The 15th Air Transport Squadron is an inactive United States Air Force unit. Its last was assigned to the 1607th Air Transport Wing, Military Air Transport Service, stationed at Dover Air Force Base, Delaware. It was inactivated on 1 January 1965. During World War II the squadron was active from 1942 to 1943. It was disbanded when Air Transport Command disbanded its squadrons and groups and replaced them with numbered stations. The squadron was reconstituted in 1952 and served for the next thirteen years as a heavy airlift unit on the east coast of the United States.