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
Nuremberg
as Col. John Amen
The Voices of Our Mother
as William
Falsehood
as Elizeus Carrier
(2025)
Seven Veils
as Paul
(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)
State Like Sleep
as Darren
(2019)
Hammer
as Chris Davis
(2018)
The Darkest Minds
as Rob Meadows
(2018)
Bad Times at the El Royale
as Larsen Rogers
(2018)
Parallel
as Josh
(2018)
Anon
as Cyrus Frear
(2018)
How It Ends
as Jeremiah
(2018)
Kin
as Jake
(2018)
The Front Runner
as Billy Shore
(2016)
Arrival
as Captain Marks
(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
(2012)
Beat Down
as Michael
(2010)
Snarbuckled
as Jacob O'Higgins
(2010)
Brad
as Brad
(2009)
Quiet at Dawn
as Watts
(2009)
Grown Up Movie Star
as Will
(2009)
Mum's the Word
as Curtis
(2009)
Cut from the Same Cloth
as Jack Cochrane
(2008)
(2008)
The Four Horsemen
as Eric Rollins
(2008)
The One That Got Away
as Tommy Palchek
(2008)
Epilogue
as Henry
Crew
The Voices of Our Mother
Director, Writer
(2021)
The Righteous
Director, Writer, Executive Producer
(2019)
Goalie
Executive Producer
(2016)
Wanderer
Director
(2015)
Dennis
Producer
(2011)
Kathy
Director
(2010)
Brad
Producer, Editor