The Bigamist is a 1953 American drama film noir directed by Ida Lupino starring herself, Joan Fontaine, Edmond O'Brien, and Edmund Gwenn. Producer/Screenwriter Collier Young was married to Fontaine at the time and had previously been married to Lupino. The Bigamist has been cited as the first American feature film made in the sound era in which the female star of a film directed herself.