Mark O'Brien
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 (53 titles)
4.0MovieThe Outer Threat
2026
6.4MovieThe Voices of Our Mother
William · 2026
6.5ShowThe Copenhagen Test
Edmund Cobb · 2025
7.6MovieNuremberg
Colonel John Amen · 2025
MovieThe Memory Keeper
Elizeus Carrier · 2025
5.7MovieShadow of God
Mason Harper · 2025
5.7MovieSeven Veils
Paul · 2025
5.3MovieTopper
Topper · 2025
7.2ShowThe Sticky
Charlie · 2024
6.6Show61st Street
Officer Logan · 2022
7.4MovieBlue Bayou
Ace · 2021
6.3MovieThe Righteous
Aaron Smith · 2021
8.1ShowYour Honor
Father Jay · 2020
7.2ShowPerry Mason
Thomas Milligan · 2020
5.4MovieHammer
Chris Davis · 2019
7.7MovieMarriage Story
Carter Mitchum · 2019
6.3ShowThe Kelly Clarkson Show
Self · 2019
7.1MovieReady or Not
Alex · 2019
7.3ShowCity on a Hill
Jimmy Ryan · 2019
6.9MovieGoalie
Terry Sawchuk · 2019
4.7MovieState Like Sleep
Darren · 2019
5.9MovieThe Front Runner
Billy Shore · 2018
6.8MovieBad Times at the El Royale
Larsen Rogers · 2018
6.1MovieKin
Jake · 2018
7.0MovieThe Darkest Minds
Rob Meadows · 2018
5.3MovieHow It Ends
Jeremiah · 2018
6.0MovieAnon
Cyrus Frear · 2018
6.0MovieParallel
Josh · 2018
7.0ShowThe Last Tycoon
Max Miner · 2017
7.6MovieArrival
Captain Marks · 2016