James Edward Zinn (January 21, 1895 – February 26, 1991) was an American professional baseball pitcher. He played all or part of four seasons in Major League Baseball (MLB) for the Philadelphia Athletics (1919), Pittsburgh Pirates (1920–22), and Cleveland Indians (1929). In five seasons he had a 13–16 win–loss record, 66 games pitched, 108 strikeouts, and a 4.30 ERA. Zinn was the winning pitcher for the first ever radio broadcast of a major league baseball game on August 5, 1921 by Pittsburgh's KDKA radio between the Pittsburgh Pirates and the Philadelphia Phillies.