USS Greer County (LST-799) was a LST-542-class tank landing ship (LST) built for the United States Navy during World War II. She was named for Greer County, Oklahoma on 1 July 1955, and the only U.S. Naval vessel to bear the name. Originally laid down as LST-799 by the Jeffersonville Boat & Machine Company of Jeffersonville, Indiana on 25 August 1944; launched on 3 October, sponsored by Miss Mary R. Whalen; and commissioned at New Orleans, Louisiana on 21 October 1944, with Lieutenant Daniel C. Millet in command.