The Human Vapor (ガス人間㐧1号, Gasu Ningen Daiichigō, lit. 'Gas Human No. 1') is a 1960 Japanese science fiction film directed by Ishirō Honda, with special effects by Eiji Tsuburaya. The film is the story of a librarian (Yoshio Tsuchiya), his love for a dancer and his ability to change into a gaseous form.