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)
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)
Noelle Brown Mrs. Gleeson Mrs. Gleeson See fewer	The Green Knight (2021)
Eileen Byrne Mrs. Gogarty Mrs. Gogarty See fewer	Je mange le chat (2000)
Niamh Daly Karen Karen See fewer	Heartbeat (1992)
Leigh Arnold Clodagh Delaney Clodagh Delaney See fewer	The Clinic (I) (2003)
Bronagh Gallagher Lisa Lisa See fewer	Pulp Fiction (1994)
Luke Griffin Niall Gallagher Niall Gallagher See fewer	Pure Mule (2005)
Paul Harris Jack Jack See fewer	The Informant (1997)
Abigail Iversen Sharon Gleeson Sharon Gleeson See fewer	The Actors (2003)
Allan Keating Treadmill Man Treadmill Man See fewer	Vikings (2013)
Maire O'Neill Mrs. Ryan Mrs. Ryan See fewer	The Abduction Club (2002)
Orla O'Rourke Sinead Kelly Sinead Kelly See fewer	Calvary (2014)
Niall Toibin Dr. Paul O'Callaghan Dr. Paul O'Callaghan See fewer	Far and Away (1992)