Personal Info
Known For
Acting
Gender
Male
Birthday
May 7, 1984 (41 years old)
Place of Birth
St. Johns, Newfoundland, Canada
Also Known As
- Mark O’Brien
Mark O'Brien
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).
Known For
Acting
6.4
The Copenhagen Test
2025
7.4
Nuremberg
2025
5.7
Shadow of God
2025
5.6
Seven Veils
2025
7.2
The Sticky
2024
6.9
61st Street
2022
7.5
Blue Bayou
2021
6.2
The Righteous
2021
8.1
Your Honor
2020
7.2
Perry Mason
2020
5.4
Hammer
2019
7.7
Marriage Story
2019
6.4
The Kelly Clarkson Show
2019
7.0
Ready or Not
2019
7.2
City on a Hill
2019
4.7
State Like Sleep
2019
5.9
The Front Runner
2018
6.8
Bad Times at the El Royale
2018
6.1
Kin
2018
7.0
The Darkest Minds
2018
5.3
How It Ends
2018
6.0
Anon
2018
6.0
Parallel
2018
7.0
The Last Tycoon
2017
