- Will Zahrn (4 movies)
- Willam Belli (1 movie)
- Willeke van Ammelrooy (1 movie)
- Willem Dafoe (20 movies)
- Willi One Blood (2 movies)
- William "Bucky" Bailey (1 movie)
- William "Will" Daubert (1 movie)
- William 'Shorty' Young (1 movie)
- William Addy (1 movie)
- William Alyn Hill (1 movie)
- William Armstrong (2 movies)
- William Ash (1 movie)
- William Atherton (4 movies)
- William Atkinson (1 movie)
- William B. Davis (1 movie)
- William B. Kaplan (1 movie)
- William Baldwin (1 movie)
- William Belleau (3 movies)
- William Bogert (1 movie)
- William Bozier (1 movie)
- William Bronder (1 movie)
- William Bryant (1 movie)
- William Calvert (1 movie)
- William Coke (1 movie)
- William Conrad (1 movie)
- William Converse-Roberts (2 movies)
- William Cowboy Reed (2 movies)
- William Creamer (1 movie)
- William Cross (1 movie)
- William D'Ambra (1 movie)
- William Daniels (1 movie)
- William Davidson (1 movie)
- William Devane (2 movies)
- William Duff-Griffin (1 movie)
- William English (1 movie)
- William Fair (1 movie)
- William Ferguson (1 movie)
- William Fichtner (7 movies)
- William Forsythe (1 movie)
- William Fowle (1 movie)
- William Francis McGuire (1 movie)
- William Frasca (2 movies)
- William Fuller (1 movie)
- William G. Schilling (1 movie)
- William Goodrum (1 movie)
- William Graeff Jr. (1 movie)
- William Gross (1 movie)
- William Guirola (1 movie)
- William H. Macy (6 movies)
- William Haze (1 movie)