William Sadler (gebore 13 April 1950) is 'n Amerikaanse akteur en regisseur. Hy is bekend vir sy rolle in die rolprente Bill & Ted's Bogus Journey (1991), The Shawshank Redemption (1994), The Mist (2007), en Iron Man 3 (2013).
- 1990: Hard to Kill
- 1991: Bill & Ted's Bogus Journey
- 1992: Trespass
- 1993: Freaked
- 1994: The Shawshank Redemption
- 1995: Tales from the Crypt: Demon Knight
- 1996: Solo
- 1997: RocketMan
- 1998: Reach the Rock
- 2001: Skippy
- 2005: Purple Heart
- 2006: Jimmy and Judy
- 2006: Unspoken
- 2006: The Good Student
- 2007: The Mist
- 2007: Abandoned in the Arctic
- 2009: Last Day of Summer
- 2010: Mineville
- 2011: Silent But Deadly
- 2011: Red & Blue Marbles
- 2012: See Girl Run
- 2013: Iron Man 3
- 2013: Riddle
- 2013: The Suspect
- 2014: The Historian
- 2015: Nothing Sacred
- 2015: Ava's Possessions
- 2016: The Hollow
- 2018: Living Among Us
- 2018: The Hollywood Experience
- 2019: Alice Fades Away
- Bill & Ted Face the Music
- The Gathering
- The Drifter
- Comes an Angel
- The Final Curtain: The Last Days of Ed Wood, Jr.
- Deadly Crush
- 1985: Assaulted Nuts
- 1987: Private Eye
- 1989: Gideon Oliver
- 1989: Tales from the Crypt
- 1999: Roswell
- 2004: Wonderfalls
- 2007: Traveler
- 1988: Cadets
- 1992: Two-Fisted Tales
- 1992: The Making of 'Trespass'
- 1994: Bermuda Grace
- 1995: The Omen
- 2013: Gilded Lilys
- 2013: Onion News Empire
- 1990: Die Hard 2: The Bad Guys - Villains' Profile
- 1990: Die Hard 2: Interview with Renny Harlin
- 1992: Trespass: Behind the Scenes
- 2004: The Shawshank Redemption: Cast Interviews
- 2005: Devour
- 2009: The Hills Run Red
- 2015: Under Siege: The Making of Demon Knight
- 2016: Bill & Ted Go to Hell
- 2017: Fool's Gold: An Interview with William Sadler
