Obsada

• Clive Owen — Arthur
• Ioan Gruffudd — Lancelot
• Keira Knightley — Guinevere
• Mads Mikkelsen — Tristan
• Joel Edgerton — Gawain
• Hugh Dancy — Galahad
• Ray Winstone — Bors
• Ray Stevenson — Dagonet
• Stellan Skarsgård — Cerdic
• Til Schweiger — Cynric
• Stephen Dillane — Merlin
• Ken Stott — Marius Honorius
• Sean Gilder — Jols
• Charlie Creed-Miles — Ganis
• Phelim Drew — Obnoxius Monk
• David Wilmot — Woad Killed by Lancelot
• Lochlainn O'Mearain — Roman Commander
• Graham McTavish — Roman Officer
• Elliot Henderson-Boyle — Young Lancelot
• David Murray — Merlin's Lieutenant
• Ned Dennehy — Mental Monk
• Bosco Hogan — Bishop Decoy
• Ivano Marescotti — Bishop Germanus
• Clive Russell — Lancelot's Father
• Stefania Orsola Garello — Fulcinia