EnglishGraham Chapman as King Arthur/Voice of God/Middle Head/Hiccoughing G
John Cleese as Second Swallow-Savvy Guard/The Black Knight/Peasan
Eric Idle as Dead Collector/Peasant 1/Sir Robin the Not-Quite-S
Terry Gilliam as Patsy/Green Knight/Old Man/Sir Bors/Animator
Terry Jones as Dennis's Mother/Sir Bedevere/Left Head/Voice of Ca
Michael Palin as First Swallow-Savvy Guard/Dennis/Peasant 2/Right H
Connie Booth as The Witch
Carol Cleveland as Zoot/Dingo
Neil Innes as First Monk/Singing Minstrel/Page Crushed by the Ra
Bee Duffell as Old Crone
John Young as Dead Body/Historian Frank
Rita Davies as Historian's Wife
Avril Stewart as Dr Piglet
Sally Kinghorn as Dr Winston
Mark Zycon as Prisoner
Elspeth Cameron as Girl in Castle Anthrax
Mitsuko Forstater as Girl in Castle Anthrax
Sandy Johnson as Knight of Ni Villager at witch burning Musician
Sandy Rose as Girl in Castle Anthrax
Romilly Squire as Musician at wedding Villager at witch burning
Joni Flynn as Girl in Castle Anthrax
Alison Walker as Girl in Castle Anthrax
Loraine Ward as Girl in Castle Anthrax
Anna Lanski as Girl in Castle Anthrax
Sally Coombe as Girl in Castle Anthrax
Vivienne MacDonald as Girl in Castle Anthrax
Yvonne Dick as Girl in Castle Anthrax
Daphne Darling as Girl in Castle Anthrax
Fiona Gordon as Girl in Castle Anthrax
Gloria Graham as Girl in Castle Anthrax
Judy Lams as Girl in Castle Anthrax
Tracy Sneddon as Girl in Castle Anthrax
Sylvia Taylor as Girl in Castle Anthrax
Joyce Pollner as Girl in Castle Anthrax
Mary Allen as Girl in Castle Anthrax
Julián Doyle as Police Sergeant
Charles Knode as Camp' Guard/One of Robins Minstrels
Zack Matalon as Guard who falls into barrels
William Palin as Sir Not-Appearing-in-this-Film (photograph)
Tom Raeburn as Guard Eating Apple
Roy Forge Smith as Inspector End of Film
Maggie Weston as Page turner (hand only)