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Mark O'Brien
Mark O'Brien

Mark O'Brien

ActingBorn May 7, 1984 (age 42) St. Johns, Newfoundland, Canada

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).

Filmography

2026Movie
2025
The Copenhagen Test

as Edmund Cobb

TV
2025
Nuremberg

as Colonel John Amen

Movie
2025
The Memory Keeper

as Elizeus Carrier

Movie
2025
Shadow of God

as Mason Harper

Movie
2025Movie
2025
Topper

as Topper

Movie
2024
The Sticky

as Charlie

TV
2022
61st Street

as Officer Logan

TV
2021Movie
2021
The Righteous

as Aaron Smith

Movie
2020
Your Honor

as Father Jay

TV
2020
Perry Mason

as Thomas Milligan

TV
2019
Hammer

as Chris Davis

Movie
2019
Marriage Story

as Carter Mitchum

Movie
2019Movie
2019
City on a Hill

as Jimmy Ryan

TV
2019
Goalie

as Terry Sawchuk

Movie
2019Movie
2018
The Front Runner

as Billy Shore

Movie
2018Movie
2018
Kin

as Jake

Movie
2018
The Darkest Minds

as Rob Meadows

Movie
2018
How It Ends

as Jeremiah

Movie
2018
Anon

as Cyrus Frear

Movie
2018
Parallel

as Josh

Movie
2017
The Last Tycoon

as Max Miner

TV
2016
Arrival

as Captain Marks

Movie
2016
Wanderer

as Eric

Movie
2016Movie
2015
Killjoys

as Grayson Hicks

TV
2015Movie
2015
Dennis

as Dennis

Movie
2014
Halt and Catch Fire

as Tom Rendon

TV
2013
Hannibal

as Randall Tier

TV
2013Movie
2012
Beat Down

as Michael

Movie
2010
Snarbuckled

as Jacob O'Higgins

Movie
2010
Brad

as Brad

Movie
2010Movie
2010
Republic of Doyle

as Des Courtney

TV
2009Movie
2009Movie
2009
Warehouse 13

as Jerry Hoffler

TV
2009
Cut from the Same Cloth

as Jack Cochrane

Movie
2008
Epilogue

as Henry

Movie
2008
The One That Got Away

as Tommy Palchek

Movie
2008
The Four Horsemen

as Eric Rollins

Movie
Movie
Movie
Movie
Movie

Personal Info

DepartmentActing
BirthdayMay 7, 1984
Place of Birth St. Johns, Newfoundland, Canada
Popularity0.9