日本沈没

小林桂樹

Dr. Tadokoro

藤岡弘、

Onodera Toshio

いしだあゆみ

Abe Reiko

丹波哲郎

Prime Minister Yamamoto

島田正吾

Old man Watari

John Fujioka

Narita

?

Andrew Hughes

Australian Prime Minister

?

Franz Gruber

United Nations Committee member

中村伸郎

Japanese Ambassador

中島春雄

Prime Minister's Chauffeur

二谷英明

Dr. Nakata

夏八木勲

Yuki

滝田裕介

Assistant Professor Yukinaga

田中友幸

Government official (uncredited)