James Arthur McKnight (June 1, 1936 – February 24, 1994) was an American professional baseball player whose career lasted for 18 seasons (1955–1972). He appeared in 63 games in Major League Baseball as a third baseman, outfielder and pinch hitter in 1960 and 1962 for the Chicago Cubs. McKnight threw and batted right-handed, stood 6 feet 1 inch (1.85 m) tall and weighed 185 pounds (84 kg). He was traded to the Milwaukee Braves during the off-season, and spent ten additional seasons in minor league baseball, including six with the Phoenix Giants of the Pacific Coast League.