Name	Known for
James D'Arcy Ernie Coyne Ernie Coyne See fewer	Cloud Atlas (2012)
Frank Laverty Kelly Kelly See fewer	Michael Collins (1996)
Vincent Regan Tom O'Toole Tom O'Toole See fewer	Snow White and the Huntsman (2012)
Paloma Baeza Ita Feeney Ita Feeney See fewer	Sunshine (2007)
Dawn Bradfield Ursula Feeney Ursula Feeney See fewer	King Arthur (2004)
Brendan Coyle Michael Collins Michael Collins See fewer	Downton Abbey (2010)
John Kavanagh Eugene O'Brien Eugene O'Brien See fewer	Alexander (2004)
Lorcan Cranitch Inspector Nelson Inspector Nelson See fewer	Cracker (1993)
Denis Conway O'Driscoll O'Driscoll See fewer	Alexander (2004)
Vincent Walsh Gallagher Gallagher See fewer	Played (2013)
Brendan McNamara Davy Davy See fewer	The Bourne Supremacy (2004)
Lloyd Hutchinson Joe O'Neill Joe O'Neill See fewer	Anonymous (I) (2011)
Kieran Hurley Dempsey Dempsey See fewer	Batman Begins (2005)
B.J. Hogg Sergeant Black Sergeant Black See fewer	Hunger (2008)
Frank Mackey Sean Sean See fewer	Henry & Sunny (2009)
Arthur Riordan Vincent Smith Vincent Smith See fewer	The Enigma of Frank Ryan (2012)
Shane Hagan Joe Joe See fewer	Saving Private Ryan (1998)
Michael Hayes Liam Liam See fewer	Rory O'Shea Was Here (2004)
Demien McAdam Robert Robert See fewer	Amongst Women (1998)
Dermot Robinson Inspector Crowley Inspector Crowley See fewer	The Last Express (1997)
Alan O'Neill Scout 1 Scout 1 See fewer	Sons of Anarchy (2008)
Keith O'Grady Scout 2 Scout 2 See fewer	Saving Santa (2017)
Paul Ronan Liam Lynch Liam Lynch See fewer	How I Live Now (2013)
Peter Dineen Hurley Hurley See fewer	Foreign Exchange (2004)
Luke Hayden Mr. MacDonagh Mr. MacDonagh See fewer	Michael Collins (1996)
Bairbre O'Toole Anne MacDonagh (as Bairbre Scully) Anne MacDonagh (as Bairbre Scully) See fewer	The Fireman and the Nurse (2016)
Paul Tall-Order Ritchie IRA IRA See fewer	Blind Man's Bluff (2022)
Niall Ó Sioradáin IRA Man IRA Man See fewer	Vikings (2013)