SS Mission Santa Barbara 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 Santa Barbara (AO-131). Later the tanker transferred to the Military Sea Transportation Service as USNS Mission Santa Barbara (T-AO-131). She was a member of the Mission Buenaventura-class oiler and was named for Mission Santa Barbara in Santa Barbara, California.