Cleneth Eugene Markland (December 26, 1919 – June 15, 1999) was an American Major League Baseball infielder. Nicknamed "Mousey", he appeared in five games for the Philadelphia Athletics during the outset of the 1950 season, but had a nine-year, 1,169-game career in minor league baseball. The native of Detroit, Michigan, stood 5 feet 10 inches (1.78 m) tall and weighed 160 pounds (73 kg). He threw and batted right-handed. He then returned to the minor leagues for the rest of 1950 and all of 1951 before leaving the game.