SS Mission San Miguel 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 Miguel (AO-129). Later the tanker transferred to the Military Sea Transportation Service as USNS Mission San Miguel (T-AO-129). She was a Mission Buenaventura-class oiler and was named for Mission San Miguel Arcángel, located in San Miguel, California.