Cary Grant Peter Joshua Audrey Hepburn Regina Lampert Walter Matthau Hamilton Bartholemew James Coburn Tex Panthollow George Kennedy Herman Scobie Dominique Minot Sylvie Gaudel Ned Glass Leopold Gideon Jacques Marin Edouard Grandpierre Paul Bonifas Mr. Felix Thomas Chelimsky Jean-Louis Gaudel Marc Arian Subway Passenger (uncredited) Claudine Berg Maid (uncredited) Marcel Bernier Taxi Driver (uncredited) Albert Daumergue Man in Stamp Market (uncredited) Raoul Delfosse Taxi Driver (uncredited) Stanley Donen Man in Elevator (voice) (uncredited) Jean Gold Writer On Cafe Terrace (uncredited) Chantal Goya (uncredited) Clément Harari German Tourist (uncredited) Monte Landis Master of Ceremonies at Club (uncredited) Stanley Donen Director Charles Lang Director Marc Maurette Director