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Mark O'Brien
Acting

Mark O'Brien

Known for exceptional acting in global cinema.

Profession

Acting

Birthday

7 May 1984

Age

42 Years

Born In

St. Johns, Newfoundland, Canada

Total Projects

54

Years Active

17 Yrs

Avg Rating

6.4 ★

Overview

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).

Filmography

The Copenhagen Test

tv

The Copenhagen Test

2025

The Copenhagen Test

as Edmund Cobb

Nuremberg

movie

Nuremberg

2025

Nuremberg

as Colonel John Amen

The Memory Keeper

movie

The Memory Keeper

2025

The Memory Keeper

as Elizeus Carrier

Shadow of God

movie

Shadow of God

2025

Shadow of God

as Mason Harper

Seven Veils

movie

Seven Veils

2025

Seven Veils

as Paul

Topper

movie

Topper

2025

Topper

as Topper

The Sticky

tv

The Sticky

2024

The Sticky

as Charlie

61st Street

tv

61st Street

2022

61st Street

as Officer Logan

Blue Bayou

movie

Blue Bayou

2021

Blue Bayou

as Ace

The Righteous

movie

The Righteous

2021

The Righteous

as Aaron Smith

Your Honor

tv

Your Honor

2020

Your Honor

as Father Jay

Perry Mason

tv

Perry Mason

2020

Perry Mason

as Thomas Milligan

Hammer

movie

Hammer

2019

Hammer

as Chris Davis

Marriage Story

movie

Marriage Story

2019

Marriage Story

as Carter Mitchum

The Kelly Clarkson Show

tv

The Kelly Clarkson Show

2019

The Kelly Clarkson Show

as Self

Ready or Not

movie

Ready or Not

2019

Ready or Not

as Alex Le Domas

City on a Hill

tv

City on a Hill

2019

City on a Hill

as Jimmy Ryan

Goalie

movie

Goalie

2019

Goalie

as Terry Sawchuk

State Like Sleep

movie

State Like Sleep

2019

State Like Sleep

as Darren

The Front Runner

movie

The Front Runner

2018

The Front Runner

as Billy Shore

Bad Times at the El Royale

movie

Bad Times at the El Royale

2018

Bad Times at the El Royale

as Larsen Rogers

Kin

movie

Kin

2018

Kin

as Jake

The Darkest Minds

movie

The Darkest Minds

2018

The Darkest Minds

as Rob Meadows

How It Ends

movie

How It Ends

2018

How It Ends

as Jeremiah

Anon

movie

Anon

2018

Anon

as Cyrus Frear

Parallel

movie

Parallel

2018

Parallel

as Josh

The Last Tycoon

tv

The Last Tycoon

2017

The Last Tycoon

as Max Miner

Arrival

movie

Arrival

2016

Arrival

as Captain Marks

Wanderer

movie

Wanderer

2016

Wanderer

as Eric

The Dark Stranger

movie

The Dark Stranger

2016

The Dark Stranger

as Mark

How to Plan an Orgy in a Small Town

movie

How to Plan an Orgy in a Small Town

2015

How to Plan an Orgy in a Small Town

as Bruce Buck

Killjoys

tv

Killjoys

2015

Killjoys

as Grayson Hicks

End of Days, Inc.

movie

End of Days, Inc.

2015

End of Days, Inc.

as Jason

Dennis

movie

Dennis

2015

Dennis

as Dennis

Halt and Catch Fire

tv

Halt and Catch Fire

2014

Halt and Catch Fire

as Tom Rendon

Hannibal

tv

Hannibal

2013

Hannibal

as Randall Tier

CineRaya

movie

Sweetieface

2013

Sweetieface

as Sam

Beat Down

movie

Beat Down

2012

Beat Down

as Michael

Snarbuckled

movie

Snarbuckled

2010

Snarbuckled

as Jacob O'Higgins

CineRaya

movie

Brad

2010

Brad

as Brad

Grown Up Movie Star

movie

Grown Up Movie Star

2010

Grown Up Movie Star

as Will

Republic of Doyle

tv

Republic of Doyle

2010

Republic of Doyle

as Des Courtney

CineRaya

movie

Mum's the Word

2009

Mum's the Word

as Curtis

CineRaya

movie

Quiet at Dawn

2009

Quiet at Dawn

as Watts

Warehouse 13

tv

Warehouse 13

2009

Warehouse 13

as Jerry Hoffler

CineRaya

movie

Cut from the Same Cloth

2009

Cut from the Same Cloth

as Jack Cochrane

Heartless Disappearance Into Labrador Seas

movie

Heartless Disappearance Into Labrador Seas

2008

Heartless Disappearance Into Labrador Seas

as Charlie

CineRaya

movie

Epilogue

2008

Epilogue

as Henry

The One That Got Away

movie

The One That Got Away

2008

The One That Got Away

as Tommy Palchek

The Four Horsemen

movie

The Four Horsemen

2008

The Four Horsemen

as Eric Rollins

CineRaya

movie

The Voices of Our Mother

TBA

The Voices of Our Mother

as William

CineRaya

movie

The Outer Threat

TBA

The Outer Threat

CineRaya

movie

Better People

TBA

Better People

as John

CineRaya

movie

Nice People

TBA

Nice People

Mark O'Brien – Biography, Movies & Updates | CineRaya