Known For
Acting
Known Credits
56
Gender
Male
Birthday
May 7, 1984 (42 years old)
Place of Birth
St. Johns, Newfoundland, Canada
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).
| 2026 | The Outer Threatas | |
| 2026 | The Voices of Our Motheras William | |
| 2025 | The Copenhagen Testas Edmund Cobb | |
| 2025 | Nurembergas Colonel John Amen | |
| 2025 | The Memory Keeperas Elizeus Carrier | |
| 2025 | Shadow of Godas Mason Harper | |
| 2025 | Seven Veilsas Paul | |
| 2025 | Topperas Topper | |
| 2024 | The Stickyas Charlie | |
| 2022 | 61st Streetas Officer Logan | |
| 2021 | Blue Bayouas Ace | |
| 2021 | The Righteousas Aaron Smith | |
| 2020 | Your Honoras Father Jay | |
| 2020 | Perry Masonas Thomas Milligan | |
| 2019 | Hammeras Chris Davis | |
| 2019 | Marriage Storyas Carter Mitchum | |
| 2019 | The Kelly Clarkson Showas Self | |
| 2019 | Ready or Notas Alex | |
| 2019 | City on a Hillas Jimmy Ryan | |
| 2019 | Goalieas Terry Sawchuk | |
| 2019 | State Like Sleepas Darren | |
| 2018 | The Front Runneras Billy Shore | |
| 2018 | Bad Times at the El Royaleas Larsen Rogers | |
| 2018 | Kinas Jake | |
| 2018 | The Darkest Mindsas Rob Meadows | |
| 2018 | How It Endsas Jeremiah | |
| 2018 | Anonas Cyrus Frear | |
| 2018 | Parallelas Josh | |
| 2017 | The Last Tycoonas Max Miner | |
| 2016 | Arrivalas Captain Marks | |
| 2016 | Wandereras Eric | |
| 2016 | The Dark Strangeras Mark | |
| 2015 | How to Plan an Orgy in a Small Townas Bruce Buck | |
| 2015 | Killjoysas Grayson Hicks | |
| 2015 | End of Days, Inc.as Jason | |
| 2015 | Dennisas Dennis | |
| 2014 | Halt and Catch Fireas Tom Rendon | |
| 2013 | Hannibalas Randall Tier | |
| 2013 | Sweetiefaceas Sam | |
| 2012 | Beat Downas Michael | |
| 2010 | Snarbuckledas Jacob O'Higgins | |
| 2010 | Bradas Brad | |
| 2010 | Grown Up Movie Staras Will | |
| 2010 | Republic of Doyleas Des Courtney | |
| 2009 | Mum's the Wordas Curtis | |
| 2009 | Quiet at Dawnas Watts | |
| 2009 | Warehouse 13as Jerry Hoffler | |
| 2009 | Cut from the Same Clothas Jack Cochrane | |
| 2008 | Heartless Disappearance Into Labrador Seasas Charlie | |
| 2008 | Epilogueas Henry | |
| 2008 | The One That Got Awayas Tommy Palchek | |
| 2008 | The Four Horsemenas Eric Rollins | |
| Better Peopleas John | ||
| Nice Peopleas | ||
| Good in the Roomas Charlie | ||
| Little Oneas |
| 2026 | The Voices of Our Mother...Director | |
| 2026 | The Voices of Our Mother...Writer | |
| 2021 | The Righteous...Writer | |
| 2021 | The Righteous...Director | |
| 2021 | The Righteous...Executive Producer | |
| 2019 | Goalie...Executive Producer | |
| 2016 | Wanderer...Director | |
| 2016 | Wanderer...Producer | |
| 2015 | Dennis...Producer | |
| 2013 | Sweetieface...Director | |
| 2013 | Sweetieface...Producer | |
| 2013 | Sweetieface...Editor | |
| 2011 | Kathy...Director | |
| 2010 | Brad...Producer | |
| 2010 | Brad...Editor | |
| 2008 | Pretty Girls...Director | |
| 2008 | Pretty Girls...Writer | |
| 2008 | Pretty Girls...Editor | |
| 2008 | Pretty Girls...Cinematography | |
| Better People...Director | ||
| Better People...Writer | ||
| Better People...Editor | ||
| Nice People...Director | ||
| Good in the Room...Writer | ||
| Good in the Room...Executive Producer |
