Mark O'Brien
Acting

Mark O'Brien

Born 1984-05-07 · St. John's, Canada

Mark O'Brien (born May 7, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle and Tom Rendon in Halt and Catch Fire.

Known for

Arrival★ 7.6
Arrival
2016
Ready or Not★ 7.1
Ready or Not
2019
The Darkest Minds★ 7
The Darkest Minds
2018
Bad Times at the El Royale★ 6.8
Bad Times at the El Royale
2018
Anon★ 5.9
Anon
2018
Marriage Story★ 7.8
Marriage Story
2019
How to Plan an Orgy in a Small Town★ 5.1
How to Plan an Orgy in a Small Town
2015
How It Ends★ 5.3
How It Ends
2018
Kin★ 6.2
Kin
2018
Parallel★ 6
Parallel
2018
Blue Bayou★ 7.5
Blue Bayou
2021
The Front Runner★ 5.9
The Front Runner
2018
End of Days, Inc.★ 5.6
End of Days, Inc.
2015
The Four Horsemen★ 4.5
The Four Horsemen
2008
State Like Sleep★ 5
State Like Sleep
2019
The Righteous★ 6.2
The Righteous
2021
Hammer★ 5.4
Hammer
2019
The Dark Stranger★ 5.4
The Dark Stranger
2016
Grown Up Movie Star★ 5.4
Grown Up Movie Star
2009
Goalie★ 7
Goalie
2019
Beat Down
Beat Down
2012
Snarbuckled
Snarbuckled
2010