Mark O'Brien
Actor · Born 1984-05-07
Acting 51
The Outer Threat
2026 · Daniel Ashford
The Voices of Our Mother
2026 · William
The Copenhagen Test
2025 · Edmund Cobb
Nuremberg
2025 · Colonel John Amen
The Memory Keeper
2025 · Elizeus Carrier
Shadow of God
2025 · Mason Harper
Seven Veils
2025 · Paul
Topper
2025 · Topper
The Sticky
2024 · Charlie
61st Street
2022 · Officer Logan
Blue Bayou
2021 · Ace
The Righteous
2021 · Aaron Smith
Your Honor
2020 · Father Jay
Perry Mason
2020 · Thomas Milligan
Hammer
2019 · Chris Davis
Marriage Story
2019 · Carter Mitchum
Ready or Not
2019 · Alex
City on a Hill
2019 · Jimmy Ryan
Goalie
2019 · Terry Sawchuk
State Like Sleep
2019 · Darren
The Front Runner
2018 · Billy Shore
Bad Times at the El Royale
2018 · Larsen Rogers
Kin
2018 · Jake
The Darkest Minds
2018 · Rob Meadows
How It Ends
2018 · Jeremiah
Anon
2018 · Cyrus Frear
Parallel
2018 · Josh
The Last Tycoon
2017 · Max Miner
Arrival
2016 · Captain Marks
Wanderer
2016 · Eric
The Dark Stranger
2016 · Mark
How to Plan an Orgy in a Small Town
2015 · Bruce Buck
Killjoys
2015 · Grayson Hicks
End of Days, Inc.
2015 · Jason
Dennis
2015 · Dennis
Halt and Catch Fire
2014 · Tom Rendon
Hannibal
2013 · Randall Tier
Sweetieface
2013 · Sam
Beat Down
2012 · Michael
Snarbuckled
2010 · Jacob O'Higgins
Brad
2010 · Brad
Grown Up Movie Star
2010 · Will
Republic of Doyle
2010 · Des Courtney
Mum's the Word
2009 · Curtis
Quiet at Dawn
2009 · Watts
Warehouse 13
2009 · Jerry Hoffler
Cut from the Same Cloth
2009 · Jack Cochrane
Heartless Disappearance Into Labrador Seas
2008 · Charlie
Epilogue
2008 · Henry
The One That Got Away
2008 · Tommy Palchek
The Four Horsemen
2008 · Eric Rollins
Writing 3
The Voices of Our Mother
2026
The Righteous
2021
Pretty Girls
2008
Directing 6
The Voices of Our Mother
2026
The Righteous
2021
Wanderer
2016
Sweetieface
2013
Kathy
2011
Pretty Girls
2008