- Name: Mark Williams
- Date of Birth: 1959-8-22
- Place of Birth: Bromsgrove , Worcestershire , England , UK
- Height: 6' 1" (1.85 m)
Mark Williams was born on August 22, 1959 in Bromsgrove, Worcestershire, England. He is an actor and writer, known for Harry Potter and the Goblet of Fire (2005), Harry Potter and the Chamber of Secrets (2002) and Harry Potter and the Prisoner of Azkaban (2004). He is married to Dianne Williams. They have one child.