Name	Known for
David Wilmot Dr. Ed Costello Dr. Ed Costello See fewer	Anna Karenina (I) (2012)
Dominic Mafham Dan Woodhouse Dan Woodhouse See fewer	Ophelia (I) (2018)
Aisling O'Sullivan Dr. Cathy Costello Dr. Cathy Costello See fewer	Raw (2008)
Norma Sheahan Fiona McColgan Fiona McColgan See fewer	Dead Still (2020)
Gary Lydon Patrick Murray Patrick Murray See fewer	The Banshees of Inisherin (2022)
Lorraine Pilkington Susie Cassidy Susie Cassidy See fewer	Human Traffic (1999)
Amy Huberman Daisy O'Callaghan Daisy O'Callaghan See fewer	The Bachelor Weekend (2013)
Gertrude Montgomery Aine Flanagan Aine Flanagan See fewer	Ondine (2009)
Rachel Pilkington Keelin Geraghty (as Rachael Pilkington) Keelin Geraghty (as Rachael Pilkington) See fewer	The Clinic (I) (2003)
Geraldine Plunkett Mrs. Fleming Mrs. Fleming See fewer	Glenroe (1983)
Chris O'Dowd Brendan Davenport Brendan Davenport See fewer	Bridesmaids (I) (2011)
Sam Corry Alex / Chris Walsh Alex / Chris Walsh See fewer	Primeval (2007)
Eva Bartley Polly Polly See fewer	Vikings (2013)
Declan Buckley MC / Shirley Temple Bar MC / Shirley Temple Bar See fewer	Meeting on the Stairs (2012)
Una Carroll Nurse Nurse See fewer	The Last Duel (2021)
Barry Cassin Spike Molloy Spike Molloy See fewer	The Count of Monte Cristo (2002)
Sean Flanagan Sean Connell Sean Connell See fewer	Squatters (2020)
Danielle Fox-Clarke Dermie's mother Dermie's mother See fewer	Foreign Exchange (2004)
Una Kavanagh Anita Anita See fewer	Garage (2007)
Rory Keenan Michael Michael See fewer	The Guard (2011)
Vanessa Keogh Dearbhla Dearbhla See fewer	I.R.A.: King of Nothing (2006)
Michael Liebmann Dessie Irvine Dessie Irvine See fewer	Civvies (1992)
Ruth McCabe Maria Geraghty Maria Geraghty See fewer	My Left Foot (1989)
Daragh McDonagh Dermie Dermie See fewer	The Clinic (I) (2003)
Ian McElhinney Joseph McGarry Joseph McGarry See fewer	Hamlet (1996)
Tatiana Ouliankina Natalia Riabushkin Natalia Riabushkin See fewer	Short Order (2005)
Chris Patrick-Simpson Alex's Gay Friend (as Chris Simpson) Alex's Gay Friend (as Chris Simpson) See fewer	Washington Black
Susan Slott Gloria Gloria See fewer	Galactik Football (2006)
Billie Traynor Irene Irene See fewer	Frank (II) (2014)