Mark O'Brien

Mark O'Brien

Personal Info

Known For

Acting

Gender

Male

Birthday

07/05/1984

Age

42 years old

Place of Birth

St. Johns, Newfoundland, Canada

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).

Filmography

Cast

2025

Nuremberg

as Colonel John Amen

2025

Falsehood

as Elizeus Carrier

2025

Shadow of God

as Mason Harper

2025

Seven Veils

as Paul

2025

Topper

as Topper

2021

Blue Bayou

as Ace

2021

The Righteous

as Aaron Smith

2019

Hammer

as Chris Davis

2019

Marriage Story

as Carter Mitchum

2019

Ready or Not

as Alex Le Domas

2019

Goalie

as Terry Sawchuk

2019

State Like Sleep

as Darren

2018

The Front Runner

as Billy Shore

2018

Bad Times at the El Royale

as Larsen Rogers

2018

Kin

as Jake

2018

The Darkest Minds

as Rob Meadows

2018

How It Ends

as Jeremiah

2018

Anon

as Cyrus Frear

2018

Parallel

as Josh

2016

Arrival

as Captain Marks

2016

Wanderer

as Eric

2015

End of Days, Inc.

as Jason

2015

Dennis

as Dennis

2013

Sweetieface

as Sam

2012

Beat Down

as Michael

2010

Snarbuckled

as Jacob O'Higgins

2010

Brad

as Brad

2009

Mum's the Word

as Curtis

2009

Quiet at Dawn

as Watts

2009

Cut from the Same Cloth

as Jack Cochrane

2008

The One That Got Away

as Tommy Palchek

2008

The Four Horsemen

as Eric Rollins

2008

Epilogue

as Henry

Crew

2021

The Righteous

as Writer

2021

The Righteous

as Director

2021

The Righteous

as Executive Producer

2016

Wanderer

as Director

2019

Goalie

as Executive Producer

2016

Wanderer

as Producer

2015

Dennis

as Producer

2013

Sweetieface

as Editor

2011

Kathy

as Director

2010

Brad

as Producer

2010

Brad

as Editor

2013

Sweetieface

as Director

2013

Sweetieface

as Producer

2008

Pretty Girls

as Director

2008

Pretty Girls

as Writer

2008

Pretty Girls

as Editor

2008

Pretty Girls

as Cinematography