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BornMay 7, 1984 (age 42)
Place of birth St. Johns, Newfoundland, Canada
Film credits44
Mark O'Brien
AliveKnown for Acting
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).
Filmography
The Outer Threat
2026
as Daniel Ashford
The Voices of Our Mother
2026
as William
Nuremberg
2025
as Colonel John Amen
The Memory Keeper
2025
as Elizeus Carrier
Shadow of God
2025
as Mason Harper
Seven Veils
2025
as Paul
Topper
2025
as Topper
Blue Bayou
2021
as Ace
The Righteous
2021
as Aaron Smith
Hammer
2019
as Chris Davis
Marriage Story
2019
as Carter Mitchum
Ready or Not
2019
as Alex
Goalie
2019
as Terry Sawchuk
State Like Sleep
2019
as Darren
The Front Runner
2018
as Billy Shore
Bad Times at the El Royale
2018
as Larsen Rogers
Kin
2018
as Jake
The Darkest Minds
2018
as Rob Meadows
How It Ends
2018
as Jeremiah
Anon
2018
as Cyrus Frear
Parallel
2018
as Josh
Arrival
2016
as Captain Marks
Wanderer
2016
as Eric
The Dark Stranger
2016
as Mark