Cast of Monty Python and the Holy Grail

Graham Chapman plays King Arthur, the central character in the film, and also voices the roles of the Voice of God, Middle Head, and Hiccoughing Guard.

John Cleese portrays Second Swallow-Savvy Guard, The Black Knight, Peasant 3, Sir Launcelot the Brave, Taunting French Guard, and Tim the Enchanter.

Eric Idle takes on the roles of Dead Collector, Peasant 1, Sir Robin the Not-Quite-So-Brave-as-Sir Launcelot, First Swamp Castle Guard, Concorde, Roger the Shrubber, and Brother Maynard.

Terry Gilliam plays Patsy, Green Knight, Old Man from Scene 24 (Bridgekeeper), Sir Bors, Animator, and Gorilla Hand.

Terry Jones portrays Dennis's Mother, Sir Bedevere, Left Head, Prince Herbert, and the Voice of Cartoon Scribe.

Michael Palin embodies First Swallow-Savvy Guard, Dennis, Peasant 2, Right Head, Sir Galahad the Pure, Narrator, King of Swamp Castle, Brother Maynard's Brother, and the Leader of The Knights Who Say NI!

Connie Booth appears as The Witch in the film.

Carol Cleveland takes on the roles of Zoot and Dingo.

Neil Innes plays First Monk, Singing Minstrel, Page Crushed by the Rabbit, and Peasant #4.

Bee Duffell portrays the Old Crone in the film.

John Young appears as the Dead Body and Historian Frank.

Rita Davies appears as the Historian's Wife.