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

Giselda Castrini

Anna

Giacomo Rizzo

Barman

Antonino Faà di Bruno

Concierge (as Antonino Faa' Di Bruno)

Yanti Somer

Nurse (as Yanti Sommer)

Janet Agren

Nurse

Bruno Alias

Man at Airport (uncredited)

Nestore Cavaricci

Male Nurse (uncredited)

Enrico Cesaretti

Man at Airport (uncredited)

Giorgio Dolfin

Waiter (uncredited)

Ferruccio Fregonese

Man at Aiport (uncredited)

Ettore Geri

Airplane Passenger (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)

Luigi Scavran

Sommelier (uncredited)

Pupita Lea Scuderoni

Airline Passenger (uncredited)

Maria Tedeschi

Hotel Guest (uncredited)

Giuseppe Terranova

Commissionaire (uncredited)

Sandra Wolff

Airplane Passenger (uncredited)

Lidia Zanussi

Hotel Guest (uncredited)

Gianni Di Segni

Policeman (uncredited)