Filmography
Mark O'Brien films and TV shows
12 films, 4 TV shows, 2014–2025
The best Mark O'Brien films
By MovieNCo readers' ratings.
- Arrival 2016
- Marriage Story 2019
- Ready or Not 2019
- The Front Runner 2018
- The Darkest Minds 2018
- Bad Times at the El Royale 2018
As an actor
16- 2025
Nuremberg
Colonel John Amen
- 2020–2023
Perry Mason TV
Thomas Milligan, 7 episodes
- 2020–2023
Your Honor TV
Padre Jay, 3 episodes
- 2021
- 2019
- 2019
- 2019–2022
City on a Hill TV
Jimmy Ryan, 14 episodes
- 2018
- 2018
- 2018
- 2018
- 2018
Anon
Cyrus Frear
- 2015
Len and Company
Zach
- 2016
- 2015
- 2014–2017
Halt and Catch Fire TV
Tom Rendon, 15 episodes
















