While struggling with his dual identity, Arthur Fleck not only stumbles upon true love, but also finds the music that's always been inside him.
138 min.
Todd Phillips
| Joaquin Phoenix | Arthur Fleck |
| Lady Gaga | Lee Quinzel |
| Brendan Gleeson | Jackie |
| Catherine Keener | Maryanne Stewart |
| Zazie Beetz | Sophie Dumond |
| Jacob Lofland | |
| Harry Lawtey | Harvey Dent |
| Gattlin Griffith | |
| Georgie Carroll | |
| Mike Houston | Guard |
| Troy Metcalf | |
| G.L. McQueary | |
| Sam Wren Vincent | |
| Brian Donahue | Guard |
| Alfred Rubin Thompson | |
| Jimmy Smagula | Guard |
| Anthony Gullotta | Riot Cop (uncredited) |
| Dane Alexander Peplinski | Protestor (uncredited) |
| Joseph Scarpino | Pro Demonstrator (uncredited) |
| Steve Coogan | Paddy Meyers |
| Leigh Gill | Gary Puddles |
| Ken Leung | |
| Sharon Washington | Social Worker |
| Troy Fromin | E Ward Inmate (Troy Larkins) |
| Bill Smitrovich | Judge Herman Rothwax |
| John Lacy | Arkham Guard |
| Tim Dillon | |
| Robert Loftus | Guard |
| Carson Higgins | |
| Ben van Diepen | Music Class Singer |
| Heather Cowles |