Birthday
1984/05/07 (40 years old)
Gender
Male
Place of Birth
St. Johns, Newfoundland, Canada
Also know as
Mark O’Brien
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).
(2025) Seven Veils
as Paul
(2008) The Four Horsemen
as Eric Rollins
(2009) Grown Up Movie Star
as Will
(2009) Cut from the Same Cloth
as Jack Cochrane
(2008) Heartless Disappearance Into Labrador Seas
as Charlie
Shadow of God
as Mason Harper
(2010) Snarbuckled
as Jacob O'Higgins
(2016) The Dark Stranger
as Mark
Nuremberg
as Col. John Amen
(2015) End of Days, Inc.
as Jason
The Voices of Our Mother
as William
(2012) Beat Down
as Michael
(2016) Arrival
as Captain Marks
(2018) Anon
as Cyrus Frear
(2019) State Like Sleep
as Darren
(2018) Kin
as Jake
(2018) Parallel
as Josh
(2018) The Darkest Minds
as Rob Meadows
(2015) How to Plan an Orgy in a Small Town
as Bruce Buck
(2018) Bad Times at the El Royale
as Larsen Rogers
(2019) Marriage Story
as Carter Mitchum
(2018) The Front Runner
as Billy Shore
(2018) How It Ends
as Jeremiah
(2019) Goalie
as Terry Sawchuk
(2019) Hammer
as Chris Davis
(2019) Ready or Not
as Alex Le Domas
(2021) Blue Bayou
as Ace
(2021) The Righteous
as Aaron Smith
Mum's the Word
as Curtis
(2008) Epilogue
as Henry
(2010) Brad
as Brad
The Embers and the Stars
as ---
(2015) Dennis
as Dennis
Falsehood
as Elizeus Carrier
(2020) Perry Mason
as Thomas Milligan
(2010) Republic of Doyle
as Des Courtney
(2017) The Last Tycoon
as Max Miner
(2022) 61st Street
as Officer Logan
(2015) Killjoys
as Grayson Hicks
(2019) The Kelly Clarkson Show
as ---
(2019) City on a Hill
as Jimmy Ryan
(2013) Hannibal
as Randall Tier
(2009) Warehouse 13
as Jerry Hoffler
(2014) Halt and Catch Fire
as Tom Rendon
(2020) Your Honor
as Father Jay
Copenhagen
as Cobb
(2024) The Sticky
as Charlie