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).
Photos
Arrival
2016
Captain Marks
Marriage Story
2019
Carter Mitchum
Ready or Not
2019
Alex Le Domas
Bad Times at the El Royale
2018
Larsen Rogers
The Darkest Minds
2018
Rob Meadows
Hannibal
2013
Randall Tier
How It Ends
2018
Jeremiah
Anon
2018
Cyrus Frear
Your Honor
2020
Father Jay
Kin
2018
Jake
Nuremberg
2025
Colonel John Amen
Warehouse 13
2009
Jerry Hoffler
Halt and Catch Fire
2014
Tom Rendon
Killjoys
2015
Grayson Hicks
The Front Runner
2018
Billy Shore
Perry Mason
2020
Thomas Milligan
Blue Bayou
2021
Ace
Parallel
2018
Josh
City on a Hill
2019
Jimmy Ryan
How to Plan an Orgy in a Small Town
2015
Bruce Buck