Name	Known for
Ryan Andrews Sean Cassidy Sean Cassidy See fewer	Prodigal Son (2011)
Jim Bartley Bela Doyle Bela Doyle See fewer	Tolka Row (1964)
Niamh Daly Debbie O'Brien Debbie O'Brien See fewer	Heartbeat (1992)
Wesley Doyle Doug Ferguson Doug Ferguson See fewer	On the Ball (2018)
Kate Gilmore Karen O'Neill Karen O'Neill See fewer	Someday Sadie (2021)
Alan Howley Eoghan O'Brien Eoghan O'Brien See fewer	Harry Wild (2022)
Tom Jordan Charlie Kelly Charlie Kelly See fewer	Remington Steele (1982)
Amilia Keating Katy O'Brien (as Amilia Clarke Stewart) Katy O'Brien (as Amilia Clarke Stewart) See fewer	Fair City (1989)
Stephanie Kelly Sash Bishop Sash Bishop See fewer	Kisses (2008)
Daithí Mac Suibhne Emmet O'Brien Emmet O'Brien See fewer	Redemption (I) (2022)
Geoff Minogue Tommy Dillon Tommy Dillon See fewer	Once (I) (2007)
Eamon Morrissey Cass Cassidy Cass Cassidy See fewer	This Is My Father (1998)
Clelia Murphy Niamh Cassidy Niamh Cassidy See fewer	Grabbers (2012)
Mick Nolan Ray O'Connell Ray O'Connell See fewer	The Commitments (1991)
Aisling O'Neill Carol Foley Carol Foley See fewer	Basic Instinct 2 (2006)
Geraldine Plunkett Rose O'Brien Rose O'Brien See fewer	Glenroe (1983)
Karl Shiels Robbie Quinn Robbie Quinn See fewer	Batman Begins (2005)
Johnny Ward Ciaran Holloway Ciaran Holloway See fewer	This Must Be the Place (2011)
Nyree Yergainharsian Melanie Ryan Melanie Ryan See fewer	Kindred (I) (2020)