The 320th Air Refueling Squadron is an inactive United States Air Force unit. It was last assigned to the 22d Bombardment Wing at March AFB, California, where it was inactivated on 15 September 1962. The squadron had its roots during World War II, when the 320th Transport Squadron (Cargo & Mail) was activated as an airlift support unit for VIII Air Force Service Command in England. The squadron moved to the continent in the fall of 1944 and became an element of the 302d Transport Wing, supporting combat and occupation forces until it was inactivated in the fall of 1945.