 | Ugo Tognazzi als Andrea Artusi |
 | Claudia Cardinale als Maria Grazia |
 | Bernard Blier als Mariotti |
 | Michèle Girardon als Cristiana |
 | Paul Guers als Gabriele |
 | Philippe Nicaud als il medico |
 | Gian Maria Volonté als Assessore |
 | Susy Andersen als Wanda Mariotti |
 | José Luis de Vilallonga als Presidente |
 | Salvo Randone als Belisario |
 | Ester Carloni als Palmira |
 | Elvira Tonelli als The elder Maid at the Artusis |
 | Edda Ferronao als The younger Maid at the Artusis |
| Antonio Gerini |
| Liliana Salvioni als Maria Grazia's Friend |
 | Anna María Aveta |
| Ernesto Azzalini als The Architect |
| Olindo De Turres |
| Silvio Piergentili |
 | Laura Antonelli als Guest with a Beehive Hairdo at the Artusis (uncredited) |
 | Lando Buzzanca als Giovannino - younger Manservant at the Artusis (uncredited) |
 | Jean Claudio als The Man at the Swimming Pool (uncredited) |
 | Brett Halsey als Maria Grazia's Partner in Nightclub (uncredited) |
| Ettore Mattia als Commendator Calise (uncredited) |
 | Enrico Papa als Waiter (uncredited) |
 | Paolo Pietrangeli als The Bespectacled Guest near Piano at the Artusis (uncredited) |
| Alfonso Sansone als The Unmarried Guest at the Artusis (uncredited) |
| Jacques Stany als Guest at the Artusis (uncredited) |
 | Fred Williams als Man in Nightclub (uncredited) |
| Antonio Pietrangeli | Director |
| Henryk Chroscicki | Producer |
| Alfonso Sansone | Producer |
| Armando Nannuzzi | Director of Photography |
| Eraldo Da Roma | Editor |
| Maurizio Chiari | Set Decoration |
| Maurizio Chiari | Costume Design |
| Iole Cecchini | Hairstylist |
| Michele Trimarchi | Makeup Artist |
| Guglielmo Colonna | Production Manager |
| Giovanni Fabbri | Second Assistant Director |
| Tony Tounsi | Second Assistant Director |
| Bruno Cesari | Assistant Set Decoration |
| Rosa Sansone | Assistant Set Decoration |
| Mario Amari | Sound Mixer |
| Elio Pacella | Sound |
| Tullio Petricca | Boom Operator |
| Nino Cristiani | Camera Operator |
| Amedeo Nannuzzi | Assistant Camera |
| Enrico Umetelli | Assistant Camera |
| Lucia Baldacci | Tailor |
| Marcella Benvenuti | Assistant Editor |
| Armando Trovajoli | Conductor |
| Marcello Berni | Production Secretary |
| Roberto Giussani | Production Secretary |
| Archie Savage | Choreographer |
| Fernand Crommelynck | Theatre Play |
| Fernand Crommelynck | Author |
| Diego Fabbri | Screenplay |
| Diego Fabbri | Dialogue |
| Ruggero Maccari | Screenplay |
| Ruggero Maccari | Dialogue |
| Ettore Scola | Screenplay |
| Ettore Scola | Dialogue |
| Stefano Strucchi | Screenplay |
| Stefano Strucchi | Dialogue |
| Marcello Ugolini | First Assistant Director |
| Margherita Ferroni | Assistant Costume Designer |
| Alessandro Gori | Unit Manager |
| Mario Forges Davanzati | Script Supervisor |
| Giuseppe Ranieri | Assistant Production Design |
| Nicolò Pomilia | Line Producer |
| Maurizio Chiari | Production Design |
| Armando Trovajoli | Original Music Composer |
