Mark O'Brien
Acting
🎂 1984-05-07
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).
Cast credits(53)
Mason Harper
2025
Self
2019
Jerry Hoffler
2009
Randall Tier
2013
Captain Marks
2016
Tom Rendon
2014
Grayson Hicks
2015
Father Jay
2020
Des Courtney
2010
Thomas Milligan
2020
Rob Meadows
2018
Alex Le Domas
2019
Jimmy Ryan
2019
Carter Mitchum
2019
Charlie
2024
Jeremiah
2018
Josh
2018
Larsen Rogers
2018
Cyrus Frear
2018
Max Miner
2017
Jake
2018
Paul
2025
Billy Shore
2018
Officer Logan
2022
Bruce Buck
2015
Colonel John Amen
2025
Eric
2016
Ace
2021
Aaron Smith
2021
Tommy Palchek
2008
Charlie
2008
Terry Sawchuk
2019
Michael
2012
Chris Davis
2019
Cobb
Will
2009
Dennis
2015
Watts
2009
William
Eric Rollins
2008
Darren
2019
Jack Cochrane
2009
Elizeus Carrier
Jason
2015
Brad
2010
Curtis
2009
John
Mark
2016
Henry
2008
Sam
2013
Jacob O'Higgins
2010
Topper
2025
