"The Diary of a Chambermaid" is a novel by Octave Mirbeau, first published in 1900. It follows the life of a young chambermaid named Célestine as she works in a wealthy household in France. Through her diary entries, Célestine shares her observations and experiences, revealing the complexities of class, gender, and morality in society. The story explores themes of exploitation and hypocrisy, as Célestine navigates her relationships with the family she serves and the other staff members. The novel is notable for its critical portrayal of the bourgeoisie and its examination of the struggles faced by women in a patriarchal society.