William Clifford
William Clifford may refer to:
- William Clifford , English Roman Catholic theologian
- William Clifford , English cricketer
- William H. Clifford, Ohio politician
- W. H. Clifford, writer, director, and film company head
- William Clifford , American actor of the silent era
- William Clifford , English prelate of the Roman Catholic Church
- William Kingdon Clifford, mathematician and philosopher
- William Clifford Heilman, American composer
- Billy Clifford, American professional soccer player
- Billy Clifford , English professional footballer
- Bill Clifford , American middle-distance runner, 1947 NCAA 800 m winner for the Ohio State Buckeyes track and field team
- Bill Clifford , sprinter, 1938 100 m All-American for the Notre Dame Fighting Irish track and field team