Buffet froid is a 1979 French film written and directed by Bertrand Blier, starring Gérard Depardieu, Carole Bouquet, Bernard Blier and Jean Carmet. The film is a surreal black comedy portrayed as a crime thriller, set in Paris where contemporary urban life has alienated and dehumanized the city dwellers. The film won a César Award for Best Writing, and was nominated for Best Cinematography, Editing, and Production Design.

In the film, a daydreaming man offers his bloodstained knife to a random accountant at a metro station. While the two men argue, the knife disappears. When the accountant is mysteriously murdered with this same knife, the daydreamer chats about the murder with his new neighbor, a police inspector. A series of strange encounters eventually leads to the murder of the daydreamer.