Kenji Murai - Professor
Akira Kubo
Mami Sekiguchi - Singer
Kumi Mizuno
Police Personnel (uncredited)
Akio Kusama
Kazuo Higata
Katsumi Tezuka
Matango
Haruo Nakajima
Skulking Transitional Matango (uncredited)
Hideyo Amamoto
Tokio Ôkawa
Kōji Uruki
Masaki Shinohara
Transitional Matango (uncredited)
Kuniyoshi Kashima
Toku Ihara
Naoyuki Sakuta - Skipper
Hiroshi Koizumi
Nurse (uncredited)
Mitsuko Hayashi
Tsurue Ichimanji
Senzô Koyama - Sailor
Kenji Sahara
Etsurô Yoshida - Writer
Hiroshi Tachikawa
Masafumi Kasai - Owner
Yoshio Tsuchiya
Akiko Sôma - Student
Miki Yashiro
Doctor (as Jirô Kumagai) (uncredited)
Takuzō Kumagai
Doctor (uncredited)
Yutaka Oka
Keisuke Yamada
Special Effects Assistant
Teruyoshi Nakano
Producer
Tomoyuki Tanaka
Screenplay
Takeshi Kimura
Assistant Director
Koji Kajita
Director
Ishirō Honda
Special Effects Supervisor
Eiji Tsuburaya
Special Effects
Visual Effects
Adaptation
Shinichi Hoshi
Masami Fukushima
Costume Design
Shigeru Komatsuzaki
Production Manager
Tadashi Koike
Keizô Murase
Kaimai Eizo
Special Effects Manager
Shigeru Nakamura
Sound Recordist
Fumio Yanoguchi
Akira Watanabe
Sound Effects
Minoru Kaneyama
Original Music Composer
Sadao Bekku
Director of Photography
Hajime Koizumi
Production Design
Shigekazu Ikuno
Editor
Reiko Kaneko
Art Direction
Sound Mixer
Hisashi Shimonaga
Original Story
William Hope Hodgson
Lighting Technician
Seishichi Kojima