Mark O'Brien
Acting
Born 1984-05-07 · St. Johns, Newfoundland, Canada
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
8.3
Hannibal
2013 · TV
8.1
Your Honor
2020 · TV
7.9
Halt and Catch Fire
2014 · TV
7.7
Warehouse 13
2009 · TV
7.2
City on a Hill
2019 · TV
7.2
Perry Mason
2020 · TV
7.2
The Sticky
2024 · TV
7.0
Republic of Doyle
2010 · TV
7.0
The Last Tycoon
2017 · TV
6.6
61st Street
2022 · TV
6.8
Killjoys
2015 · TV
6.5
The Copenhagen Test
2025 · TV
6.3
The Kelly Clarkson Show
2019 · TV