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Mark O'Brien

Mark O'Brien

Acting 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

Arrival
MOV ⭐ 7.6
Arrival 2016
Nuremberg
MOV ⭐ 7.6
Nuremberg 2025
The Darkest Minds
MOV ⭐ 7.0
The Darkest Minds 2018
Bad Times at the El Royale
MOV ⭐ 6.8
Bad Times at the El Royale 2018
Anon
MOV ⭐ 6.0
Anon 2018
Kin
MOV ⭐ 6.1
Kin 2018
The Voices of Our Mother
MOV ⭐ 5.9
The Voices of Our Mother 2026
Seven Veils
MOV ⭐ 5.6
Seven Veils 2025
Shadow of God
MOV ⭐ 5.7
Shadow of God 2025
Parallel
MOV ⭐ 6.0
Parallel 2018
How to Plan an Orgy in a Small Town
MOV ⭐ 5.1
How to Plan an Orgy in a Small Town 2015
State Like Sleep
MOV ⭐ 4.7
State Like Sleep 2019
The Four Horsemen
MOV ⭐ 3.8
The Four Horsemen 2008
Beat Down
MOV
Beat Down 2012
The Dark Stranger
MOV ⭐ 4.9
The Dark Stranger 2016
End of Days, Inc.
MOV ⭐ 5.7
End of Days, Inc. 2015
Grown Up Movie Star
MOV ⭐ 5.1
Grown Up Movie Star 2010
Heartless Disappearance Into Labrador Seas
MOV
Heartless Disappearance Into Labrador Seas 2008
Snarbuckled
MOV
Snarbuckled 2010