7.7
7.7
Marriage Story
2019
as Carter Mitchum
Mark O'Brien
Acting
Born:May 7, 1984(age 42)
Birthplace:St. Johns, Newfoundland, Canada
Nationality:Canada
Education:Memorial University of Newfoundland, Marymount Manhattan College
N/A
CommunityBiography
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).
Filmography (43 movies)
7.6
7.6
Arrival
2016
as Captain Marks
7.6
7.6
Nuremberg
2025
as Colonel John Amen
7.5
7.5
Blue Bayou
2021
as Ace
7.1
7.1
Ready or Not
2019
as Alex
7.0
7.0
Goalie
2019
Executive Producer
7.0
7.0
The Darkest Minds
2018
as Rob Meadows
6.8
6.8
Bad Times at the El Royale
2018
as Larsen Rogers
6.2
6.2
The Righteous
2021
Executive Producer
6.1
6.1
Kin
2018
as Jake
6.0
6.0
Parallel
2018
as Josh
6.0
6.0
Anon
2018
as Cyrus Frear
5.9
5.9
The Front Runner
2018
as Billy Shore
5.8
5.8
The Outer Threat
2026
5.6
5.6
Seven Veils
2025
as Paul
5.6
5.6
Shadow of God
2025
as Mason Harper
5.6
5.6
End of Days, Inc.
2015
as Jason
5.4
5.4
Hammer
2019
as Chris Davis
5.3
5.3
Topper
2025
as Topper
5.3
5.3
How It Ends
2018
as Jeremiah
5.1
5.1
Grown Up Movie Star
2009
as Will
5.1
5.1
How to Plan an Orgy in a Small Town
2015
as Bruce Buck
4.9
4.9
The Dark Stranger
2016
as Mark
4.7
4.7
State Like Sleep
2019
as Darren
4.3
4.3
The One That Got Away
2008
as Tommy Palchek
3.8
3.8
The Four Horsemen
2008
as Eric Rollins
Epilogue
2008
as Henry
Brad
2010
Producer
Dennis
2015
Producer
Falsehood
2025
as Elizeus Carrier
Quiet at Dawn
2009
as Watts
Nice People
TBA
Director
Beat Down
2012
as Michael
The Voices of Our Mother
TBA
Writer
Better People
TBA
Writer
Heartless Disappearance Into Labrador Seas
2008
as Charlie
Snarbuckled
2010
as Jacob O'Higgins
Sweetieface
2013
Producer
Cut from the Same Cloth
2009
as Jack Cochrane
Wanderer
2016
Producer
Mum's the Word
2009
as Curtis
Kathy
2011
Director
Pretty Girls
2008
Writer
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