Mark O'Brien
Born in St. Johns, Newfoundland, Canada — May 07 1984
Connect
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).
Photos
Mark O'Brien's Credits
Browse acting and crew credits across movies and TV — filter and sort to find specific roles.
Warehouse 13
Jerry Hoffler
Hannibal
Randall Tier
Ready or Not
Alex Le Domas
Republic of Doyle
Des Courtney
Nuremberg
Colonel John Amen
Killjoys
Grayson Hicks
Halt and Catch Fire
Tom Rendon
Your Honor
Father Jay
Arrival
Captain Marks
Perry Mason
Thomas Milligan
City on a Hill
Jimmy Ryan
The Copenhagen Test
Edmund Cobb
61st Street
Officer Logan
Marriage Story
Carter Mitchum
Kin
Jake
The Last Tycoon
Max Miner
The Sticky
Charlie
Bad Times at the El Royale
Larsen Rogers
How It Ends
Jeremiah
The Darkest Minds
Rob Meadows
Anon
Cyrus Frear
Shadow of God
Mason Harper
Parallel
Josh
Seven Veils
Paul
The Front Runner
Billy Shore
Blue Bayou
Ace
How to Plan an Orgy in a Small Town
Bruce Buck
Hammer
Chris Davis
State Like Sleep
Darren
Goalie
Terry Sawchuk
The Righteous
Aaron Smith
Beat Down
Michael
Falsehood
Elizeus Carrier
Topper
Topper
The Dark Stranger
Mark
Quiet at Dawn
Watts
The Outer Threat
The Four Horsemen
Eric Rollins
Wanderer
Eric
The One That Got Away
Tommy Palchek
Snarbuckled
Jacob O'Higgins
Grown Up Movie Star
Will
Nice People
The Voices of Our Mother
William
Kathy
Directing
Pretty Girls
Directing
Epilogue
Henry
End of Days, Inc.
Jason
Heartless Disappearance Into Labrador Seas
Charlie
Dennis
Dennis
Mum's the Word
Curtis
Brad
Brad
Cut from the Same Cloth
Jack Cochrane
Better People
John
Sweetieface
Sam