 | John Candy als Augie Morosco |
 | Jim Belushi als Neil Schwary |
 | Cybill Shepherd als Marilyn Schwary |
 | Sean Young als Phoebe |
 | Richard Lewis als Julian Peters |
 | Ornella Muti als Elena Morosco |
 | Giancarlo Giannini als Inspector Bonnard |
 | George Hamilton als Alfonso de la Pena |
 | Roberto Sbaratto als Detective Toussaint |
 | Joss Ackland als Hercules Popodopoulos |
 | Ann Way als Housekeeper |
| Geoffrey Andrews als Butler |
 | Caterina Boratto als Madame de Senneville |
 | Elsa Martinelli als Carla the Agent |
 | Riccardo Parisio Perrotti als Customs Officer |
| Nino Richelmy als Customs Officer |
| Maria de Candia als Witness |
| Giuseppe Perruccio als Policeman |
| Alessandro Maria Amen als Porter |
 | Franco Angrisano als Train Passenger |
| Georges Carlo als Hotel de Paris Concierge |
| Benedetto Fanna als Hotel de Paris Room Waiter |
| Christian Bianchi als Casino Waiter |
| Marco Martinozzi als Casino Waiter |
| Charles Dubourgeot als Casino Employee |
 | Eugene Levy als Casino Cashier (uncredited) |
 | Erminio Bianchi Fasani als Policeman (uncredited) |
| Eugene Levy | Director |
| Giuseppe Rotunno | Director of Photography |
| Richard Gibbs | Music |
| Pier Luigi Basile | Production Design |
| Lucio Trentini | Line Producer |
| Franco Fumagalli | Set Decoration |
| Molly Maginnis | Costume Design |
| Martha De Laurentiis | Executive Producer |
| Patrick Kennedy | Editor |
| Dino De Laurentiis | Producer |
| Rodolfo Sonego | Original Film Writer |
| Giorgio Arlorio | Original Film Writer |
| Stefano Strucchi | Original Film Writer |
| Luciano Vincenzoni | Original Film Writer |
| Charles Shyer | Screenplay |
| Nancy Meyers | Screenplay |
| Steve Kluger | Screenplay |
| Lucio Trentini | Unit Production Manager |
| Kuki López Rodero | First Assistant Director |
| Ivan Sharrock | Sound Mixer |
| Roberto Malerba | Unit Manager |
| Fabio Massimo Dell'Orco | Unit Manager |
| Luca Lachin | Second Assistant Director |
| Enrico Mastracchi Manes | Second Second Assistant Director |
| Francesca Ghiotto | Script Supervisor |
| Catherine Adair | Assistant Costume Designer |
| Marco Trentini | Assistant Art Director |
| Antonella Di Marco | Assistant Set Decoration |
| Emilia Burchiellaro | Assistant Set Decoration |
| Ben Nye Jr. | Makeup Artist |
| Stefano Fava | Makeup Artist |
| Colleen Callaghan | Hairstylist |
| Paolo Franceschi | Hairstylist |
| Sandy Gendler | Supervising Sound Effects Editor |
| Noah Blough | Sound Editor |
| Clayton Collins | Sound Editor |
| Zack Davis | Sound Editor |
| Robert Ulrich | Sound Editor |
| Larry Rennick | Assistant Sound Editor |
| Robert J. Litt | Sound Re-Recording Mixer |
| Elliot Tyson | Sound Re-Recording Mixer |
| Steve Maslow | Sound Re-Recording Mixer |
