Back to Home
Mark O'Brien
Age: 42 St. Johns, Newfoundland, Canada Acting
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).
Available on CineVibes
Full Filmography
All Credits (44)
SOON
Little One
TBA•Movie
as Unknown
The Voices of Our Mother
2026•Movie
as William
The Copenhagen Test
2025•TV
as Edmund Cobb
Nuremberg
2025•Movie
as Colonel John Amen
The Memory Keeper
2025•Movie
as Elizeus Carrier
Shadow of God
2025•Movie
as Mason Harper
Seven Veils
2025•Movie
as Paul
Topper
2025•Movie
as Topper
The Sticky
2024•TV
as Charlie
61st Street
2022•TV
as Officer Logan
Blue Bayou
2021•Movie
as Ace
The Righteous
2021•Movie
as Aaron Smith
Your Honor
2020•TV
as Father Jay
Perry Mason
2020•TV
as Thomas Milligan
Hammer
2019•Movie
as Chris Davis
Marriage Story
2019•Movie
as Carter Mitchum
The Kelly Clarkson Show
2019•TV
as Self
Ready or Not
2019•Movie
as Alex
City on a Hill
2019•TV
as Jimmy Ryan
Goalie
2019•Movie
as Terry Sawchuk
State Like Sleep
2019•Movie
as Darren
The Front Runner
2018•Movie
as Billy Shore
Bad Times at the El Royale
2018•Movie
as Larsen Rogers
Kin
2018•Movie
as Jake
The Darkest Minds
2018•Movie
as Rob Meadows
How It Ends
2018•Movie
as Jeremiah
Anon
2018•Movie
as Cyrus Frear
Parallel
2018•Movie
as Josh
The Last Tycoon
2017•TV
as Max Miner
Wanderer
2016•Movie
as Eric
The Dark Stranger
2016•Movie
as Mark
How to Plan an Orgy in a Small Town
2015•Movie
as Bruce Buck
Killjoys
2015•TV
as Grayson Hicks
End of Days, Inc.
2015•Movie
as Jason
Dennis
2015•Movie
as Dennis
Halt and Catch Fire
2014•TV
as Tom Rendon
Beat Down
2012•Movie
as Michael
Snarbuckled
2010•Movie
as Jacob O'Higgins
Grown Up Movie Star
2010•Movie
as Will
Republic of Doyle
2010•TV
as Des Courtney
Warehouse 13
2009•TV
as Jerry Hoffler
Heartless Disappearance Into Labrador Seas
2008•Movie
as Charlie
The One That Got Away
2008•Movie
as Tommy Palchek
The Four Horsemen
2008•Movie
as Eric Rollins