The Trial of Mary Dugan may refer to: The Trial of Mary Dugan (play), a 1927 play by Bayard Veiller The Trial of Mary Dugan (1929 film), an American pre-Code film, based on the play The Trial of Mary Dugan (1931 film), an American drama film, based on the play The Trial of Mary Dugan (1941 film), an American drama and thriller film, based on the play