Open the app
Mark O'Brien

Actor • Born 1984

Mark O'Brien

Open Cinema

About

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

Warehouse 13 posterWarehouse 13Series • 2009Hannibal posterHannibalSeries • 2013Arrival posterArrivalMovie • 2016Halt and Catch Fire posterHalt and Catch FireSeries • 2014Killjoys posterKilljoysSeries • 2015Perry Mason posterPerry MasonSeries • 2020Republic of Doyle posterRepublic of DoyleSeries • 2010Ready or Not posterReady or NotMovie • 2019Your Honor posterYour HonorSeries • 2020City on a Hill posterCity on a HillSeries • 2019Marriage Story posterMarriage StoryMovie • 2019Nuremberg posterNurembergMovie • 202561st Street poster61st StreetSeries • 2022The Copenhagen Test posterThe Copenhagen TestSeries • 2025Bad Times at the El Royale posterBad Times at the El RoyaleMovie • 2018The Darkest Minds posterThe Darkest MindsMovie • 2018The Sticky posterThe StickySeries • 2024The Last Tycoon posterThe Last TycoonSeries • 2017How It Ends posterHow It EndsMovie • 2018The Front Runner posterThe Front RunnerMovie • 2018Kin posterKinMovie • 2018Seven Veils posterSeven VeilsMovie • 2025Anon posterAnonMovie • 2018Shadow of God posterShadow of GodMovie • 2025