USS Mount Vernon (AP-22) was a troop transport that served with the United States Navy during World War II. Prior to her military service, she was a luxury ocean liner named SS Washington. Washington was launched in May 1933 by the New York Shipbuilding Company of Camden, New Jersey, and operated as a passenger liner from New York City to Plymouth, England, and Hamburg, Germany. Renamed Mount Vernon 6 June 1941, the liner was acquired by the Navy 16 June 1941 and commissioned at the Philadelphia Navy Yard the same day, Captain Donald B. Beary in command.