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Mark O'Brien

Mark O'Brien

Birthday: 1984-05-07 | Place of Birth: Canada

Mark O'Brien (born May 7, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle and Tom Rendon in Halt and Catch Fire.

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Known For

Acting

Year
Title

Role

2019
Ready or Not

as    Alex Le Domas

2019
Marriage Story

as    Carter

2019
State Like Sleep

as    Darren

2019
City on a Hill

as    Jimmy Ryan

2018
Kin

as    Jake

2018
How It Ends

as    Jeremiah

2018
Parallel

as    Josh

2018
The Darkest Minds

as    Rob Meadows

2017
The Last Tycoon

as    Max Miner

2016
The Dark Stranger

as    Mark

2015
End of Days, Inc.

as    Jason

2014
Republic of Doyle

as    Des Courtney

2008
The Four Horsemen

as    Eric Rollins