Discover
Todd Armstrong
Jason
Nancy Kovack
Medea
Gary Raymond
Acastus
Laurence Naismith
Argos
Niall MacGinnis
Zeus
Michael Gwynn
Hermes
Douglas Wilmer
Pelias
Jack Gwillim
King Aeetes
Honor Blackman
Hera
John Cairney
Hylas
Patrick Troughton
Phineas
Andrew Faulds
Phalerus
Nigel Green
Hercules
John Crawford
Polydeuces (uncredited)
Ferdinando Poggi
Castor of Sparta (uncredited)
Ennio Antonelli
Dmitrius, Drummer on Argo (uncredited)
Harold Bradley
Guard in Palace (uncredited)
Aldo Cristiani
Lynceus (uncredited)
Eva Haddon
Medea (voice) (uncredited)
Doug Robinson
Eupaemus (uncredited)
Davina Taylor
Briseis (uncredited)
Tim Turner
Jason (voice) (uncredited)
Art
Geoffrey Drake
Production Design
Herbert Smith
Art Direction
Jack Maxsted
Art Direction
Tony Sarzi-Braga
Art Direction
James Wines
Title Designer
Editing
Maurice Rootes
Editor
Production
Charles H. Schneer
Producer
Ray Harryhausen
Associate Producer
John Dark
Production Executive
Leonardo Scavino
Unit Manager
Jimmy Komisarjevsky
Unit Manager
Paul Maslansky
Unit Manager
Sound
Bernard Herrmann
Original Music Composer
Cyril Collick
Sound Recordist
Red Law
Sound Recordist
Alfred Cox
Sound Editor
Bernard Herrmann
Conductor