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).

Filmography of Mark O'Brien

• The Voices of Our Mother (2026)
• The Outer Threat (2026)
• Seven Veils (2025)
• Shadow of God (2025)
• Nuremberg (2025)
• The Memory Keeper (2025)
• Topper (2025)
• The Copenhagen Test (2025)
• The Sticky (2024)
• 61st Street (2022)
• Blue Bayou (2021)
• The Righteous (2021)
• Perry Mason (2020)
• Your Honor (2020)
• State Like Sleep (2019)
• Marriage Story (2019)
• Goalie (2019)
• Hammer (2019)
• Ready or Not (2019)
• The Kelly Clarkson Show (2019)
• City on a Hill (2019)
• Anon (2018)
• Kin (2018)
• Parallel (2018)
• The Darkest Minds (2018)
• Bad Times at the El Royale (2018)
• The Front Runner (2018)
• How It Ends (2018)
• The Last Tycoon (2017)
• The Dark Stranger (2016)
• Arrival (2016)
• Wanderer (2016)
• End of Days, Inc. (2015)
• How to Plan an Orgy in a Small Town (2015)
• Dennis (2015)
• Killjoys (2015)
• Halt and Catch Fire (2014)
• Hannibal (2013)
• Beat Down (2012)
• Grown Up Movie Star (2010)