Name	Known for
Ed Cosgrave Sergeant Mick O'Neal Sergeant Mick O'Neal See fewer	Camelot (2011)
Una Crawford O'Brien Renee Phelan Renee Phelan See fewer	Harry Wild (2022)
Niamh Daly Debbie O'Brien Debbie O'Brien See fewer	Heartbeat (1992)
Lena-Marie Fitzgerald Fidelma Taylor (as Lena Marie Fitzgerald) Fidelma Taylor (as Lena Marie Fitzgerald) See fewer	The Wonder (I) (2022)
Joe Hanley Hughie Phelan Hughie Phelan See fewer	The Count of Monte Cristo (2002)
George Hanover DI Audrey McCabe DI Audrey McCabe See fewer	The Randomer (2016)
Caroline Harvey Farrah Clayton Farrah Clayton See fewer	Wednesday's Child (I) (2022)
Alan Howley Eoghan O'Brien Eoghan O'Brien See fewer	Harry Wild (2022)
Una Kavanagh Heather Daly Heather Daly See fewer	Garage (2007)
Amilia Keating Katy O'Brien (as Amilia Stewart) Katy O'Brien (as Amilia Stewart) See fewer	Fair City (1989)
Daithí Mac Suibhne Emmet O'Brien Emmet O'Brien See fewer	Redemption (I) (2022)
Geoff Minogue Tommy Dillon Tommy Dillon See fewer	Once (2006)
Bryan Murray Bob Charles Bob Charles See fewer	The Professor and the Madman (2019)
Tommy O'Neill John Deegan John Deegan See fewer	Titanic: Blood and Steel (2012)
Geraldine Plunkett Rose O'Brien Rose O'Brien See fewer	Glenroe (1983)
Donna Anita Quinn Ama Chisenga (as Donna Anita Nikolaisen) Ama Chisenga (as Donna Anita Nikolaisen) See fewer	The South Westerlies (2020)