Mark O'Brien
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).
As actor 57
The Kelly Clarkson Show
2019
Hannibal
2013
Warehouse 13
2009
Arrival
2016
Halt and Catch Fire
2014
Perry Mason
2020
Ready or Not
2019
Republic of Doyle
2010
Killjoys
2015
City on a Hill
2019
Your Honor
2020
Nuremberg
2025
The Copenhagen Test
2025
Bad Times at the El Royale
2018
Marriage Story
2019
61st Street
2022
How It Ends
2018
The Sticky
2024
The Darkest Minds
2018
The Last Tycoon
2017
Anon
2018
The Outer Threat
2026
Kin
2018
Blue Bayou
2021
Shadow of God
2025
The Front Runner
2018
Seven Veils
2025
Beat Down
2012
Parallel
2018
How to Plan an Orgy in a Small Town
2015
The Dark Stranger
2016
The Memory Keeper
2025
Epilogue
2008
Hammer
2019
Little One
Dennis
2015
The Voices of Our Mother
2026
Better People
End of Days, Inc.
2015
Good in the Room
State Like Sleep
2019
Brad
2010
Goalie
2019
The Righteous
2021
Topper
2025
The Four Horsemen
2008
Quiet at Dawn
2009
Nice People
The One That Got Away
2008
Wanderer
2016
Heartless Disappearance Into Labrador Seas
2008
Grown Up Movie Star
2010
Sweetieface
2013
Soma
Mum's the Word
2009
Cut from the Same Cloth
2009
Snarbuckled
2010
