Person

Mark O'Brien

Acting Born 7 May 1984 — 42.22885891917 years old 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).

Latest credit The Voices of Our Mother (2026)

As actor

46 titles

MOVIE Watched In progress

The Outer Threat

2026 · 94 min

MOVIE Watched In progress

The Voices of Our Mother

2026 · 93 min

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Nuremberg

2025 · 149 min

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The Memory Keeper

2025 · 110 min

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Shadow of God

2025 · 87 min

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Seven Veils

2025 · 107 min

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Topper

2025 · 107 min

MOVIE Watched In progress

Blue Bayou

2021 · 117 min

MOVIE Watched In progress

The Righteous

2021 · 97 min

MOVIE Watched In progress

Hammer

2019 · 82 min

MOVIE Watched In progress

Marriage Story

2019 · 137 min

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Ready or Not

2019 · 96 min

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Goalie

2019 · 119 min

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State Like Sleep

2019 · 105 min

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The Front Runner

2018 · 113 min

MOVIE Watched In progress

Bad Times at the El Royale

2018 · 141 min

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Kin

2018 · 102 min

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The Darkest Minds

2018 · 105 min

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How It Ends

2018 · 113 min

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Anon

2018 · 100 min

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Parallel

2018 · 104 min

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Arrival

2016 · 116 min

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Wanderer

2016 · 17 min

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The Dark Stranger

2016 · 90 min

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How to Plan an Orgy in a Small Town

2015 · 102 min

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End of Days, Inc.

2015 · 82 min

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Dennis

2015 · 15 min

Sweetieface MOVIE Watched In progress

Sweetieface

2013 · 14 min

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Beat Down

2012 · 89 min

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Snarbuckled

2010 · 17 min

Brad MOVIE Watched In progress

Brad

2010 · 16 min

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Grown Up Movie Star

2010 · 95 min

Mum's the Word MOVIE Watched In progress

Mum's the Word

2009 · 15 min

Quiet at Dawn MOVIE Watched In progress

Quiet at Dawn

2009 · 11 min

Cut from the Same Cloth MOVIE Watched In progress

Cut from the Same Cloth

2009 · 22 min

MOVIE Watched In progress

Heartless Disappearance Into Labrador Seas

2008 · 26 min

Epilogue MOVIE Watched In progress

Epilogue

2008 · 10 min

MOVIE Watched In progress

The One That Got Away

2008 · 87 min

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The Four Horsemen

2008 · 118 min

SERIES Watched In progress

The Copenhagen Test

2025

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The Last Tycoon

2017 · 60 min

SERIES Watched In progress

Republic of Doyle

2010 · 44 min

Nice People MOVIE Watched In progress

Nice People

Unknown

Better People MOVIE Watched In progress

Better People

Unknown · 11 min

Good in the Room MOVIE Watched In progress

Good in the Room

Unknown

MOVIE Watched In progress

Little One

Unknown