William Joseph Folk (July 11, 1927 – April 21, 1976) was a Canadian professional ice hockey defenceman who played 12 games in the National Hockey League for the Detroit Red Wings during the 1951–52 and 1952–53 seasons. The rest of his career, which lasted from 1947 to 1966, was spent in the minor leagues. He died after a long illness in 1976, at the age of 48.