Mark O'Brien
Born in St. Johns, Newfoundland, Canada
- Born:
- May 7, 1984 (age 41)
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).
View on IMDbCast Credits
Nuremberg
2025
As Colonel John Amen
Blue Bayou
2021
As Ace
Marriage Story
2019
As Carter Mitchum
Ready or Not
2019
As Alex Le Domas
The Front Runner
2018
As Billy Shore
Bad Times at the El Royale
2018
As Larsen Rogers
Kin
2018
As Jake
The Darkest Minds
2018
As Rob Meadows
How It Ends
2018
As Jeremiah
Anon
2018
As Cyrus Frear
Parallel
2018
As Josh
Arrival
2016
As Captain Marks
How to Plan an Orgy in a Small Town
2015
As Bruce Buck