George Cukor Director Cary Grant C. K. Dexter Haven Actor Katharine Hepburn Tracy Samantha Lord Actor James Stewart Mike Connor Actor Ruth Hussey Liz Imbrie Actor John Howard George Kittredge Actor Roland Young Uncle Willie Actor John Halliday Seth Lord Actor Virginia Weidler Dinah Lord Actor Mary Nash Margaret Lord Actor Henry Daniell Sidney Kidd Actor Hillary Brooke Main Line Society Woman (uncredited) Actor Philip Barry Writer Donald Ogden Stewart Writer Waldo Salt Writer Joseph L. Mankiewicz Producer Franz Waxman Original Music Joseph Ruttenberg Cinematographer Frank Sullivan Film Editing Cedric Gibbons Art Director Edwin B. Willis Set Decoration Adrian Costume Design