Harold "Hal" Schacker (April 6, 1925 – October 2, 2015) was a Major League Baseball pitcher who appeared in six games, all in relief, for the Boston Braves in 1945. At the age of 20, the 6 ft 0 in (1.83 m), 190 lb (86 kg) right-hander was the tenth-youngest player to appear in a National League game that season. He was born in Brooklyn, New York, and was Jewish.