Mark O'Brien

Known for ActingBorn 1984-05-07 (age 42) 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).Read more

Movies & web series

★ 8.3

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Hannibal

2013 · Series

★ 8.1

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Your Honor

2020 · Series

★ 7.9

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Halt and Catch Fire

2014 · Series

★ 7.7

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Marriage Story

2019 · Movie

★ 7.7

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Warehouse 13

2009 · Series

★ 7.6

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Arrival

2016 · Movie

★ 7.5

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Nuremberg

2025 · Movie

★ 7.4

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Blue Bayou

2021 · Movie

★ 7.3

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City on a Hill

2019 · Series

★ 7.2

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The Sticky

2024 · Series

★ 7.2

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Perry Mason

2020 · Series

★ 7.1

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Ready or Not

2019 · Movie

★ 7.0

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The Darkest Minds

2018 · Movie

★ 7.0

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Goalie

2019 · Movie

★ 7.0

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The Last Tycoon

2017 · Series

★ 6.9

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61st Street

2022 · Series

★ 7.0

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Republic of Doyle

2010 · Series

★ 6.8

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Bad Times at the El Royale

2018 · Movie

★ 6.9

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Killjoys

2015 · Series

★ 6.4

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The Copenhagen Test

2025 · Series

★ 6.4

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The Kelly Clarkson Show

2019 · Series

★ 6.2

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The Righteous

2021 · Movie

★ 6.1

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Kin

2018 · Movie

★ 6.0

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Anon

2018 · Movie

★ 6.0

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Parallel

2018 · Movie

★ 5.9

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The Front Runner

2018 · Movie

★ 5.7

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Shadow of God

2025 · Movie

★ 5.6

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Seven Veils

2025 · Movie

★ 5.7

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End of Days, Inc.

2015 · Movie

★ 5.4

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Hammer

2019 · Movie

★ 5.3

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Topper

2025 · Movie

★ 5.3

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How It Ends

2018 · Movie

★ 5.1

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How to Plan an Orgy in a Small Town

2015 · Movie

★ 5.1

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Grown Up Movie Star

2010 · Movie

★ 4.9

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The Dark Stranger

2016 · Movie

★ 4.7

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State Like Sleep

2019 · Movie

★ 4.3

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The One That Got Away

2008 · Movie

★ 3.8

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The Four Horsemen

2008 · Movie

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The Voices of Our Mother

2026 · Movie

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The Memory Keeper

2025 · Movie

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Wanderer

2016 · Movie

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Dennis

2015 · Movie

Sweetieface

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Sweetieface

2013 · Movie

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Beat Down

2012 · Movie

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Kathy

2011 · Movie

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Snarbuckled

2010 · Movie

Brad

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Brad

2010 · Movie

Cut from the Same Cloth

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Cut from the Same Cloth

2009 · Movie