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)
Seven Veils
as Paul
(2025)
Nuremberg
as Col. John Amen
(2025)
Shadow of God
as Mason Harper
(2025)
Topper
as Topper
(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)
Anon
as Cyrus Frear
(2018)
The Darkest Minds
as Rob Meadows
(2018)
Bad Times at the El Royale
as Larsen Rogers
(2018)
How It Ends
as Jeremiah
(2018)
Kin
as Jake
(2018)
Parallel
as Josh
(2018)
The Front Runner
as Billy Shore
(2016)
Arrival
as Captain Marks
(2016)
The Dark Stranger
as Mark
(2016)
Wanderer
as Eric
(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)
Quiet at Dawn
as Watts
(2009)
Cut from the Same Cloth
as Jack Cochrane
(2009)
Mum's the Word
as Curtis
(2008)
The Four Horsemen
as Eric Rollins
(2008)
(2008)
The One That Got Away
as Tommy Palchek
(2008)
Epilogue
as Henry
Crew
The Voices of Our Mother
Director, Writer
Better People
Director, Writer, Editor
(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