 | Marcello Mastroianni als Mattia Pascal |
 | Senta Berger als Clara |
 | Flavio Bucci als Terenzio Papiano |
 | Laura Morante als Adriana Paleari |
 | Laura del Sol als Romilda Pescatore |
 | Andréa Ferréol als Silvia Caporale |
 | Bernard Blier als Anselmo Paleari |
 | Caroline Berg als Véronique |
 | Néstor Garay als Giambattista Malagna |
 | Alessandro Haber als Mino Pomino |
 | Carlo Bagno als Pellegrinotto |
 | Clelia Rondinella als Oliva Salvoni |
 | Rosalia Maggio als Vedova pescatore |
| Flora Cantori als Madre di Mattia |
| Helen Sterling als Zia Scolastica |
| François Marinovich als Padre di Pomino |
| Elettra Mancini Ferrua als Governante di Casa Pascal |
| Maria Paola Sutto als Prostituta |
 | Paul Müller als Giocatore a Montecarlo |
 | Victor Cavallo als Avvocato Settebellezze |
| Tonino Proietti als Amante di Clara |
 | Giuseppe Cederna als Giovane Bisca Veneziano |
| Mario Monicelli | Director |
| Luigi Pirandello | Novel |
| Suso Cecchi d'Amico | Story |
| Suso Cecchi d'Amico | Screenplay |
| Ennio De Concini | Story |
| Ennio De Concini | Screenplay |
| Amanzio Todini | Story |
| Amanzio Todini | Screenplay |
| Mario Monicelli | Story |
| Mario Monicelli | Screenplay |
| Camillo Bazzoni | Director of Photography |
| Lorenzo Baraldi | Production Design |
| Gianna Gissi | Costume Design |
| Ruggero Mastroianni | Editor |
| Nicola Piovani | Original Music Composer |
| Nicola Venditti | Production Coordinator |
| Silvia D'Amico Bendicò | Producer |
| Carlo Cucchi | Producer |
| Francesco Germi | Second Assistant Director |
| Giorgio Gobbi | Second Assistant Director |
| Emilio Baldelli | Production Supervisor |
| Silvano Spoletini | Production Supervisor |
| Enzo Prosperini | Production Supervisor |
| Roberta Revetria | Production Secretary |
| Paolo Venditti | Production Secretary |
| Anna Antonelli | Production Secretary |
| Cinzia Fabbri | Production Secretary |
| Riccardo Caneva | Administration |
| Roberto Brega | Camera Operator |
| Gaetano Valle | Camera Operator |
| Maurizio Piano | Assistant Camera |
| Giorgio Urbinelli | Assistant Camera |
| Valerio Giannetti | Still Photographer |
| Raffaele De Luca | Sound |
| Raul Montesanti | Sound |
| Angelo Amatulli | Boom Operator |
| Edoardo Di Iorio | Assistant Production Design |
| Marcella De Marchis | Co-Costume Designer |
| Raoul Settimelli | Assistant Costume Designer |
| Giuseppe Banchelli | Makeup Department Head |
| Corrado Cristofori | Hairstylist |
| Mauro Crescenzo | Assistant Hairstylist |
| Domizio Ercolani | Gaffer |
| Giacomo Tomaselli | Key Grip |
| Gasperina Marani | Assistant Editor |
| Paola Kuveiller | Assistant Editor |
| Stefano Chierchié | Assistant Editor |
| Franco Ancillai | Sound Mixer |
| Delio Catini | Special Effects Supervisor |
| Amanzio Todini | First Assistant Director |
