John Costa Rizzo (July 30, 1912 – December 4, 1977) was an American outfielder in Major League Baseball from 1938 to 1942. Rizzo set the Pittsburgh Pirates record for most home runs in a season, with 23 in his rookie year of 1938. As of 2008, Rizzo still holds the Pirates record for most RBIs in a game, with nine. Rizzo played the entire 1941 season for the Phillies, finishing with a .217 average and four home runs in 99 games. After the season, he was purchased by the Brooklyn Dodgers on December 10, 1941, from Philadelphia.