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Biography
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 on TMDb
Popular credits from TMDb for additional context.
The Kelly Clarkson Show
2019 • TV
Self
Hannibal
2013 • TV
Randall Tier
Warehouse 13
2009 • TV
Jerry Hoffler
Ready or Not
2019 • Movie
Alex
Halt and Catch Fire
2014 • TV
Tom Rendon
Republic of Doyle
2010 • TV
Des Courtney
Nuremberg
2025 • Movie
Colonel John Amen
Arrival
2016 • Movie
Captain Marks
Killjoys
2015 • TV
Grayson Hicks
Perry Mason
2020 • TV
Thomas Milligan
Mark O'Brien Movies & Web Series on MovieFrost
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