Mark O'Brien

Acting·May 7, 1984· St. Johns, Newfoundland, Canada

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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).

Film	Credit
The Outer Threat2026 · Actor	Actor
The Voices of Our Mother2026 · William, Director, Writer	William, Director, Writer
Nuremberg2025 · Colonel John Amen	Colonel John Amen
The Memory Keeper2025 · Elizeus Carrier	Elizeus Carrier
Shadow of God2025 · Mason Harper	Mason Harper
Seven Veils2025 · Paul	Paul
Topper2025 · Topper	Topper
Blue Bayou2021 · Ace	Ace
The Righteous2021 · Aaron Smith, Director, Writer	Aaron Smith, Director, Writer
Hammer2019 · Chris Davis	Chris Davis
Marriage Story2019 · Carter Mitchum	Carter Mitchum
Ready or Not2019 · Alex	Alex
Goalie2019 · Terry Sawchuk	Terry Sawchuk
State Like Sleep2019 · Darren	Darren
The Front Runner2018 · Billy Shore	Billy Shore
Bad Times at the El Royale2018 · Larsen Rogers	Larsen Rogers
Kin2018 · Jake	Jake
The Darkest Minds2018 · Rob Meadows	Rob Meadows
How It Ends2018 · Jeremiah	Jeremiah
Anon2018 · Cyrus Frear	Cyrus Frear
Parallel2018 · Josh	Josh
Arrival2016 · Captain Marks	Captain Marks
Wanderer2016 · Eric, Director, Producer	Eric, Director, Producer
The Dark Stranger2016 · Mark	Mark
How to Plan an Orgy in a Small Town2015 · Bruce Buck	Bruce Buck
End of Days, Inc.2015 · Jason	Jason
Dennis2015 · Dennis, Producer	Dennis, Producer
SSweetieface2013 · Sam, Director, Producer	Sam, Director, Producer
Beat Down2012 · Michael	Michael
Kathy2011 · Director	Director
Snarbuckled2010 · Jacob O'Higgins	Jacob O'Higgins
BBrad2010 · Brad, Producer	Brad, Producer
Grown Up Movie Star2010 · Will	Will
MMum's the Word2009 · Curtis	Curtis
QQuiet at Dawn2009 · Watts	Watts
CCut from the Same Cloth2009 · Jack Cochrane	Jack Cochrane
Heartless Disappearance Into Labrador Seas2008 · Charlie	Charlie
EEpilogue2008 · Henry	Henry
PPretty Girls2008 · Director, Writer	Director, Writer
The One That Got Away2008 · Tommy Palchek	Tommy Palchek
The Four Horsemen2008 · Eric Rollins	Eric Rollins
BBetter PeopleJohn, Director, Writer	John, Director, Writer
NNice PeopleActor, Director	Actor, Director
GGood in the RoomCharlie, Writer	Charlie, Writer
Little OneActor	Actor