USNS Potomac (T-AO-150) was a United States Navy Maumee-class oiler in non-commissioned service with the Military Sea Transportation Service, later Military Sealift Command, from 1957 to 1961. Potomac, fifth U.S. Navy ship to bear the name, was laid down at Sun Shipbuilding and Drydock Company at Chester, Pennsylvania,on 9 June 1955 and launched on 8 October 1956, sponsored by Mrs. T. H. Robbins, Jr. She entered non-commissioned U.S. Navy service under the control of the Military Sea Transport Service (MSTS) with a primarily civilian crew on 30 January 1957.