Einar, brutal son of the viking Ragnar and future heir to his throne, tangles with clever slave Eric, for the hand of a beautiful English maiden.
| Actor | Role |
|---|---|
 Kirk DouglasEinar | Einar |
 Tony CurtisEric | Eric |
 Ernest BorgnineRagnar | Ragnar |
 Janet LeighMorgana | Morgana |
 James DonaldLord Egbert | Lord Egbert |
 Alexander KnoxFather Godwin | Father Godwin |
 Maxine AudleyEnid | Enid |
 Frank ThringAella | Aella |
 Eileen WayKitala | Kitala |
 Edric ConnorSandpiper | Sandpiper |
 Dandy NicholsBridget | Bridget |
 Per BuckhøjBjorn | Bjorn |
| AAlmut BergPigtails (uncredited) | Pigtails (uncredited) |
 Peter CapellMinor Role (uncredited) | Minor Role (uncredited) |
| BBill CummingsViking Warrior (uncredited) | Viking Warrior (uncredited) |
 Kelly CurtisYoung Girl (uncredited) | Young Girl (uncredited) |
| PPeter DouglasYoung Boy (uncredited) | Young Boy (uncredited) |
 Georges GuéretViking Warrior (uncredited) | Viking Warrior (uncredited) |
 Rico LópezViking Warrior (uncredited) | Viking Warrior (uncredited) |
 Marco PerrinExtra (uncredited) | Extra (uncredited) |
 Paul PréboistExtra (uncredited) | Extra (uncredited) |
 Orson WellesNarrator (voice) (uncredited) | Narrator (voice) (uncredited) |