Jack Dyer Crouch II (born July 1, 1958) is a former American federal government official and academic. Since 2014 he has been president and chief executive officer (CEO) of United Service Organizations (USO).
Crouch was educated at the University of Southern California, located in Los Angeles, California, where he received a bachelor's degree, master's degree, and a Ph.D. in international relations.
Between 1984 and 1986, he worked in the Arms Control and Disarmament Agency for the Assistant Director for Strategic Programs and served as an advisor to the United States / Soviet Union Nuclear and Space Arms Talks.
Between 1986 and 1990, he was military legislative assistant to U.S. Senator from Wyoming Malcolm Wallop.
From 1990 to 1992, he served in the administration of U.S. President George H. W. Bush as the Principal Deputy Assistant Secretary of Defense for International Security Policy.
From 1993 to 2001, Crouch was Associate Professor of Defense and Strategic Studies at Southwest Missouri State University, located in Springfield, Missouri. He was a member of the board of editors of Comparative Strategy and a member of the board of advisors of the Center for Security Policy. While at Missouri, he also served as a reserve deputy sheriff in Christian County.
He was appointed Deputy National Security Advisor by U.S. President George W. Bush in March 2005. He previously served as the U.S. Ambassador to Romania (2004–2005) and as an Assistant Secretary of Defense for International Policy, among other positions in government under Republican administrations.