Mark O'Brien
Actor
- Born
- May 7, 1984 (age 42) · St. Johns, Newfoundland, Canada
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).
Known for
Arrival
November 10, 2016
Marriage Story
September 28, 2019
Ready or Not
August 21, 2019
Bad Times at the El Royale
October 4, 2018
The Darkest Minds
July 25, 2018
How It Ends
July 13, 2018
Anon
May 3, 2018
Nuremberg
November 6, 2025
Kin
August 29, 2018
The Front Runner
November 6, 2018
Blue Bayou
September 10, 2021
Parallel
April 10, 2018
Acting44
- 2026The Outer Threat as Daniel Ashford
- 2026The Voices of Our Mother as William
- 2025Nuremberg as Colonel John Amen
- 2025The Memory Keeper as Elizeus Carrier
- 2025Shadow of God as Mason Harper
- 2025Seven Veils as Paul
- 2025Topper as Topper
- 2021Blue Bayou as Ace
- 2021The Righteous as Aaron Smith
- 2019Hammer as Chris Davis