Louis Stephen Klimchock (born October 15, 1939) is an American former professional baseball infielder. He played parts of 12 seasons in Major League Baseball (MLB) for the Kansas City Athletics, Milwaukee Braves, Washington Senators, New York Mets and Cleveland Indians. Primarily a third baseman and second baseman, Klimchock batted left-handed and threw right-handed. He was listed as 5 feet 11 inches (1.80 m) tall and 180 pounds (82 kg).