Mark O'Brien
Canadian actor and director · Canada · On the map · Actors · Born 1984 · age 42
Mark O'Brien is a Canadian actor and director best known for his roles as Des Courtney in Republic of Doyle (2010-2014) and Tom Rendon in Halt and Catch Fire (2015-2016).
Mark O'Brien is read about 478 times a day, in 16 languages.
A typical day, 30 days to 8 November 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 114 days, one point a day.
Something wrong?A life in dates
The Outer ThreatFilm, Daniel Ashford
The Voices of Our MotherFilm, 2026Director, Writer2025
The Copenhagen TestSeries, Edmund Cobb
NurembergFilm, 2025Colonel John Amen2024
The StickySeries, Charlie2022
61st StreetSeries, Officer Logan2021
Blue BayouFilm, Ace2020
Perry MasonSeries, Thomas Milligan2019
City on a HillSeries, Jimmy Ryan
GoalieFilm, 2019Producer2018
AnonFilm, Cyrus Frear2016
ArrivalFilm, Captain Marks2015
KilljoysSeries, Grayson Hicks
DennisFilm, 2015Producer2014
Halt and Catch FireSeries, Tom Rendon2013
HannibalSeries, Randall Tier2012
Beat DownFilm, Michael2011
KathyFilm, Director2010
Republic of DoyleSeries, Des Courtney
Grown Up Movie StarFilm, 2010Will2009
Warehouse 13Series, Jerry HofflerQuiet at DawnFilm, 2009Watts2008EpilogueFilm, Henry
Heartless Disappearance Into Labrador SeasFilm, 2008Charlie1984Born7 May 1984People around Mark
Shawn Levy Produced Arrival and The Darkest Minds
James Vanderbilt Produced Ready or Not (2019)
Andy Jones Also in Heartless Disappearance Into Labrador Seas (2008)
Molly Ephraim Also in Halt and Catch Fire and Perry Mason
Mayko Nguyen Also in Anon and The Righteous
Shawn Doyle Also in The Memory Keeper (2025)
Dan Levine Produced The Darkest Minds (2018)
Joel Thomas Hynes Also in Heartless Disappearance Into Labrador Seas (2008)
Forest Whitaker Also in How It Ends and Arrival
Atom Egoyan Produced Seven Veils (2025)
Andrew Niccol Directed Anon (2018)
Noah Baumbach Directed Marriage Story (2019)
Shea Whigham Also in Perry Mason
Katharine Isabelle Also in How to Plan an Orgy in a Small Town (2015)
Kevin Pollak Also in Goalie and The Front Runner
Juan J. Campanella Directed Halt and Catch Fire
Kerry Bishé Also in Halt and Catch Fire and How It Ends
Deniz Gamze Ergüven Directed Perry Mason
Tim Van Patten Directed Perry Mason
Toby Huss Also in Halt and Catch Fire and The Front Runner
Jennifer Yuh Nelson Directed The Darkest Minds (2018)
Michael Cuesta Directed City on a Hill
Kristian Bruun Also in How to Plan an Orgy in a Small Town (2015)
Tyler Gillett Directed Ready or Not (2019)
Mark O'BrienPartners
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Correct this familyKnown for
View all 40 titles
Marriage Story 2019
Nuremberg 2025
Arrival 2016
Blue Bayou 2021
Ready or Not 2019
Filmography 40
83 credits on file
Television 14
Media & music
Photos 1
About this person
He won the Canadian Screen Award for Best Actor at the 8th Canadian Screen Awards for his performance as Terry Sawchuk in the biographical drama film Goalie (2019).
