USNS Petrolite (T-AO-164) was a Suamico-class T2 tanker laid down on 12 October 1943 under Maritime Commission contract (MC hull 1723). The ship was built at Sun Shipbuilding and Drydock Co. in Chester, Pennsylvania (hull number 390). Launched on 13 January 1944; the ship was delivered to the United States Navy at Philadelphia Naval Shipyard on 31 January 1944.