Mark O'Brien
Filmography

Mark O'Brien

ActorBorn May 7, 1984 St. Johns, Newfoundland, Canada48 titles

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).

Movies & shows — tap any title to see where it streams

The Kelly Clarkson Show
The Kelly Clarkson Show
2019 · 6.3
Self
Hannibal
Hannibal
2013 · 8.3
Randall Tier
Warehouse 13
Warehouse 13
2009 · 7.7
Jerry Hoffler
Ready or Not
Ready or Not
2019 · 7.1
Alex
Arrival
Arrival
2016 · 7.6
Captain Marks
Perry Mason
Perry Mason
2020 · 7.2
Thomas Milligan
Halt and Catch Fire
Halt and Catch Fire
2014 · 7.9
Tom Rendon
Nuremberg
Nuremberg
2025 · 7.6
Colonel John Amen
Your Honor
Your Honor
2020 · 8.1
Father Jay
The Copenhagen Test
The Copenhagen Test
2025 · 6.5
Edmund Cobb