Midsummer Madness is a 1921 American silent drama film produced by Famous Players-Lasky and released by Paramount Pictures. It is based on the novel His Friend and His Wife by Cosmo Hamilton. The film was directed by William C. deMille, and stars Jack Holt, Conrad Nagel, Lois Wilson, and Lila Lee. It is the film debut of Ethel Wales. A copy of Midsummer Madness is preserved at the Library of Congress.