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Acting
Mark O'Brien
Born: 1984-05-07 in St. Johns, Newfoundland, Canada
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).
Rated Filmography (28)
Sorted by Score7.7
Marriage Story
2019
7.6
Arrival
2016
7.6
Nuremberg
2025
7.4
Blue Bayou
2021
7.1
Ready or Not
2019
7.0
The Darkest Minds
2018
6.8
Bad Times at the El Royale
2018
6.8
Goalie
2019
6.4
The Voices of Our Mother
2026
6.3
The Righteous
2021
6.1
Kin
2018
6.0
Anon
2018
6.0
Parallel
2018
5.9
The Front Runner
2018
5.9
The Four Horsemen
2008
5.8
End of Days, Inc.
2015
5.7
The Outer Threat
2026
5.7
Shadow of God
2025
5.5
Seven Veils
2025
5.4
Hammer
2019
5.3
Topper
2025
5.3
How It Ends
2018
5.1
Grown Up Movie Star
2010
5.1
How to Plan an Orgy in a Small Town
2015
5.0
Wanderer
2016
4.9
The Dark Stranger
2016
4.7
State Like Sleep
2019
4.3
The One That Got Away
2008