Mark O'Brien
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
- The Kelly Clarkson Show (2019)
- Warehouse 13 (2009)
- Hannibal (2013)
- Perry Mason (2020)
- Arrival (2016)
- Halt and Catch Fire (2014)
- Republic of Doyle (2010)
- Killjoys (2015)
- Ready or Not (2019)
- Your Honor (2020)
- City on a Hill (2019)
- Nuremberg (2025)
- 61st Street (2022)
- The Copenhagen Test (2025)
- Marriage Story (2019)
- The Darkest Minds (2018)
- Bad Times at the El Royale (2018)
- The Last Tycoon (2017)
- The Sticky (2024)
- How It Ends (2018)