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Mark O'Brien
Born · May 7, 1984 (40 years old)
Known For: Acting
Place of Birth: St. Johns, Newfoundland, Canada
Bio
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).
Shadow of God
Mason Harper
0.0
2025
Seven Veils
Paul
6.8
2025
Topper
Topper
0.0
2025
The Sticky
Charlie · (1 episode)
7.2
2024
61st Street
Officer Logan · (8 episodes)
6.6
2022
Blue Bayou
Ace
7.5
2021
The Righteous
Aaron Smith
6.3
2021
Your Honor
Father Jay · (3 episodes)
8.1
2020
Perry Mason
Thomas Milligan · (7 episodes)
7.3
2020
Hammer
Chris Davis
5.4
2019
Marriage Story
Carter Mitchum
7.7
2019
The Kelly Clarkson Show
(1 episode)
6.3
2019
Ready or Not
Alex Le Domas
7.0
2019
City on a Hill
Jimmy Ryan · (14 episodes)
7.3
2019
Goalie
Terry Sawchuk
6.8
2019
State Like Sleep
Darren
4.9
2019
The Front Runner
Billy Shore
5.9
2018
Bad Times at the El Royale
Larsen Rogers
6.8
2018
Kin
Jake
6.1
2018
The Darkest Minds
Rob Meadows
7.0
2018
How It Ends
Jeremiah
5.3
2018
Anon
Cyrus Frear
6.0
2018
Parallel
Josh
6.0
2018
The Last Tycoon
Max Miner · (9 episodes)
7.2
2017
Arrival
Captain Marks
7.6
2016
The Dark Stranger
Mark
5.1
2016
How to Plan an Orgy in a Small Town
Bruce Buck
5.2
2015
Killjoys
Grayson Hicks · (1 episode)
6.9
2015
End of Days, Inc.
Jason
5.6
2015
Dennis
Dennis
0.0
2015
Halt and Catch Fire
Tom Rendon · (15 episodes)
7.9
2014
Hannibal
Randall Tier · (2 episodes)
8.2
2013
Beat Down
Michael
0.0
2012
Snarbuckled
Jacob O'Higgins
0.0
2010
Brad
Brad
0.0
2010
Republic of Doyle
Des Courtney · (77 episodes)
6.9
2010
Mum's the Word
Curtis
0.0
2009
Grown Up Movie Star
Will
5.4
2009
Quiet at Dawn
Watts
0.0
2009
Cut from the Same Cloth
Jack Cochrane
0.0
2009
Heartless Disappearance Into Labrador Seas
Charlie
0.0
2008
Epilogue
Henry
0.0
2008
The Four Horsemen
Eric Rollins
3.9
2008
Nuremberg
Col. John Amen
0.0
The Voices of Our Mother
William
0.0
The Embers and the Stars
0.0
Falsehood
Elizeus Carrier
0.0
Warehouse 13
Jerry Hoffler · (1 episode)
7.7
2009
The One That Got Away
Tommy Palchek
4.3
2008
Copenhagen
Cobb · (2 episodes)
0.0