Mark O'Brien
Acting · Born 1984-05-07 · 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).
As cast
Nuremberg 2025
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Falsehood 2025
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Shadow of God 2025
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Seven Veils 2025
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Topper 2025
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Blue Bayou 2021
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The Righteous 2021
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Hammer 2019
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Marriage Story 2019
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Ready or Not 2019
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Goalie 2019
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State Like Sleep 2019
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The Front Runner 2018
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Bad Times at the El Royale 2018
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Kin 2018
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The Darkest Minds 2018
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How It Ends 2018
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Anon 2018
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Parallel 2018
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Arrival 2016
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Wanderer 2016
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The Dark Stranger 2016
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How to Plan an Orgy in a Small Town 2015
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End of Days, Inc. 2015
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Dennis 2015
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Sweetieface 2013
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Beat Down 2012
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Snarbuckled 2010
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Brad 2010
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Mum's the Word 2009
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Grown Up Movie Star 2009
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Quiet at Dawn 2009
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Cut from the Same Cloth 2009
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Heartless Disappearance Into Labrador Seas 2008
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Epilogue 2008
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The One That Got Away 2008
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The Four Horsemen 2008
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The Voices of Our Mother
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The Outer Threat
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Better People
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Nice People
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