The 4th Air Division is an inactive United States Air Force unit. Its last assignment was with Fifteenth Air Force, stationed at Francis E. Warren Air Force Base, Wyoming. It was inactivated on 23 August 1988.

The 44th Missile Wing is an inactive United States Air Force unit. Its last assignment was with Twentieth Air Force, being assigned to Ellsworth AFB, South Dakota. It was inactivated on 4 July 1994.