Akira Kubo as Taro Kudo

Yukiko Kobayashi as Saki, native girl

Atsuko Takahashi as Ayako Hoshino

Yoshio Tsuchiya as Dr. Kyoichi Mida

Tetsu Nakamura as Chieftain Ombo

Sachio Sakai as The Editor (uncredited)

Kenji Sahara as Makoto Obata

Yū Fujiki as Promotion Division Manager (uncredited)

Noritake Saito as Rico, the guide (uncredited)

Chōtarō Tōgin as Yokoyama, an agent (uncredited)

Wataru Ōmae as Sakura (uncredited)

Yukihiko Gondō as Islander (uncredited)

Shigeo Katō as Islander (uncredited)

Rinsaku Ogata as Islander (uncredited)

Yûko Sugihara as Stewardess (uncredited)

Haruo Nakajima as Gezora/Ganimes

Haruyoshi Nakamura as Kamoebas