Mark O'Brien
Personal Info
Known for
Acting
Gender
Male
Birthday
1984-05-07 (41 years old)
Place of Birth
St. Johns, Newfoundland, Canada
Mark O'Brien
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).
Acting
Falsehood
as Elizeus Carrier
The Voices of Our Mother
as William
Better People
as John
(2025)
Shadow of God
as Mason Harper
(2025)
Nuremberg
as Colonel John Amen
(2025)
Topper
as Topper
(2025)
Seven Veils
as Paul
(2021)
Blue Bayou
as Ace
(2021)
The Righteous
as Aaron Smith
(2019)
Ready or Not
as Alex Le Domas
(2019)
Marriage Story
as Carter Mitchum
(2019)
Goalie
as Terry Sawchuk
(2019)
Hammer
as Chris Davis
(2019)
State Like Sleep
as Darren
(2018)
How It Ends
as Jeremiah
(2018)
Kin
as Jake
(2018)
The Darkest Minds
as Rob Meadows
(2018)
Bad Times at the El Royale
as Larsen Rogers
(2018)
Anon
as Cyrus Frear
(2018)
The Front Runner
as Billy Shore
(2018)
Parallel
as Josh
(2016)
Arrival
as Captain Marks
(2016)
Wanderer
as Eric
(2016)
The Dark Stranger
as Mark
(2015)
How to Plan an Orgy in a Small Town
as Bruce Buck
(2015)
End of Days, Inc.
as Jason
(2015)
Dennis
as Dennis
(2013)
Sweetieface
as Sam
(2012)
Beat Down
as Michael
(2010)
Snarbuckled
as Jacob O'Higgins
(2010)
Brad
as Brad
(2009)
Grown Up Movie Star
as Will
(2009)
Mum's the Word
as Curtis
(2009)
Cut from the Same Cloth
as Jack Cochrane
(2009)
Quiet at Dawn
as Watts
(2008)
The One That Got Away
as Tommy Palchek
(2008)
(2008)
The Four Horsemen
as Eric Rollins
(2008)
Epilogue
as Henry
Crew
The Voices of Our Mother
Director, Writer
Better People
Director, Writer, Editor
Nice People
Director
(2021)
The Righteous
Writer, Director, Executive Producer
(2019)
Goalie
Executive Producer
(2016)
Wanderer
Director, Producer
(2015)
Dennis
Producer
(2013)
Sweetieface
Director, Producer, Editor
(2011)
Kathy
Director
(2010)
Brad
Producer, Editor
(2008)
Pretty Girls
Director, Writer, Editor, Cinematography