SS Mission San Gabriel was a Type T2-SE-A2 tanker built for the United States Maritime Commission during World War II. After the war she was acquired by the United States Navy as USS Mission San Gabriel (AO-124). Later the tanker transferred to the Military Sea Transportation Service as USNS Mission San Gabriel (T-AO-124). She was a member of the Mission Buenaventura-class oiler and was named for the Mission San Gabriel Arcángel, she was the only U.S. Naval vessel to bear the name.