Richard Harris
King Arthur
Vanessa Redgrave
Guenevere
Franco Nero
Lancelot Du Lac
David Hemmings
Mordred
Lionel Jeffries
King Pellinore
Laurence Naismith
Merlyn
Pierre Olaf
Dap
Estelle Winwood
Lady Clarinda
Gary Marshal
Sir Lionel
Anthony Rogers
Sir Dinadan
Peter Bromilow
Sir Sagramore
Sue Casey
Lady Sybil
Gary Marsh
Tom of Warwick
Nicolas Beauvy
King Arthur as a Boy
Fredric Abbott
Sir Geoffrey (uncredited)
Robert B. Shepard
Soldier (uncredited)
Michael Kilgarriff
Sir Paul (uncredited)
Frank Baker
Priest (uncredited)
Buddy Bryan
Dancer (uncredited)
Lorinne Crawford
Dancer (uncredited)
Leon Greene
Sir Turloc (uncredited)
Lars Hensen
Minor Role (uncredited)
Walter Kightly
Knight of the Round Table (uncredited)
John Hugh McKnight
Nobleman (uncredited)
Christopher Riordan
Serf at Execution (uncredited)
Kay Tapscott
Dancer (uncredited)