Kirk Douglas

Einar

Tony Curtis

Eric

Ernest Borgnine

Ragnar

Janet Leigh

Morgana

James Donald

Lord Egbert

Alexander Knox

Father Godwin

Maxine Audley

Enid

Frank Thring

Aella

Eileen Way

Kitala

Edric Connor

Sandpiper

Dandy Nichols

Bridget

Per Buckhøj

Bjorn

Peter Capell

Minor Role (uncredited)

Kelly Curtis

Young Girl (uncredited)

Georges Guéret

Viking Warrior (uncredited)

Rico López

Viking Warrior (uncredited)

Marco Perrin

Extra (uncredited)

Paul Préboist

Extra (uncredited)

Orson Welles

Narrator (voice) (uncredited)