Donald Ray Lash (August 15, 1912 – September 19, 1994) was an American long-distance runner who won 12 national titles from 1934 to 1940, including seven consecutive men's national cross-country championships, and who set a world's record for the two-mile run in 1936. In 1938, Lash set a meet record of 14 min., 39 sec., for 5,000 meters at the Amateur Athletic Union indoor national championships. That same year he won the James E. Sullivan Award as the nation's top amateur athlete. Don Lash Park in Auburn is named for him. Lash was inducted into the USA Track and Field Hall of Fame in 1995.