USS Lyon County (LST-904) was an LST-542-class tank landing ship built for the United States Navy during World War II. Named after counties in Iowa, Kansas, Kentucky, Minnesota, and Nevada, she was the only U.S. Naval vessel to bear the name. Originally laid down as USS LST-904 by the Dravo Corporation of Pittsburgh, Pennsylvania on 12 November 1944; launched on 23 December 1944; sponsored by Miss Betty McCallen; and commissioned at New Orleans, Louisiana on 25 January 1945 with Lieutenant James L. Randles, Jr., in command.