Jack Wally McMahan (July 25, 1932 – October 16, 2020) was a right-handed batting, left-handed throwing Major League Baseball pitcher who played in 1956 for the Pittsburgh Pirates and Kansas City Athletics. McMahan attended University of Arkansas at Little Rock. Originally signed by the New York Yankees prior to the 1952 season, McMahan was drafted by the Pirates from the Yankees in the 1955 Rule 5 draft. McMahan died on October 16, 2020.