The Devil Wears Prada is a 2003 novel by Lauren Weisberger about a young woman who is hired as a personal assistant to a powerful fashion magazine editor, a job that becomes nightmarish as she struggles to keep up with her boss's grueling schedule and demeaning demands. It spent six months on the New York Times bestseller list and became the basis for the 2006 film of the same name, starring Meryl Streep, Anne Hathaway, and Emily Blunt. The novel is considered by many to be an example of the "chick lit" genre.

Upon its publication The Devil Wears Prada attracted attention because of its author's background. Before writing the novel, Weisberger had worked as a personal assistant for American Vogue editor Anna Wintour, much like the novel's protagonist works for a powerful fashion magazine editor, who also happens to be British like Wintour. Reviewers considered the book a roman à clef, offering insider perspectives on Wintour and other Vogue staff.

A sequel, Revenge Wears Prada: The Devil Returns, was published in 2013, while a third novel, When Life Gives You Lululemons, was published in 2018.