El Búfalo de la Noche (The Night Buffalo) is a 2007 film directed by Jorge Hernández Aldana and based on Guillermo Arriaga's novel of the same name. The film was released in Mexico on August 17, 2007, and in the United States on April 14, 2009.

The film follows a young schizophrenic man, Gregorio (Gabriel González) who commits suicide, affecting the lives of his girlfriend (Liz Gallardo) and best friend (Diego Luna), who were involved in a secret relationship, betraying Gregorio's trust and inevitably becoming affected by guilt.