Vittorio De Sica as Cesare Celli

Raquel Welch as Juliana

Robert Wagner as Harry Price

Godfrey Cambridge as Benjamin 'Benny' Brownstead

Davy Kaye as Davey Collins (as Davey Kaye)

Francesco Mulè as Antonio Tozzi

Edward G. Robinson as Professor Samuels

Victor Spinetti as Captain Giglio

Yvonne Sanson as Teresa

Mickey Knox as Joe Ware

Femi Benussi as Uncle Carlo's Bride

Paola Borboni as Signora Rosa

Ermelinda De Felice as Emma

Andrea Aureli as Carabiniere

Aldo Bufi Landi as Capitano Del Signore

Carlo Croccolo as Franco

Roberto De Simone as Uncle Carlo

Piero Gerlini as Captain Capuano

Giulio Marchetti as Lt. Naldi

Gianna Dauro as Signora Clara

Carlo Rizzo as Maitre d'Hotel

Nino Musco as Chef

Calisto Calisti as Inspector Bordoni

Luigi Bonos as Old House Owner (uncredited)

Antonio Corevi as Priest at Luigi's Funeral (uncredited)

Jean-Jacques Delbo as Train Engineer (uncredited)

Valéry Inkijinoff as Mafia Guy in Sauna (uncredited)

Romano Milani as Wedding Guest (uncredited)

Nino Vingelli as Restaurant Manager (uncredited)

Milena Vukotić as Angelina Pedrone (uncredited)