant Secretary of the Air Force for Financial Management and Comptroller from 2014 to 2016. She currently serves as a member of the President's Export Council.

The under secretary of the Air Force, sometimes referred to as the under secretary of the Department of the Air Force, is the second-highest ranking civilian official in the Department of the Air Force of the United States of America, serving directly under the secretary of the Air Force. In the absence of the secretary, the under secretary exercises all the powers and duties of the secretary and serves as acting secretary when the position of secretary is vacant. The under secretary of the Air Force is appointed by the President, by and with the advice and consent of the Senate.