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