 | Rupert Everett als Oscar Wilde |
 | Colin Firth als Reggie Turner |
 | Emily Watson als Constance Wilde |
 | Colin Morgan als Alfred 'Bosie' Douglas |
 | Edwin Thomas als Robbie Ross |
 | Franca Abategiovanni als Felice's Mother |
 | Alister Cameron als Mr. Howard |
 | Anna Chancellor als Mrs. Arbuthnott |
 | Béatrice Dalle als Café Concert Manager |
 | Tom Colley als Maurice Gilbert |
| Johanna Kirby als Nurse |
 | André Penvern als Monsieur Dupoirier |
 | Ronald Pickup als Judge |
 | Matteo Salamone als Leon |
 | Antonio Spagnuolo als Felice |
 | John Standing als Dr. Tucker |
 | Benjamin Voisin als Jean |
 | Tom Wilkinson als Father Dunne |
 | Julian Wadham als Mr. Arbuthnott |
| Caterina D'Andrea als Carmela |
| Manu Asencio als Hotel Sandwich Bellboy |
 | Jean-Luc Bubert als Man with Tart |
| Oliver Cater als Cyril Holland Aged 11 |
| Cyril Cordonnier als Café de la Paix Waiter |
| Thierry de Coster als Henri the Waiter |
| Eleonora Costadura als Felice's Wife |
| Jacky Druaux als Hotel Sandwich Manager |
 | Laurent D'Elia als Rouen Station Announcer |
| Raffaele Gargiulo als Michela |
| Patrick Hannaway als Burly Man |
| Aaron Henke als Vyvyan Holland Aged 3 |
| Hans-Jürgen Honikel als Surgeon |
| Jerry Joner als Hôtel de la Plague Manager |
 | Alexis Julemont als Hotel Sandwich Attractive Waiter |
| Kit Loyd als Undergraduate #2 |
 | Joshua McGuire als Ambrose Smithers - Undergraduate #1 |
| Vincenzo Messina als Peppino |
| Philip Noel als Top Hat #2 |
| Teodoro Petti als Cimitero delle Fontanelle Guide |
 | Arnaud Peiffer als Hotel Sandwich Bellboy |
| Lo Polidoro als Café Concert Singer |
| Gerard Rocher als Old Priest |
| Werner Rößler als Marquess of Queensberry |
| Malo Scheen als Bosie's New Boyfriend |
| Toby Sherborne als Prison Warden |
| Philipp Spiegel als Café Concert Waiter |
| Yannick Thor als Cyril Holland Aged 4 |
| Christian Tye als French Poet |
| Sarah Vandenabeele als Rouen Station Passerby |
| Dylan Waters als Vyvyan Holland Aged 10 |
 | Sam Barrett als Undergraduate #3 |
| Howard Perret als Undergraduate #4 |
| Sam Perry als Undergraduate #5 |
| Torren Simonsz als Undergraduate #6 |
 | Giacomo Giorgio als Fisherman at Christmas Party |
 | Giovanni Scotti als Fisherman at Christmas Party |
| Rupert Everett | Director |
| Rupert Everett | Screenplay |
| Azim Bolkiah | Executive Producer |
| David Colby | Associate Producer |
| Carlo Degli Esposti | Co-Producer |
| Sébastien Delloye | Producer |
| Diana Elbaum | Associate Producer |
| Connie Filipello | Executive Producer |
| Patrizia Massa | Line Producer |
| Nicolas Gaster | Editor |
| Celestia Fox | Casting |
| Brian Morris | Production Design |
| Dirk Bombey | Sound Mixer |
| John Conroy | Director of Photography |
| Gabriel Yared | Original Music Composer |
| Giovanni Casalnuovo | Costume Designer |
| Maurizio Millenotti | Costume Designer |
| Luigi Rocchetti | Makeup Designer |
| Francesco Pegoretti | Hair Designer |
| Philipp Kreuzer | Producer |
| Jörg Schulze | Producer |
| Nicola Serra | Co-Producer |
| Frank Evers | Co-Producer |
| Ged Doherty | Executive Producer |
| Colin Firth | Executive Producer |
| Andreas Zielke | Executive Producer |
| Sébastien Delloye | Executive Producer |
| Christine Langan | Executive Producer |
| Joe Oppenheimer | Executive Producer |
| Zygi Kamasa | Executive Producer |
| Nick Manzi | Executive Producer |
| Dirk Schürhoff | Executive Producer |
| Thorsten Ritter | Executive Producer |
| Herbert G. Kloiber | Executive Producer |
| Markus Zimmer | Executive Producer |
| Katja Kuhlmann | Associate Producer |
| Robert Fox | Associate Producer |
| Bettina Brokemper | Associate Producer |
| Stephan Mallmann | Associate Producer |
| Patrizia Massa | Associate Producer |
| François Touwaide | Associate Producer |
| Tanguy Dekeyser | Associate Producer |
| Arlette Zylberberg | Associate Producer |
| Costanza Boccardi | Casting |
| Massimiliano Pacifico | Casting |
| Adele Gallo | Casting |
| Michaël Bier | Casting |
| Daniela Tolkien | Casting |
| Toby Sherborne | First Assistant Director |
| Michelle McDermott | Second Assistant Director |
| Sheila McNaught | Script Supervisor |
| Katharina Beckel | Production Coordinator |
| Wilhelm Moser | Still Photographer |
| Renate Schmaderer | Supervising Art Director |
| Jan Rott | Property Master |
| Charley Cox | Gaffer |
| Rudi Kurth | Key Grip |
| Sascha Verhey | Line Producer |
| Stefaan Schieder | Line Producer |
| Laetitia Bosehert | Unit Manager |
| Torsten Jerabek | Stunt Coordinator |
| Sebastian Bulst | Special Effects Supervisor |
| Frédéric Mastro | Stunt Coordinator |
| Olivier de Laveleye | Special Effects Supervisor |
| Fabio Traversari | Special Effects Supervisor |
| François Dumont | Sound Editor |
| Jeroen Truijens | Sound Editor |
| Alek Goosse | Sound Re-Recording Mixer |
| David Menke | Additional Music |
