- Raymond Burr
- Steve Martin
- Keiju Kobayashi
- Prime Minister Mitamura
- Ken Tanaka
- Goro Maki
- Yasuko Sawaguchi
- Naoko Okumura
- Shin Takuma
- Hiroshi Okumura
- Warren J. Kemmerling
- General Goodhue
- James Hess
- Colonel Raschen
- Travis Swords
- Major McDonough
- Eitarô Ozawa
- Finance Minister Kanzaki
- Taketoshi Naitô
- Takegami, Chief Cabinet Secretary
- Nobuo Kaneko
- Home Affairs Minister Isomura
- Mizuho Suzuki
- Foreign Minister Kanzaki
- Junkichi Orimoto
- Director-General of the Defense Agency
- Yoshifumi Tajima
- Environmental Director General Hidaka
- Hiroshi Koizumi
- Geologist Minami
- Kunio Murai
- Henmi
- Kei Satô
- Gondo
- Takenori Emoto
- Kitagawa
- Kôji Ishizaka
- Power Plant Guard
- Tetsuya Takeda
- Tramp
- Crawford Binion
- Lieutenant
- Justin Gocke
- Kyle
- Yôsuke Natsuki
- Dr. Hayashida
- Patrick Feren
- Extra
- Mark Simon
- Extra
- Shepard Stern
- Extra
- Alan D. Waserman
- Extra
- Sho Hashimoto
- Captain of Super X
- Shigeo Katô
- Ship Captain
- Kenpachirô Satsuma
- Gojira
- Takashi Ebata
- Ship Captain
- Dennis Falt
- Soviet Submarine Captain
- Kenji Fukuda
- Super X Lieutenant
- Shinpei Hayashiya
- Cameraman Kamiya
- Isao Hirano
- Air Force Chief of Staff
- Luke Johnson
- Soviet Colonel Kashirin
- Alexandre Kairis
- Soviet Ambassador Chefski
- Eiji Kana
- Army Chief of Staff
- Takeshi Katô
- Trade Minister
- Shin Kazanaka
- Uno
- Yasuhiko Kono
- Naval Chief of Staff
- Shinsuke Mikimoto
- Chief of Staff
- Kanta Mori
- Official at Diet
- Takerô Morimoto
- Newscaster
- Haruo Nakajima
- Godzilla
- Walter Nichols
- American Ambassador Rosenberg
- Yumiko Tanaka
- Akemi
- Kenichi Urata
- Secretary Ishimaru
- Kiyoshi Yamamoto
- Science Agency Director
