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
Acting56
tvThe Copenhagen Test
2025
Edmund Cobb
movieNuremberg
2025
Colonel John Amen
movieThe Memory Keeper
2025
Elizeus Carrier
movieShadow of God
2025
Mason Harper
movieTopper
2025
Topper
tvThe Sticky
2024
Charlie
tv61st Street
2022
Officer Logan
movieThe Righteous
2021
Aaron Smith
tvYour Honor
2020
Father Jay
tvPerry Mason
2020
Thomas Milligan
movieHammer
2019
Chris Davis
movieMarriage Story
2019
Carter Mitchum
tvCity on a Hill
2019
Jimmy Ryan
movieGoalie
2019
Terry Sawchuk
movieThe Front Runner
2018
Billy Shore
movieBad Times at the El Royale
2018
Larsen Rogers
movieKin
2018
Jake
movieThe Darkest Minds
2018
Rob Meadows
movieHow It Ends
2018
Jeremiah
movieAnon
2018
Cyrus Frear
tvThe Last Tycoon
2017
Max Miner
movieArrival
2016
Captain Marks
tvKilljoys
2015
Grayson Hicks
movieDennis
2015
Dennis
tvHalt and Catch Fire
2014
Tom Rendon
tvHannibal
2013
Randall Tier
movieBeat Down
2012
Michael
movieSnarbuckled
2010
Jacob O'Higgins
tvRepublic of Doyle
2010
Des Courtney
tvWarehouse 13
2009
Jerry Hoffler
movieThe One That Got Away
2008
Tommy Palchek
movieThe Four Horsemen
2008
Eric Rollins
Directing8
movieThe Righteous
2021
Director
movieWanderer
2016
Director
Sweetieface
2013
Director
movieKathy
2011
Director
Better People
Director
Nice People
Director
Production7
movieThe Righteous
2021
Executive Producer
movieGoalie
2019
Executive Producer
movieWanderer
2016
Producer
movieDennis
2015
Producer
Sweetieface
2013
Producer
Brad
2010
Producer
Good in the Room
Executive Producer
Writing5
Editing4
Crew1
Pretty Girls
2008
Cinematography