The Green Room (French: La chambre verte) is a 1978 French film directed by François Truffaut and based on the Henry James short story, "The Altar of the Dead", in which a man becomes obsessed with the dead people in his life and builds a memorial to them. It is also based on two other short stories by Henry James: "The Beast in the Jungle" and "The Way It Came". It was Truffaut's seventeenth feature film as a director and the third and last of his own films in which he acted in a leading role. It starred Truffaut, Nathalie Baye, Jean Dasté and Patrick Maléon.
Truffaut spent several years working on the film's script and felt a special connection to the theme of honouring and remembering the dead. In the film, he included portraits of people from his own life at the main character's "Altar of the Dead". The Green Room was one of Truffaut's least praised films, and also one of his least successful financially.