Mark Williams is known for his role as Arthur Weasley in the movies "Harry Potter and the Chamber of Secrets (2002)", " Harry Potter and the Prisoner of Azkaban (2004)", "Harry Potter and the Goblet of Fire (2005)", "Harry Potter and the Order of the Phoenix (2007)", "Harry Potter and the Half-Blood Prince (2009)", "Harry Potter and the Deathly Hallows: Part 1 (2010)" and "Harry Potter and the Deathly Hallows: Part 2 (2011)".

Some other movies he appeared in are "Privileged (1982)", "High Season (1987)", "Out of Order (1987)", "Tumbledown (1988)", "Coppers (1988)", "Bad Company (1993)", "Royal Deceit (1994)", "101 Dalmatians (1996)", "The Borrowers (1997)", "Shakespeare in Love (1998)", "Hunting Venus (1999)", "Whatever Happened to Harold Smith? (1999)", "High Heels and Low Lifes (2001)", "The Finl Curtain (2002)", "Anita & Me (2002)", "Agent Cody Banks 2: Destination London (2004)", "Tristram Shandy: A Cock and Bull Story (2005)", "Viva Blackpool (2005)", "Stardust (2007)", "A Room with a View (2007)", "Blood in the Water (2009)", "Frankenstein's Wedding... Live in Leeds (2011)", "Albert Nobbs (2011)", "Flutter (2011)" and "Golden Years (2016)".

He played Father Brown on the BBC TV show "Father Brown (2013-)".

Some other TV shows he appeared on are "The Storyteller", "Red Dwarf", "Making Out", "Alexei Sayle's Stuff", "Great Expectations", "Bottom", "Merlin of the Crystal Cave", "Bunch of Five", "Kinsey", "Casualty", "Health and Efficiency", "Peak Practice", "The Smell of Reeves and Mortimer", "Searching", "In Exile", "Gormenghast ", "The Strangerers", "Comedy Lab", "Shackleton", "Grass", "The Rotters' Club", "Carrie & Barry", "Sense & Sensibility", "Agatha Christie's Marple", "Inspector George Gently", "New Tricks", "Merlin", "The Indian Doctor", "Little Crackers", "Hustle", "Being Human", "Doctor Who", "Blandings", "The Musketeers", "Drunk History: UK", "Still Open All Hours" and "Hospital People".

Happy Birthday!