Patrick William Donahue (November 8, 1884 – January 31, 1966) was an American professional baseball player who was a catcher in Major League Baseball (MLB). He started playing professional baseball in 1902 in the minor leagues when he was only 17. He played as a catcher and first baseman. In the three years he played major league baseball, he only hit three home runs. He played for the Boston Red Sox, Philadelphia Athletics and the Cleveland Naps. His brother, also a pro baseball player, was Jiggs Donahue.