Mark O'Brien

Mark O'Brien

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
Acting
Gender
Male
Birthday
7 May 1984
Place of Birth
St. Johns, Newfoundland, Canada
Also Known As
Mark O’Brien

MEDIA

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FILMOGRAPHY

Seven Veils

Seven Veils

2025-03-07Actor
The Four Horsemen

The Four Horsemen

2008-03-18Actor
Grown Up Movie Star

Grown Up Movie Star

2009-10-20Actor
Cut from the Same Cloth

Cut from the Same Cloth

2009-01-01Actor
Heartless Disappearance Into Labrador Seas

Heartless Disappearance Into Labrador Seas

2008-09-09Actor
Shadow of God

Shadow of God

2025-03-26Actor
Snarbuckled

Snarbuckled

2010-09-18Actor
The Dark Stranger

The Dark Stranger

2016-07-15Actor
Nuremberg

Nuremberg

2025-11-06Actor
End of Days, Inc.

End of Days, Inc.

2015-04-24Actor
The Voices of Our Mother

The Voices of Our Mother

Actor, Director, Writer
Beat Down

Beat Down

2012-08-03Actor
Arrival

Arrival

2016-11-10Actor
Anon

Anon

2018-05-03Actor
State Like Sleep

State Like Sleep

2019-01-04Actor
Kin

Kin

2018-08-29Actor
Parallel

Parallel

2018-04-10Actor
The Darkest Minds

The Darkest Minds

2018-07-25Actor
How to Plan an Orgy in a Small Town

How to Plan an Orgy in a Small Town

2015-09-19Actor
Bad Times at the El Royale

Bad Times at the El Royale

2018-10-04Actor
Marriage Story

Marriage Story

2019-09-28Actor
The Front Runner

The Front Runner

2018-11-06Actor
How It Ends

How It Ends

2018-07-13Actor
Goalie

Goalie

2019-03-01Actor, Executive Producer
Hammer

Hammer

2019-12-05Actor
Ready or Not

Ready or Not

2019-08-21Actor
Blue Bayou

Blue Bayou

2021-09-10Actor
The Righteous

The Righteous

2021-08-15Actor, Executive Producer, Director, Writer
Mum's the Word

Mum's the Word

2009-10-23Actor
Epilogue

Epilogue

2008-06-27Actor
Brad

Brad

2010-07-24Actor, Producer, Editor
The Outer Threat

The Outer Threat

Dennis

Dennis

2015-04-18Actor, Producer
Falsehood

Falsehood

2025-10-26Actor
Quiet at Dawn

Quiet at Dawn

2009-09-01Actor
Topper

Topper

2025-03-04Actor
The One That Got Away

The One That Got Away

2008-04-20Actor
Better People

Better People

Actor, Director, Writer, Editor
Sweetieface

Sweetieface

2013-01-01Actor, Director, Producer, Editor
Wanderer

Wanderer

2016-10-04Actor, Director, Producer
Nice People

Nice People

Director
Perry Mason

Perry Mason

2020-06-21Actor
Republic of Doyle

Republic of Doyle

2010-01-06Actor
The Last Tycoon

The Last Tycoon

2017-07-28Actor
61st Street

61st Street

2022-04-10Actor
Killjoys

Killjoys

2015-06-19Actor
The Kelly Clarkson Show

The Kelly Clarkson Show

2019-09-09Actor
City on a Hill

City on a Hill

2019-06-16Actor
Hannibal

Hannibal

2013-04-04Actor
Warehouse 13

Warehouse 13

2009-07-07Actor
Halt and Catch Fire

Halt and Catch Fire

2014-06-01Actor
Your Honor

Your Honor

2020-12-06Actor
The Copenhagen Test

The Copenhagen Test

2025-12-27Actor
The Sticky

The Sticky

2024-12-06Actor
Kathy

Kathy

2011-09-17Director
Pretty Girls

Pretty Girls

2008-06-25Director, Writer, Editor, Cinematography
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