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Mark O'Brien

May 07, 1984 (39 years old) in 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).

Known For

The Kelly Clarkson Show

Halt and Catch Fire

Hannibal

Arrival

Your Honor

Credits

2023 · Seven Veils as Paul
2022 · 61st Street as Officer Logan
2021 · Blue Bayou as Ace
2021 · The Righteous as Aaron Smith
2020 · Your Honor as Father Jay
2020 · Perry Mason as Thomas Milligan
2019 · Hammer as Chris Davis
2019 · Marriage Story as Carter Mitchum
2019 · The Kelly Clarkson Show as
2019 · Ready or Not as Alex Le Domas
2019 · City on a Hill as Jimmy Ryan
2019 · Goalie as Terry Sawchuk
2019 · State Like Sleep as Darren
2018 · The Front Runner as Billy Shore
2018 · Bad Times at the El Royale as Larsen Rogers
2018 · Kin as Jake
2018 · The Darkest Minds as Rob Meadows
2018 · How It Ends as Jeremiah
2018 · Anon as Cyrus Frear
2018 · Parallel as Josh
2017 · The Last Tycoon as Max Miner
2016 · Arrival as Captain Marks
2016 · The Dark Stranger as Mark
2015 · How to Plan an Orgy in a Small Town as Bruce Buck
2015 · Killjoys as Grayson Hicks
2015 · End of Days, Inc. as Jason
2014 · Halt and Catch Fire as Tom Rendon
2013 · Hannibal as Randall Tier
2012 · Beat Down as Michael
2010 · Snarbuckled as Jacob O'Higgins
2010 · Republic of Doyle as Des Courtney
2009 · Grown Up Movie Star as Will
2009 · Warehouse 13 as Jerry Hoffler
2009 · Cut from the Same Cloth as Jack Cochrane
2008 · Heartless Disappearance Into Labrador Seas as Charlie
2008 · The Four Horsemen as Eric Rollins
2024 · The Voices of Our Mother as William
2024 · Nuremberg as Col. John Amen
2024 · Shadow of God as Mason Harper