Mark Anthony Koenig (July 19, 1904 – April 22, 1993) was an American baseball shortstop who played twelve seasons in Major League Baseball (MLB). He played with the New York Yankees, Detroit Tigers, Chicago Cubs, Cincinnati Reds and New York Giants from 1925 to 1936. A switch hitter who threw right-handed, he was listed at 6 feet 0 inches (1.83 m) and 180 pounds (82 kg). Although primarily playing as a shortstop, Koenig was utilized at both second base and third base as well.