| The Weir (2022) | 2022-2023 | Abbey Theatre, Dublin | Jack |
| Shining City (2021) | 2021 | Theatre Royal Stratford East | John |
| St. Nicholas (2018-9) | 2018-2019 | Donmar Warehouse; Dublin Theater Festival; Goodman Theater Chicago | Critic |
| The Price (2018-19) | 2018-2019 | Royal Theatre, Bath; Wyndham | Victor Franz |
| Mojo (2013) | 2013 | Harold Pinter Theatre | Mickey |
| Rêverie – The Life and Loves of Claude Debussy (2012) | 2012-13 | Canterbury Festival; Middle Temple Hall; St George’s, Bristol; The Apex, Bury St Edmunds; Almeida | Narrator/Claude Debussy |
| Hightide Festival: “Seizing Cinderella” (2012) | 2012 | Main House, The Cut | Ross |
| Sergeant Musgrave’s Dance (2012) | 2012 | Royal Court | Sergeant Musgrave |
| Smolensk (2012) | 2012 | Theatre Royal Haymarket | Cast Member |
| The 24 Hour Plays Celebrity Gala “Greedo Doesn’t Shoot First” (2011) | 2011 | Old Vic | John |
| Chain Play II (2008) | 2008 | The Almeida Theatre | Performer |
| The Late Henry Moss (2006) | 2006 | The Almeida Theatre | Earl |
| Allegiance (2005) | 2005 | New Theatre & Reform Club | Michael Collins |
| Buried Child (2004) | 2004 | National Theatre, Lyttelton | Tilden |
| The Bear (2002) | 2002 | Gate, Dublin, & Spoleto | Gregory Smirnov |
| The Dead Eye Boy (2002) | 2002 | Hampstead Theatre | Billy |
| Dancing at Lughnasa (2000) | 2002 (Directed) | Mountview Theatre School | N/A |
| Battle Royal (1999) | 1999-2000 | National Theatre, Lyttelton | Colonel John McMahon |
| The Weir (1997) | 1997-1999 | Royal Court; Walter Kerr; Dublin; Brussels; Toronto
| Brendan |
| The Clearing (1998) | 1998 (Directed) | Mountview Theatre School | N/A |
| The Jungle Book (1996) | 1996 | Lyric Theatre, Belfast | Grey Brother/ White Hood |
| The Changing Room (1996) | 1996 | Duke of York's | Kendal |
| The Silver Tassie (1995) | 1995 | The Almeida Theatre | Teddy Foran |
| The Plough and the Stars (1994) | 1994 | Zellerbach Theatre | Jack |
| September Tide (1993) | 1993 | King's Head | Evan Davies |
| A Love Song For Ulster (1993) | 1993 | Tricycle Theatre | John/Boyd |
| Elegies for Angles, Punks, and Raging Queens (1992) | 1992 | King's Head | Paul |
| Philadelphia, Here I Come! (1992) | 1992 | King's Head; Wyndham | Gareth O'Donnell-Private |
| Pygmies in the Ruins (1991) | 1991 | Lyric; Royal Court | Committee and Foreman |
| All Souls Night (1991) | 1991 | Lyric Theatre, Belfast | Michael Quinn |
| Oliver Twist (1990) | 1990 | Lyric Theatre, Belfast | Multiple Roles |
| Over The Bridge (1990) | 1990 | Lyric Theatre, Belfast | Mob Leader |
| The Playboy of the Western World (1990) | 1990 | Lyric Theatre, Belfast | Christy Mahon |
| Judgement Day (1989) | 1989 | Old Red Lion | Travelling Salesman |
| The Ragged Trousered Philanthropists (1988) | 1988 | Sheffield Crucible | Frank Owen |
| Force and Hypocrisy (1986) | 1986 | Young Vic | Michael Connell |
| Rat In The Skull | | Grove | Michael Roche |
