Diary of a Chambermaid (French: Journal d'une femme de chambre) is a 2015 French drama film directed by Benoît Jacquot, and written by Jacquot and Hélène Zimmer. It is an adaptation of Octave Mirbeau's 1900 novel of the same name and stars Léa Seydoux as Célestine, a young and ambitious woman who works as a chambermaid for a wealthy couple in France during the early twentieth century. Mirbeau's original novel was adapted into films multiple times before, notably Jean Renoir's 1946 film and Luis Buñuel's 1964 film.

It was screened in the main competition section of the 65th Berlin International Film Festival and was released on 1 April 2015, by Mars Distribution.