Mark O'Brien
Acting1984 St. Johns, Newfoundland, Canada
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
Acting History
Future
2025
Topper
as Topper
Nuremberg
as Colonel John Amen
Falsehood
as Elizeus Carrier
Shadow of God
as Mason Harper
Seven Veils
as Paul
The Copenhagen Test
TVas Edmund Cobb• 8 eps
2024
The Sticky
TVas Charlie• 1 eps
2023
Your Honor
TVas Father Jay• 3 eps
Perry Mason
TVas Thomas Milligan• 7 eps
2022
The Kelly Clarkson Show
TVas Self• 1 eps
61st Street
TVas Officer Logan
2021
The Righteous
as Aaron Smith
Blue Bayou
as Ace
The Righteous
Executive Producer
The Righteous
Director
The Righteous
Writer
2019
Ready or Not
as Alex Le Domas
Hammer
as Chris Davis
Marriage Story
as Carter Mitchum
Goalie
as Terry Sawchuk
City on a Hill
TVas Jimmy Ryan• 14 eps
Goalie
Executive Producer
2018
The Front Runner
as Billy Shore
El final de todo
as Jeremiah
Anon
as Cyrus Frear
Parallel
as Josh
The Darkest Minds
as Rob Meadows
Kin
as Jake
Bad Times at the El Royale
as Larsen Rogers
2017
The Last Tycoon
TVas Max Miner
2016
2015
End of Days, Inc.
as Jason
How to Plan an Orgy in a Small Town
as Bruce Buck
Halt and Catch Fire
TVas Tom Rendon• 15 eps
Killjoys
TVas Grayson Hicks• 1 eps
2014
Hannibal
TVas Randall Tier• 2 eps
2011
Warehouse 13
TVas Jerry Hoffler• 1 eps
2010
Republic of Doyle
TVas Des Courtney• 77 eps
2009
Grown Up Movie Star
as Will
Mum's the Word
as Curtis
2008
The Four Horsemen
as Eric Rollins
The One That Got Away
as Tommy Palchek