Mark O'Brien
Birthday: 1984-05-07 | Place of Birth: CanadaMark O'Brien (born May 7, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle and Tom Rendon in Halt and Catch Fire.
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Known For
Acting
Year
Title
Role
2021
The Righteous
as Aaron Smith
2021
Blue Bayou
as Ace
2019
Ready or Not
as Alex Le Domas
2019
State Like Sleep
as Darren
2018
The Front Runner
as Billy Shore
2018
Anon
as Cyrus Frear
2018
How It Ends
as Jeremiah
2018
Parallel
as Josh
2018
The Darkest Minds
as Rob Meadows
2017
The Last Tycoon
as Max Miner
2016
How to Plan an Orgy in a Small Town
as Bruce Buck
2016
Arrival
as Captain Marks
2016
The Dark Stranger
as Mark
2015
End of Days, Inc.
as Jason
2010
Republic of Doyle
as Des Courtney
2008
The Four Horsemen
as Eric Rollins
