John Patrick Tobin was an American professional baseball player who appeared in 84 games, primarily as a third baseman, during his one season in Major League Baseball for the 1945 Boston Red Sox. Born in Oakland, California, he batted left-handed, threw right-handed, and was listed as 6 feet (1.8 m) tall and 165 pounds (75 kg). His brother Jim was a major league pitcher from 1937 to 1945.