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
- Acting
- Born
- 1984-05-07 · St. Johns, Newfoundland, Canada
Known for
- Arrival (2016) — Captain Marks
- Marriage Story (2019) — Carter Mitchum
- Ready or Not (2019) — Alex
- Bad Times at the El Royale (2018) — Larsen Rogers
- Hannibal (2013) — Randall Tier
- The Darkest Minds (2018) — Rob Meadows
- How It Ends (2018) — Jeremiah
- Anon (2018) — Cyrus Frear
- Your Honor (2020) — Father Jay
- Nuremberg (2025) — Colonel John Amen
- Kin (2018) — Jake
- Warehouse 13 (2009) — Jerry Hoffler
- Halt and Catch Fire (2014) — Tom Rendon
- Killjoys (2015) — Grayson Hicks
- Perry Mason (2020) — Thomas Milligan
- The Front Runner (2018) — Billy Shore