Mary Coyle Chase, American journalist and playwright (d. 1981)
Mary Coyle Chase (born Mary Agnes McDonough Coyle; 25 February 1906 – 20 October 1981) was an American journalist, playwright and children's novelist, known primarily for writing the 1944 Broadway play Harvey, which was adapted into the 1950 film starring Jimmy Stewart.

She wrote fourteen plays, two children's novels, and one screenplay, and worked seven years at the Rocky Mountain News as a journalist. Three of her plays were made into Hollywood films: Sorority House (1939), Harvey (1950), and Bernardine (1957).