USAT Liberty was a United States Army cargo ship torpedoed by I-66 in January 1942 and beached on the island of Bali, Indonesia.

Liberty was launched on 19 June 1918 by the Federal Shipbuilding Company in Kearny, New Jersey, and acquired by the United States Navy on 7 October 1918 and commissioned the same day.

Assigned to the Naval Overseas Transportation Service, Liberty departed the New York Navy Yard on 24 October 1918, arriving at Brest, France, with her cargo of horses on 8 November.

Over the next 6 months, Liberty made two additional cruises from New York to France discharging both animal and general cargo at French ports.

In 1963 the tremors associated with the eruption of Mount Agung caused the vessel to slip off the beach, and she now lies on a sand slope in 25 to 100 feet (7.6 to 30.5 m) of water, providing one of the most popular dive sites off Bali.