Mark O'Brien
Acting
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
Arrival
2016
Ready or Not
2019
Nuremberg
2025
Marriage Story
2019
Kin
2018
How It Ends
2018
The Front Runner
2018
Beat Down
2012
Anon
2018
Kathy
2011
Parallel
2018
Blue Bayou
2021
The Outer Threat
2026
Seven Veils
2025
Shadow of God
2025
Dennis
2015