John Grodzicki (February 26, 1917 – May 2, 1998) was an American Major League Baseball pitcher. A native of Nanticoke, Pennsylvania, he pitched for the St. Louis Cardinals in 1941, 1946 and 1947. The right-hander stood 6 feet 1 inch (1.85 m) and weighed 200 pounds (91 kg). A top pitching prospect before the outbreak of World War II, Grodzicki would pitch in 24 games (23 in a relief role) for the Cardinals, winning 2 and losing 2, with an earned run average of 4.43. He allowed 31 hits and 34 bases on balls in 402⁄3 MLB innings pitched, with 20 strikeouts.