Mary Elizabeth Hartman (December 23, 1943 - June 10, 1987) was an American actress, best known for her performance in the 1965 film A Patch of Blue, playing a blind girl named Selina D'Arcy, opposite Sidney Poitier, a role for which she was nominated for the Academy Award for Best Actress and the Golden Globe Award. The next year, she appeared in Francis Ford Coppola's You're a Big Boy Now as Barbara Darling, for which she was nominated for another Golden Globe Award. On stage, she was best known for her interpretations of Laura Wingfield in The Glass Menagerie and Emily Webb in Our Town.