Mark Williams (gebore 22 Augustus 1959) is 'n Engelse akteur en skrywer. Hy is bekend vir sy rolle in die rolprente Shakespeare in Love (1998), Harry Potter and the Chamber of Secrets (2002), Harry Potter and the Goblet of Fire (2005), en Harry Potter and the Half-Blood Prince (2009).
- 1997: The Borrowers
- 1998: Shakespeare in Love
- 2001: High Heels and Low Lifes
- 2002: Harry Potter and the Chamber of Secrets
- 2005: Harry Potter and the Goblet of Fire
- 2009: Harry Potter and the Half-Blood Prince
- 2017: Heidi: Queen of the Mountain
- 2017: Harry Potter: A History of Magic
- Chocolate Cake
- The Dark Channel
- 1988: Alexei Sayle's Stuff
- 1992: Bunch of Five
- 1994: The Fast Show
- 2000: The Strangerers
- 2001: Jumpers for Goalposts
- 2002: Industrial Revelations
- 2003: Grass
- 2003: Star
- 2004: Carrie & Barry
- 2005: Help
- 2005: The World's Strangest UFO Stories
- 2013: Blandings
- 2013: Father Brown
- 2013: Britain's Secret Homes
- 2014: The Link
- 1995: The Big Game
- 1999: You Ain't Seen All These, Right?
- 2001: Combat Sheep
- 2002: I Love the 100 Best Top Ten Lists of the Fast Show Ever!
- 2003: The Fast Show Farewell Tour
- 2006: Viva Blackpool
- 2009: Steve Coogan: The Inside Story
- 2003: Interviews with Professors & More
