| Year | Title | Role | Notes | |
|---|---|---|---|---|
| 1997 | Quando | Pat | Short subject[1] | |
| 1998 | The Tale of Sweety Barrett | Pat the Barman | ||
| 1999 | Eviction | Brendan McBride | Short subject | |
| Sunburn | Davin McDerby | |||
| At Death's Door | Grim Reaper, Jr. | Short subject | ||
| The Trench | Rag Rookwood | |||
| 2000 | Filleann an Feall | Ger | Short subject | |
| A Man of Few Words | Best man | Short subject | ||
| 2001 | On the Edge | Jonathan Breech | ||
| How Harry Became a Tree | Gus | |||
| Disco Pigs | Darren / Pig | |||
| Watchmen | Phil | Short subject | ||
| 2002 | 28 Days Later | Jim | ||
| 2003 | Intermission | John | ||
| Girl with a Pearl Earring | Pieter | |||
| Cold Mountain | Bardolph | |||
| Zonad | Guy Hendrickson | Short subject | ||
| 2005 | Batman Begins | Dr. Jonathan Crane / The Scarecrow | ||
| Red Eye | Jackson Rippner | |||
| Breakfast on Pluto | Patrick "Kitten" Braden | |||
| 2006 | The Silent City | Soldier | Short subject | |
| The Wind That Shakes the Barley | Damien O'Donovan | |||
| 2007 | Sunshine | Robert Capa | ||
| Watching the Detectives | Neil Lewis[2] | |||
| 2008 | The Dark Knight | Dr. Jonathan Crane / The Scarecrow | Cameo | |
| The Edge of Love | William Killick | |||
| Waveriders | Narrator | Documentary; voice only | ||
| 2009 | Perrier's Bounty | Michael McCrea | ||
| The Water | Son | Short subject | ||
| 2010 | Peacock | John Skillpa / Emma Skillpa | ||
| Hippie Hippie Shake | Richard Neville | Unreleased | ||
| Inception | Robert Fischer | |||
| Edward Dillinger, Jr. | Uncredited cameo | |||
| 2011 | Retreat | Martin | ||
| In Time | Raymond Leon | |||
| 2012 | Red Lights | Tom Buckley | ||
| Broken | Mike Kiernan | |||
| The Dark Knight Rises | Dr. Jonathan Crane / The Scarecrow | Cameo | ||
| 2013 | Harriet and the Matches | Cat | Short subject; voice only | |
| 2014 | Aloft | Ivan | ||
| Transcendence | Agent Donald Buchanan | |||
| From the Mountain | Narrator | Short subject; voice only | ||
| 2015 | Narrator | Documentary; voice only | ||
| In the Heart of the Sea | Matthew Joy | |||
| 2016 | Anthropoid | Jozef Gabčík | ||
| Free Fire | Chris | |||
| 2017 | The Party | Tom | ||
| Dunkirk | Shivering Soldier | |||
| 2018 | The Delinquent Season | Jim | ||
| The Overcoat | Akaky | Short subject; voice only | ||
| 2019 | Anna | Lenny Miller | ||
| 2020 | A Quiet Place Part II | Emmett | ||
| 2021 | All of This Unreal Time | Man | Short subject | |
| 2023 | Kensuke's Kingdom | Dad | Voice only | |
| Oppenheimer | J. Robert Oppenheimer | |||
| 2024 | Small Things like These | Bill Furlong | Also producer | |
| 2025 | 28 Years Later | Jim | Post-production; also executive producer | |
| TBA | Steve | Steve | Post-production; also producer[3] [4] [5] | |
| Jim | Filming; also executive producer | |||
| The Immortal Man | Thomas Shelby | Filming; also producer |
| Year | Title | Role | Notes | |
|---|---|---|---|---|
| 2001 | The Way We Live Now | Paul Montague | 4 episodes | |
| 2013–2022 | Peaky Blinders | Thomas Shelby | Main role |
| Year | Title | Artist | Notes | |
|---|---|---|---|---|
| 2009 | "The Water" | Feist | ||
| 2011 | "Winter Beats" | I Break Horses | ||
| 2013 | "Hold Me Forever" | Money | Director only | |
| 2015 | "The Clock" | Paul Hartnoll | ||
| 2016 | "Stages" | The Frank and Walters | Voice only | |
| 2017 | "The Ways" | Allred and Broderick | ||
| "The Meetings of the Waters" | ||||
| 2022 | "Pana-vision" | The Smile |
| Year | Title | Voice role |
|---|---|---|
| 2005 | Batman Begins | Dr. Jonathan Crane / Scarecrow |
| 2023 | Peaky Blinders: The King's Ransom | Thomas Shelby |
| Year | Title | Role | Venue(s) | |
|---|---|---|---|---|
| 1996–1998 | Disco Pigs | Darren/"Pig" | World tour[6] | |
| 1998 | Much Ado About Nothing | Claudio | Kilkenny Castle[7] | |
| 1999 | The Country Boy | Curly | Town Hall Theatre | |
| 1999 | Juno and the Paycock | Johnny Boyle | Gaiety Theatre | |
| 2002 | The Shape of Things | Adam | Gate Theatre[8] | |
| 2003 | The Seagull | Konstantine | Edinburgh International Festival[9] | |
| 2004 | The Playboy of the Western World | Christy Mahon | Town Hall Theater[10] | |
| 2006 | Love Song | Beane | Ambassadors Theatre[11] | |
| 2010 | From Galway to Broadway and back again. | Christy Mahon | Town Hall Theatre[12] | |
| 2011–2012 | Misterman | Thomas Magill | Galway Arts Festival Royal National Theatre St. Ann's Warehouse | |
| 2014 | Ballyturk | No. 1 | Galway Arts Festival Olympia Theatre Cork Opera House Royal National Theatre | |
| 2018–2019 | Grief is the Thing with Feathers | Crow, Dad | Black Box Theatre O’Reilly Theatre[13] Barbican Centre St. Ann's Warehouse |