Sir Anthony Ross
Donald Sinden
Prof. John Ivarsson
David Hartman
The Lawspeaker
Rolf Søder
Sven
Torsten Wahlund
Sigurd
Niels Hinrichsen
Town Guard
Denny Miller
The Factor
Brendan Dillon
French Engineer
James Almanzar
The Butler
Ivor Barry
Chief of Boat Archers
Lee Paul
Train Conductor (uncredited)
Ian Abercrombie
Pilot (uncredited)
Jackson Bostwick
Captain Brieux
Jacques Marin
Sentry (uncredited)
Herman Poppe
Oomiak
Mako
Donald Ross
David Gwillim
Freyja
Agneta Eckemyr
Gunnar
Sverre Anker Ousdal
The Godi
Gunnar Öhlund
Erik
Lasse Kolstad
Torvald
Erik Silju
Director
Robert Stevenson
Original Music Composer
Maurice Jarre
Screenplay
John Whedon
Novel
Ian Cameron
Sound Supervisor
Herb Taylor
Producer
Winston Hibler
Production Design
John B. Mansbridge
Al Roelofs
Walter H. Tyler
Peter Ellenshaw