Directed by
| Luigi Cozzi | ||
| Ishirô Honda | ||
| Terry O. Morse | ||
| Kurt Neumann | ... | (original material) |
| Motoyoshi Oda | ... | (original material) |
| Val Guest | ... | (earlier film clips) (uncredited) |
| Eugène Lourié | ... | (earlier film clips) (uncredited) |
| Arthur Penn | ... | (earlier film clips) (uncredited) |
Writing Credits
| Takeo Murata | ... | (original screenplay) & |
| Ishirô Honda | ... | (original screenplay) |
| Luigi Cozzi | ... | (story editor) (uncredited) |
| Shigeru Kayama | ... | (original story) |
| Tomoyuki Tanaka | ... | (story "The Giant Monster from 20, 000 Leagues Under The Sea") |
| Al C. Ward | ... | (adaptation) (uncredited) |
Cast
Produced by
| Renato Barbieri | ... | executive producer |
| Edward B. Barison | ... | US Material (uncredited) |
| Luigi Cozzi | ... | executive producer |
| Richard Kay | ... | US Material (uncredited) |
| Joseph E. Levine | ... | US Material (uncredited) |
| Iwao Mori | ... | executive producer (uncredited) |
| Harry Rybnick | ... | US Material (uncredited) |
| Tomoyuki Tanaka | ... | producer |
| Terry Turner | ... | US Material (uncredited) |
Music by
| Franco Bixio | ... | (as Magnetic System) |
| Fabio Frizzi | ... | (as Magnetic System) |
| Akira Ifukube | ||
| Vince Tempera | ... | (as Magnetic System) |
Cinematography by
| Guy Roe | ||
| Masao Tamai | ||
Editing by
| Alberto Moro | ||
Production Design by
| Satoru Chûko | ||
Art Direction by
| Satoru Chûko | ||
| Takeo Kita | ||
Set Decoration by
| George Rohr | ||
Second Unit Director or Assistant Director
| Ira Webb | ... | assistant director |
Art Department
| Giuseppe Festino | ... | graphic artist |
| Teizô Toshimitsu | ... | special effects suit designer (uncredited) |
Sound Department
| Hisashi Shimonaga | ... | sound |
| Arthur B. Smith | ... | sound |
Special Effects by
| Kaimai Eizo | ... | special effects |
| Kyuichirô Kishida | ... | special photographic effects |
| Hiroshi Mukoyama | ... | special photographic effects |
| Eiji Tsuburaya | ... | special photographic effects |
| Akira Watanabe | ... | special photographic effects |
Visual Effects by
| Sadao Iizuka | ... | creator of Godzilla's atomic breath |
Camera and Electrical Department
| Guy Roe | ... | cameraman: American footage |
| Masao Tamai | ... | cameraman |
Editorial Department
| Terry Morse Jr. | ... | assistant editor (uncredited) |
Script and Continuity Department
| Lillo Capoano | ... | script supervisor |
Additional Crew
| Emilio Cigoli | ... | voice dubbing: Raymond Burr |
| Vittorio Cramer | ... | voice dubbing: Mikel Conrad (as Vittorio Kramer) |
| Franco Foco | ... | consultant: archive material |
| Pino Locchi | ... | voice dubbing: Policeman, Ywanga |
| Giovanni Mongini | ... | consultant: archive material |
| Giuseppe Rinaldi | ... | voice dubbing: Akira Takarada |
| Rita Savagnone | ... | voice dubbing: Momoko Kochi |
| Armando Valcauda | ... | special colorization effects |
| Luigi Valerio | ... | consultant: archive material |
