Daniel John Fortmann (April 11, 1916 – May 23, 1995) was an American professional football player who was a guard and linebacker for the Chicago Bears in the National Football League (NFL). He played college football at Colgate University. Playing for Chicago from 1936 to 1943, he was selected as an All-Pro for seven consecutive years from 1937 to 1943. He was the Bears' team captain starting in 1940 and led the team to NFL championships in 1940, 1941, and 1943.
