Acting

Mark O'Brien

Born 1984-05-07 · St. Johns, Newfoundland, Canada12 series53 films

Mark O'Brien (born May 7th, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle (2010) and Tom Rendon in Halt and Catch Fire (2014).

Mark O'Brien's films on Charmy Movies →

Acting

2025The Copenhagen TestEdmund Cobb8 ep.
2024The StickyCharlie1 ep.
202261st StreetOfficer Logan8 ep.
2020Your HonorFather Jay3 ep.
2020Perry MasonThomas Milligan7 ep.
2019City on a HillJimmy Ryan14 ep.
2017The Last TycoonMax Miner9 ep.
2015KilljoysGrayson Hicks1 ep.
2014Halt and Catch FireTom Rendon15 ep.
2013HannibalRandall Tier2 ep.
2010Republic of DoyleDes Courtney77 ep.
—StillwaterDeputy Ted Keegan

Guest appearances

2024The StickyCharlie1 ep.
2023Perry MasonThomas Milligan7 ep.
2023Your HonorFather Jay3 ep.
2022The Kelly Clarkson ShowSelf1 ep.
2021City on a HillJimmy Ryan4 ep.
2015Halt and Catch FireTom Rendon15 ep.
2015KilljoysGrayson Hicks1 ep.
2014HannibalRandall Tier2 ep.
2011Warehouse 13Jerry Hoffler1 ep.