| Matt Damon | Tom Ripley |
| Gwyneth Paltrow | Marge Sherwood |
| Jude Law | Dickie Greenleaf |
| Cate Blanchett | Meredith Logue |
| Philip Seymour Hoffman | Freddie Miles |
| Jack Davenport | Peter Smith-Kingsley |
| James Rebhorn | Herbert Greenleaf |
| Sergio Rubini | Inspector Roverini |
| Philip Baker Hall | Alvin MacCarron |
| Celia Weston | Aunt Joan |
| Fiorello | Fausto |
| Stefania Rocca | Silvana |
| Ivano Marescotti | Colonnello Verrecchia |
| Anna Longhi | Signora Buffi |
| Alessandro Fabrizi | Sergeant Baggio |
| Lisa Eichhorn | Emily Greenleaf |
| Gretchen Egolf | Fran |
| Jack Willis | Greenleafs Chauffeur |
| Frederick Alexander Bosche | Fran's Boyfriend |
| Dario Bergesio | Police Officer |
| Larry Kaplan | Uncle Ted |
| Claire Hardwick | Gucci Assistant |
| Antonio Prester | American Express Clerk |
| Lorenzo Mancuso | Bus Driver |
| Onofrio Mancuso | Priest |
| Massimo Reale | Immigration Officer |
| Emanuele Carucci Viterbi | American Express Clerk |
| Caterina Deregibus | Dahlia |
| Silvana Bosi | Ermelinda |
| Gianfranco Barra | Desk Manager Aldo |
| Renato Scarpa | Tailor |
| Deirdre Lovejoy | Fighting Neighbor |
| Brian Tarantina | Fighting Neighbor |
| Guy Barker | Napoli Jazz Septet Trumpeter |
| Bernardo Sassetti | Napoli Jazz Septet Pianist |
| Perico Sambeat | Napoli Jazz Septet Alto Saxophonist |
| Gene Calderazzo | Napoli Jazz Septet Drummer |
| Joseph Lepore | Napoli Jazz Septet Double Bassist |
| Rosario Giuliuni | Napoli Jazz Septet Tenor Saxophonist |
| Eddy Palerno | Napoli Jazz Septet Electric Guitarist |
| Byron Wallen | San Remo Jazz Sextet Cornetist |
| Pete King | San Remo Jazz Sextet Alto Saxophonist |
| Clark Tracey | San Remo Jazz Sextet Drummer |
| Jean Toussaint | San Remo Jazz Sextet Tenor Saxophonist |
| Geoff Gascogne | San Remo Jazz Sextet Bassist |
| Carlo Negroni | San Remo Jazz Sextet Pianist |
| Beppe Fiorello | Silvana's Fiancé |
| Marco Quaglia | Silvana's Brother |
| Alessandra Vanzi | Silvana's Mother |
| Marco Rossi | Photographer |
| Roberto Valentini | Onegin in Eugene Onegin Opera |
| Francesco Bovino | Lensky in Eugene Onegin Opera |
| Stefano Canettieri | Zaretsky in Eugene Onegin Opera |
| Marco Foti | Guillot in Eugene Onegin Opera |
| Ludovica Tinghi | Fausto's Fiancée |
| Nicola Pannelli | Dinelli's Cafe Waiter |
| Paolo Calabresi | Customs Officer |
| Pietro Ragusa | Record Store Owner |
| Simone Empler | Boy Singer |
| Gianluca Secci | Policeman |
| Manuel Ruffini | Policeman |
| Pierpaolo Lovino | Policeman |
| Roberto Di Palma | San Remo Hotel Desk Clerk |
| Cesare Cremonini | Boat Salesman |
| Frank Slaten | Dockworker #1 |
