Jack Lemmon
Wendell Armbruster, Jr.
Juliet Mills
Pamela Piggott
Clive Revill
Carlo Carlucci
Edward Andrews
J.J. Blodgett
Gianfranco Barra
Bruno
Franco Angrisano
Arnoldo Trotta
Pippo Franco
Mattarazzo
Franco Acampora
Armando Trotta
Giselda Castrini
Anna
Raffaele Mottola
Passport Officer
Lino Coletta
Cipriani
Harry Ray
Dr. Fleischmann
Guidarino Guidi
Maitre D'
Giacomo Rizzo
Barman
Antonino Faà di Bruno
Concierge (as Antonino Faa' Di Bruno)
Yanti Somer
Nurse (as Yanti Sommer)
Janet Ågren
Nurse
María Rosa Sclauzero
Hostess
Melù Valente
Hostess (as Melu' Valente)
Aldo Rendine
Rossi
Bruno Alias
Man at Airport (uncredited)
Sergio Bruni
Singer Sergio Bruni (uncredited)
Pasquale Campagnola
Police commissioner (uncredited)
Nestore Cavaricci
Male Nurse (uncredited)
Enrico Cesaretti
Man at Airport (uncredited)
Armando De Martino
Alberto Trotta (uncredited)
Giorgio Dolfin
Waiter (uncredited)
Andrea Esterhazy
Hotel Guest (uncredited)
Ferruccio Fregonese
Man at Aiport (uncredited)
Ettore Geri
Airplane Passenger (uncredited)
Armando Giovagnoli
Baron Von Schmetterling (uncredited)
Ty Hardin
Helicopter Pilot (uncredited)
Margherita Horowitz
Hotel Guest (uncredited)
Silvio Klein
Man at Airport (uncredited)
Alba Maiolini
Woman at Airport (uncredited)
Giuseppe Marrocco
Commissionaire (uncredited)
Anna Maria Perego
Woman at Hotel (uncredited)
Luigi Scavran
Sommelier (uncredited)
Pupita Lea Scuderoni
Airline Passenger (uncredited)
Maria Tedeschi
Hotel Guest (uncredited)
Giuseppe Terranova
Commissionaire (uncredited)
Bruno Tocci
Police Escort (uncredited)
Sandra Wolff
Airplane Passenger (uncredited)
Lidia Zanussi
Hotel Guest (uncredited)
Gianni Di Segni
Policeman (uncredited)
Samuel A. Taylor
Theatre Play
Billy Wilder
Director
Ralph E. Winters
Editor
I. A. L. Diamond
Screenplay
Billy Wilder
Producer
Billy Wilder
Screenplay
Luigi Kuveiller
Director of Photography
Ferdinando Scarfiotti
Art Direction
Jack Lemmon
Executive Producer
Carlo Rustichelli
Original Music Composer