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

Marc Arian

Subway Passenger (uncredited)

Marcel Bernier

Taxi Driver (uncredited)

Raoul Delfosse

Taxi Driver (uncredited)

Stanley Donen

Man in Elevator (voice) (uncredited)

Chantal Goya

(uncredited)

Clément Harari

German Tourist (uncredited)

Monte Landis

Master of Ceremonies at Club (uncredited)

Bernard Musson

Hotel Receptionnist (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)