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)
Barbara Adair Old Woman Old Woman See fewer	Grabbers (2012)
Eva Bartley Polly Polly See fewer	Vikings (2013)
Tony Brown Mr. Donovan Mr. Donovan See fewer	Batman Begins (2005)
Lesley Conroy Kathleen Kathleen See fewer	Strength and Honour (2007)
Neilí Conroy Sorcha Geraghty Sorcha Geraghty See fewer	Family (1994)
Alexander Downes Mr. Penrose Mr. Penrose See fewer	Bloom (I) (2003)
Sean Flanagan Sean Connell Sean Connell See fewer	Squatters (2020)
Rory Keenan Michael Michael See fewer	The Guard (2011)
Garrett Keogh Michael Geraghty Michael Geraghty See fewer	Excalibur (1981)
Ruth McCabe Maria Geraghty Maria Geraghty See fewer	My Left Foot (1989)
Ian McElhinney Joseph McGarry Joseph McGarry See fewer	Hamlet (1996)
Janet Moran Molly Molly See fewer	Breakfast on Pluto (2005)
Laurie Morton Mrs. Joyce Mrs. Joyce See fewer	Strumpet City (1980)
Chris Newman Tommy Geraghty Tommy Geraghty See fewer	Ferocious Planet (2011)
Gareth O'Connor Bryan Grimes Bryan Grimes See fewer	Finding Joy (2018)
Donal O'Kelly Frank Grimes Frank Grimes See fewer	Bloom (I) (2003)
Tatiana Ouliankina Natalia Riabushkin Natalia Riabushkin See fewer	Short Order (2005)
Saoirse Ronan Rhiannon Geraghty Rhiannon Geraghty See fewer	Hanna (2011)
Niall Toibin Dr. Paul O'Callaghan Dr. Paul O'Callaghan See fewer	Far and Away (1992)
Jake Williams Barry Geraghty Barry Geraghty See fewer	Family (1994)