Diary of a Mad Housewife is a 1970 film which tells the story of a frustrated housewife who takes a lover, but doesn't find satisfaction. It stars Richard Benjamin, Frank Langella and Carrie Snodgress.

The movie was adapted by Eleanor Perry from the novel by Sue Kaufman. It was directed by Frank Perry.

It was nominated for the Academy Award for Best Actress (Carrie Snodgress).