USS Jupiter (AK-43) was an Aldebaran-class cargo ship commissioned by the U.S. Navy for service in World War II. She was responsible for delivering necessary goods and equipment to ships and stations in the war zone. Jupiter (AK-43) was built in 1939 as SS Flying Cloud by Federal Shipbuilding & Drydock Co., Kearny, New Jersey; she was later renamed SS Santa Catalina, She was acquired by the Navy 19 June 1941; the next day renamed Jupiter; and commissioned 22 August 1942, Lt. Comdr. D. S. Baker in command.