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)
Bernard Musson
Hotel Receptionnist (uncredited)
Antonio Passalia
Italian Representative at URESCO (uncredited)
Jacques Préboist
Ice Cream Salesman (uncredited)
Peter Stone
Man in Elevator / Marine (voice) (uncredited)
Michel Thomass
Embassy Driver (uncredited)
Roger Trapp
Mortuary Employee (uncredited)
Louis Viret
Hallmark Employee On Subway (uncredited)