Patrick Joseph Murphy is an American politician and attorney who served as the 32nd United States Under Secretary of the Army. He was the first veteran of the Iraq War to be elected to the United States House of Representatives, representing Pennsylvania's 8th congressional district from 2007 to 2011. Murphy is a former anchor of Taking the Hill on MSNBC. Murphy is currently on the faculty of Wharton Business School and the Distinguished Chair of Innovation at the United States Military Academy.

The United States under secretary of the Army is the second-highest-ranking civilian official of the United States Department of the Army, serving directly under the United States Secretary of the Army. The Secretary and Under Secretary, together with two military officers, the Chief of Staff of the United States Army and the Vice Chief of Staff of the United States Army, constitute the senior leaders of the United States Army.