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Mark O'Brien

Person

Mark O'Brien

Acting

Born
May 7, 1984 · St. Johns, Newfoundland, Canada

Biography

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
The Kelly Clarkson Show

2019Series

The Kelly Clarkson Show

2019Series

Hannibal
Hannibal

2013Series

Hannibal

2013Series

Warehouse 13
Warehouse 13

2009Series

Warehouse 13

2009Series

Arrival
Arrival

2016Movie

Arrival

2016Movie

Republic of Doyle
Republic of Doyle

2010Series

Republic of Doyle

2010Series

Halt and Catch Fire
Halt and Catch Fire

2014Series

Halt and Catch Fire

2014Series

Killjoys
Killjoys

2015Series

Killjoys

2015Series

Perry Mason
Perry Mason

2020Series

Perry Mason

2020Series

Your Honor
Your Honor

2020Series

Your Honor

2020Series

Ready or Not
Ready or Not

2019Movie

Ready or Not

2019Movie

City on a Hill
City on a Hill

2019Series

City on a Hill

2019Series

Nuremberg
Nuremberg

2025Movie

Nuremberg

2025Movie

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