Peter Joshua

Cary Grant

Regina 'Reggie' Lampert

Audrey Hepburn

H. Bartholemew

Walter Matthau

Tex Panthollow

James Coburn

Herman Scobie

George Kennedy

Leopold W. Gideon

Ned Glass

Sylvie Gaudel

Dominique Minot

Insp. Edouard Grandpierre

Jacques Marin

Mr. Felix (stamp dealer)

Paul Bonifas

Jean-Louis Gaudel

Thomas Chelimsky

Subway Passenger (uncredited)

Marc Arian

Grégoire Aslan

la femme de chambre

Claudine Berg

Man in Elevator

Peter Stone

Man in Elevator (voice) (uncredited)

Stanley Donen

Taxi Driver (uncredited)

Marcel Bernier

Man in Stamp Market (uncredited)

Albert Daumergue

Mortuary Employee (uncredited)

Roger Trapp

André Tomasi

Taxi Driver (uncredited)

Raoul Delfosse

Writer On Cafe Terrace (uncredited)

Jean Gold

(uncredited)

Chantal Goya

German Tourist (uncredited)

Clément Harari

Master of Ceremonies at Club (uncredited)

Monte Landis

Hotel Receptionnist (uncredited)

Bernard Musson

Italian Representative at URESCO (uncredited)

Antonio Passalia

Ice Cream Salesman (uncredited)

Jacques Préboist

Tex Penthollow

James Coburn IV

Sylvie Gaudet

Minot Dominique

Hallmark Employee On Subway (uncredited)

Louis Viret

Embassy Driver (uncredited)

Michel Thomass

mężczyzna na poczcie

Georges Billy

Michel Thomas

Anthony Stuart

Hamilton Bartholomew

Colin Drake

Lucien Desagneaux

Man Smoking Cigarette in Nightclub

Mel Ferrer