The 68th Air Refueling Squadron is an inactive United States Air Force unit. Its was last assigned to the 305th Bombardment Wing at Bunker Hill Air Force Base, Indiana, where it was inactivated on 25 March 1965. The earliest predecessor of the squadron was the 468th Bombardment Squadron, which served as a heavy bombardment training unit until it was disbanded in a reorganization of United States Army Air Forces units in the United States designed to conserve manpower needed in the overseas theaters.