TMDBFrom the public credits
Mark O'Brien
Actor · Director
Tells you when a new project gets a date
1984Born, St. Johns
53Credits
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).
Known for
ArrivalCaptain Marks
Marriage StoryCarter Mitchum
Ready or NotAlex
Bad Times at the El RoyaleLarsen Rogers
HannibalRandall Tier2026The Outer ThreatDaniel AshfordMovie
2026The Voices of Our MotherWilliam · Director · WriterMovie
2025The Copenhagen TestEdmund Cobb · 8 episodesShow
2025NurembergColonel John AmenMovie
2025The Memory KeeperElizeus CarrierMovie
2025Shadow of GodMason HarperMovie
2025Seven VeilsPaulMovie
2025TopperTopperMovie
2024The StickyCharlie · 1 episodeShow
202261st StreetOfficer Logan · 8 episodesShow
2021Blue BayouAceMovie
2021The RighteousAaron Smith · Executive Producer · Director · WriterMovie
2020Your HonorFather Jay · 3 episodesShow
2020Perry MasonThomas Milligan · 7 episodesShow
2019HammerChris DavisMovie
2019Marriage StoryCarter MitchumMovie
2019Ready or NotAlexMovie
2019City on a HillJimmy Ryan · 14 episodesShow
2019GoalieTerry Sawchuk · Executive ProducerMovie
2019State Like SleepDarrenMovie
2018The Front RunnerBilly ShoreMovie
2018Bad Times at the El RoyaleLarsen RogersMovie
2018KinJakeMovie
2018The Darkest MindsRob MeadowsMovie
2018How It EndsJeremiahMovie
2018AnonCyrus FrearMovie
2018ParallelJoshMovie
2017The Last TycoonMax Miner · 9 episodesShow
2016WandererEric · Director · ProducerMovie
2016The Dark StrangerMarkMovie
2015How to Plan an Orgy in a Small TownBruce BuckMovie
2015KilljoysGrayson Hicks · 1 episodeShow
2015End of Days, Inc.JasonMovie
2015DennisDennis · ProducerMovie
2014Halt and Catch FireTom Rendon · 15 episodesShow
2013HannibalRandall Tier · 2 episodesShow
2013SweetiefaceSam · Director · Producer · EditorMovie
2012Beat DownMichaelMovie
2011KathyDirectorMovie
2010SnarbuckledJacob O'HigginsMovie
2010BradBrad · Producer · EditorMovie
2010Grown Up Movie StarWillMovie
2010Republic of DoyleDes Courtney · 77 episodesShow
2009Mum's the WordCurtisMovie
2009Quiet at DawnWattsMovie
2009Warehouse 13Jerry Hoffler · 1 episodeShow
2009Cut from the Same ClothJack CochraneMovie
2008Heartless Disappearance Into Labrador SeasCharlieMovie
2008EpilogueHenryMovie
2008Pretty GirlsDirector · Writer · Editor · CinematographyMovie
2008The One That Got AwayTommy PalchekMovie
2008The Four HorsemenEric RollinsMovie
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