M. Butterfly is a 1993 American romantic drama film directed by David Cronenberg. The screenplay was written by David Henry Hwang based on his play of the same name. The film stars Jeremy Irons and John Lone, with Ian Richardson, Barbara Sukowa, and Annabel Leventon.

Plot

Loosely based on true events (see Bernard Boursicot and Shi Pei Pu), the film concerns René Gallimard (Jeremy Irons), a French diplomat assigned to Beijing, China, in the 1960s. He becomes infatuated with a Peking opera performer, Song Liling (John Lone), who spies on him for the Government of the People's Republic of China. Their affair lasts for 20 years, with Gallimard all the while apparently unaware (or willfully ignorant) of the fact that in Peking opera, Dan roles are traditionally performed by men.