Mark O'BrienActingMay 7, 1984 (42 years old) St. Johns, Newfoundland, CanadaPopularity: 1TwitterIMDbBiographyMark 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).Recent & UpcomingThe Voices of Our MotherWilliam • Jun 20267.6NurembergColonel John Amen • Nov 20255.7Shadow of GodMason Harper • Mar 20255.6Seven VeilsPaul • Mar 2025Known For8.3HannibalRandall Tier7.6ArrivalCaptain Marks7.1Ready or NotAlex7.7Warehouse 13Jerry Hoffler7.6NurembergColonel John Amen8.1Your HonorFather Jay7.9Halt and Catch FireTom Rendon7.2Perry MasonThomas Milligan6.9KilljoysGrayson Hicks7.0Republic of DoyleDes Courtney6.8Bad Times at the El RoyaleLarsen Rogers7.0The Darkest MindsRob MeadowsPhotos of Mark O'BrienFilmographyMovies44TV Shows12AllCast42Crew12Browse All2020sThe Voices of Our MotherWilliam7.6NurembergColonel John Amen5.7Shadow of GodMason HarperThe Memory KeeperElizeus Carrier5.6Seven VeilsPaul5.3TopperTopper7.4Blue BayouAce6.2The RighteousAaron Smith2010s7.1Ready or NotAlex7.7Marriage StoryCarter Mitchum6.9GoalieTerry Sawchuk4.7State Like SleepDarren5.4HammerChris Davis7.0The Darkest MindsRob Meadows6.8Bad Times at the El RoyaleLarsen Rogers6.0AnonCyrus Frear5.9The Front RunnerBilly Shore5.3How It EndsJeremiah6.1KinJake6.0ParallelJosh7.6ArrivalCaptain MarksWandererEric4.9The Dark StrangerMark5.1How to Plan an Orgy in a Small TownBruce Buck5.7End of Days, Inc.JasonDennisDennisBeat DownMichaelKathyDirector5.1Grown Up Movie StarWillSnarbuckledJacob O'Higgins2000sHeartless Disappearance Into Labrador SeasCharlie3.8The Four HorsemenEric Rollins4.3The One That Got AwayTommy Palchek
