Diary of a Mad Black Woman is a 2005 American romantic comedy drama film directed by Darren Grant and written by Tyler Perry. Inspired by the play of the same name, it marks Perry's feature film debut and is the first entry in the Madea film franchise. Starring Perry alongside Kimberly Elise, Steve Harris, Shemar Moore, and Cicely Tyson, it tells the story of a woman who is thrown out of her house by her husband on their 18th wedding anniversary and subsequently moves in with her grandmother, and is the only film written, but not directed, by Perry.

Filmed in Atlanta and Fairburn, Georgia, and released theatrically by Lionsgate Films on February 25, 2005, the film grossed $50.6 million in North America. The sequel, Madea's Family Reunion, was released on February 24, 2006.