Mark O‘Halloran is a writer and actor from Ennis, County Clare, Ireland. As an actor he has worked with all the major theater companies in Ireland, most recently in the acclaimed production of The Importance of Nothing with Pan Pan theater company and The Shadow of a Gunman with the Abbey Theatre in Dublin. On screen he has appeared in numerous films, most notably as one of the eponymous heroes in Adam & Paul, for which he also wrote the screenplay, and the lead role of MP in History’s Future directed by Fiona Tan, for which he was nominated as Best Actor at the IFTA awards 2017. Most recently he played the role of Craigy in Shane Meadow’s TV series for Channel 4, The Virtues. He also appears in Darklands and Dead Still, as well as the upcoming Sky Italy TV series, Devils.
His writing credits include the multi-award-winning films Garage and Adam & Paul, as well as the television series Prosperity. He also wrote Viva, a Spanish-language feature set in Havana, Cuba. His latest screenplay, Rialto, premiered at the 2019 Venice Film Festival. His work has been seen at Cannes, Berlin, Toronto, Telluride and Sundance film festivals. For the stage, he has written the play Trade and most recently contributed text to the award-winning theater production Lippy and co-wrote Beckett’s Room for Dead Centre theater company. He is currently adapting Sally Rooney’s Conversations With Friends for the BBC and Hulu.
He has been nominated for numerous awards including a European Film Award for the screenplay of Adam & Paul, Irish Film and Television Awards where he won for both Best Screenplay and Best TV writer 2007. He also won the London Evening Standard award for Best Screenplay in 2005. Trade was named as best play at the Irish Theatre Awards 2012. Lippy was Best Production at 2014 Irish Theatre Awards as well as winning a Fringe First at Edinburgh and 2 Obie Awards in New York. Viva was shortlisted for best foreign language Oscar and nominated for Best Screenplay at the IFTA awards 2016. In the 2020 IFTA’s Mark was nominated as Best Supporting Actor for The Virtues and Best Screenplay for Rialto.