Cast
Todd Armstrong
Jason
Nancy Kovack
Medea
Gary Raymond
Acastus
Laurence Naismith
Argos
Niall MacGinnis
(1913–1977)
Zeus
Michael Gwynn
Hermes
Douglas Wilmer
Pelias
Jack Gwillim
(1909–2001)
King Aeetes
Honor Blackman
Hera
John Cairney
Hylas
Patrick Troughton
(1920–1987)
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)
Davina Taylor
Briseis (uncredited)
Tim Turner
Jason (voice) (uncredited)
Directing
Don Chaffey
Director
Writing
Jan Read
Screenplay
Beverley Cross
Screenplay
Art
Herbert Smith
Art Direction
Jack Maxsted
Art Direction
Geoffrey Drake
Production Design
Camera
Wilkie Cooper
Director of Photography
Harry Gillam
Camera Operator
Crew
Apollonios Rhodios
Poem
Eddie Powell
Stunts
Production
Charles H. Schneer
Producer
Ray Harryhausen
Associate Producer
Paul Maslansky
Unit Manager
Jimmy Komisarjevsky
Unit Manager
John Dark
Production Executive
Leonardo Scavino
Unit Manager
Editing
Maurice Rootes
Editor
Sound
Bernard Herrmann
Conductor
Cyril Collick
Sound Recordist
Red Law
Sound Recordist
Alfred Cox
Sound Editor