William (Bill) Thomas was inducted into the Swans Hall of Fame in 2011.
A defender, William Thomas played 135 games for South Melbourne from 1905 to 1913. At centre half-back he was one of the best on ground in the 1909 Premiership team. He was captain-coach of the Club in 1910 and 1911, and a member of the 1912 grand final side. He represented Victoria in State football on four occasions, and was captain of the State team in 1913. Following his time with the Swans, he captained Richmond, where his career was prematurely ended by a broken leg. Bill Thomas and his son Len remain the only father-son combination to have played in Premiership teams for South Melbourne and the Sydney Swans, and to be inducted into the Swans Hall of Fame.