Joseph Hilarian Hatten (November 7, 1916 – December 16, 1988) was a Major League Baseball pitcher. Hatten started in pro ball with Crookston in the old Northern League in 1937. Acquired by the Montreal Royals from the Minneapolis Millers of the American Association in the 1941–42 off-season, Hatten pitched for the Royals briefly in 1942 before entering the U.S. Navy. Upon his discharge four years later, he first saw service with the Brooklyn Dodgers. Possessing a "rubber arm", Hatten worked as both a starting pitcher and a reliever, even appearing in both ends of a double-header.