 | Richard Harrison als Perseo |
 | Ángel Jordán als Medusa |
| Anna Ranalli als Andromeda |
| Arturo Dominici als Akrisios |
 | Riccardo Cucciolla als (Voice dubbing for Richard Harrison) |
 | José Sepúlveda als Cefeo's counsellor |
 | Lorenzo Robledo als Prince |
| Ángela Pla als Euryale |
 | Enrique Navarro als Stheno |
 | Rufino Inglés |
 | Miguel González |
| Jose Luis Ferreiro |
| Miguel de la Riva als Prince |
| Rafael Cortés als Serifo nobleman |
 | Frank Braña als Prince |
 | Elisa Cegani als Danae |
 | Bruno Scipioni |
| Fernando Liger |
| Ángel Jordán als Alceo |
 | Roberto Camardiel als Cefeo |
 | Antonio Molino Rojo als Tarpete |
 | Leo Anchóriz als Galenore |
| Arturo Dominici als Acrisio |
| Alberto De Martino | Director |
| Fernanda Materni | Assistant Editor |
| Antonio Annunziata | Camera Operator |
| José Salvador | Still Photographer |
| Carlo Rambaldi | Special Effects |
| Mario Ligobbi | Boom Operator |
| Romolo De Martino | Makeup Artist |
| Otello Colangeli | Editor |
| Dario Di Palma | Director of Photography |
| Eloy Mella | Director of Photography |
| Emo Bistolfi | Producer |
| Mario Guerra | Screenplay |
| Luciano Martino | Screenplay |
| José Mallorquí | Story |
| Ernesto Gastaldi | Screenplay |
| Alberto De Martino | Screenplay |
| Vittorio Vighi | Screenplay |
| Mario Guerra | Story |
| Luciano Martino | Story |
| Alberto Giommarelli | Unit Manager |
| Torquato Carocci | Production Secretary |
| Rodolfo Mecacci | Production Secretary |
| Luciano Palermo | First Assistant Director |
| Franca Franco | Script Supervisor |
| Alberto Spagnoli | Assistant Camera |
| Enzo Constantini | Set Decoration |
| Umberto De Martino | Assistant Makeup Artist |
| Italia Marini | Hairstylist |
| Mario Ottavi | Sound Recordist |
| Eugenio Bava | Special Effects |
| Giorgio Ubaldi | Stunt Coordinator |
| Franco Lolli | Production Design |
| Angiolina Menichelli | Costume Design |
| Luigi Puri | Sound |
| Carlo Franci | Original Music Composer |
| Renato Tonini | Production Manager |
