María Callas
Medea
Massimo Girotti
Creonte
Laurent Terzieff
Chirone
Giuseppe Gentile
Giasone
Margareth Clémenti
Glauce
Paul Jabara
Pelias
Sergio Tramonti
Apsirto, Medea's Brother
Annamaria Chio
Wet Nurse
Piera Degli Esposti
Woman
Mirella Pamphili
Rossana Canghiari
Servant of Glauce (uncredited)
Maria Cumani Quasimodo
(uncredited)
Rita Savagnone
Voice Dubbing: Maria Callas / Medea (voice) (uncredited)
Pino Colizzi
Voice Dubbing: Giuseppe Gentile / Jason (voice) (uncredited)
Enrico Maria Salerno
Voice Dubbing: Laurent Terzieff / Centaur (voice) (uncredited)
Gerard Weiss
Second Centaur
Luigi Barbini
Argonaut
Gian Paolo Durgar
Luigi Masironi
Jason at 5
Michelangelo Masironi
Jason at 13
Gianni Brandizi
Argonaut
Franco Jacobbi
Argonaut
Graziella Chiarcossi
Glauce's Maid
Vladimer Julukhadze
(uncredited)
Maria Smith
Maid (uncredited)
Giorgio Trombetti
(uncredited)