Princess Ann
Audrey Hepburn
Joe Bradley
Gregory Peck
Cab driver
Alfredo Rizzo
Hennessy's Secretary
Laura Solari
Shoe Seller
Gorella Gori
Admiral Dancing with Princess (uncredited)
Armando Annuale
Young Boy with Car (uncredited)
Maurizio Arena
Flower Seller (uncredited)
Gildo Bocci
Embassy Aide (uncredited)
Andrea Esterhazy
Correspondent at Poker Game (uncredited)
George Higgins
Richard McNamara
Old Man Dancing with Princess (uncredited)
Luigi Moneta
Irving Radovich
Eddie Albert
Faceless Man on the Barge (uncredited)
Piero Pastore
Worker Hugging the Three Out Side Police Station (uncredited)
Mimmo Poli
Giuliano Raffaelli
Police Official (uncredited)
Carlo Rizzo
Girl at Cafe Waving at Irving (uncredited)
Gianna Segale
Dianora Veiga
Pallid Young Man Dancing with Princess (uncredited)
Marco Tulli
Francesca - Irving's Model (uncredited)
Tania Weber
Schoolgirl (uncredited)
Catherine Wyler
(uncredited)
Nadia Balabine
Mr. Hennessy
Hartley Power
Ambassador
Harcourt Williams
Countess Vereberg
Margaret Rawlings
Gen. Provno
Tullio Carminati
Mario Delani
Paolo Carlini
Giovanni
Claudio Ermelli
Charwoman
Paola Borboni
Screenplay
Ian McLellan Hunter
Associate Producer
Robert Wyler
Makeup Supervisor
Wally Westmore
Additional Soundtrack
Victor Young
Director of Photography
Henri Alekan
Original Music Composer
Georges Auric
Costume Design
Edith Head
Camera Operator
Enzo Barboni
Assistant Director
Bernard Vorhaus
Producer
William Wyler
Director
Dalton Trumbo
Story
John Dighton
Editor
Robert Swink
Sound Designer
Joseph de Bretagne
Art Direction
Hal Pereira
Lester Koenig
Hairstylist
Anna Cristofani
Set Designer
Italo Tomassi
Orchestrator
Leo Shuken
Walter H. Tyler
Assistant Editor
Robert Belcher
Vittorio Valentini
Unit Production Manager
Maurizio Lodi-Fè
Charles Woolstenhulme
Herbert Coleman
Alberto De Rossi
Sound Recordist
Franz Planer