Filmography
| Year | Title | Role |
| 2025 | Eddington (2025) | Joe Cross |
| 2024 | Joker: Folie à Deux (2024) | Arthur Fleck |
| 2023 | Beau is Afraid (2023) | Beau |
| 2023 | Napoleon (2023) | Napoleon Bonaparte |
| 2021 | C'mon C'mon (2021) | Johnny |
| 2020 | Gunda (2021) | Executive Producer |
| 2019 | Joker (2019) | Arthur Fleck |
| 2018 | Dominion | Narrator |
| 2018 | Mary Magdalene | Jesus |
| 2018 | Don't Worry, He Won't Get Far on Foot | John Callahan |
| 2018 | The Sisters Brothers | Charlie Sisters |
| 2017 | What the Health | Executive Producer |
| 2017 | You Were Never Really Here | Joe |
| 2015 | Irrational Man | Abe |
| 2014 | Captivated: The Trials of Pamela Smart | Jimmy Emmett |
| 2014 | Inherent Vice | Doc Sportello |
| 2013 | Her | Theodore |
| 2012 | The Master | Freddie Quell |
| 2010 | I'm Still Here (2010) | Producer, Self, Writer |
| 2008 | Two Lovers | Leonard Kraditor |
| 2007 | Reservation Road | Ethan Lerner |
| 2007 | We Own the Night | Bobby Green |
| 2005 | Walk the Line | Johnny Cash |
| 2005 | Earthlings | Narrator |
| 2004 | The Village | Lucius Hunt |
| 2004 | Ladder 49 | Jack Morrison |
| 2004 | Hotel Rwanda | Jack |
| 2003 | Brother Bear | Kenai |
| 2003 | It's All About Love | John |
| 2002 | Signs | Merrill Hess |
| 2001 | Buffalo Soldiers | Ray Elwood |
| 2000 | Gladiator | Commodus |
| 2000 | The Yards | Willie Gutierrez |
| 2000 | Quills | Coulmier |
| 1999 | 8mm and Super 8mm Films | Max California |
| 1998 | Return To Paradise | Lewis McBride |
| 1997 | U - Turn | Toby N. Tucker |
| 1995 | To Die For | Jimmy Emmett |
| 1989 | Parenthood | Garry Buckman-Lampkin |
| 1986 | SpaceCamp | Max |
