Strange Circus (奇妙なサーカス, Kimyō na sākasu) is a 2005 Japanese horror drama film written and directed by Sion Sono.

A narrated fiction presents the story of school principal Ozawa Gozo, who rapes his daughter, Mitsuko, after she sees her parents having sex. Her mother Sayuri witnesses the rape. Gozo now rapes both of them as he pleases, while his family is undermined by incest, suicide, and murder. This narrative is contained within a frame story written by wheelchair-using novelist Taeko. Taeko is assisted by Yuji, a young man who secretly seeks to uncover the possible origins of this story within Taeko's past, and to learn the mysteries of a locked room in her apartment.