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).

Personal Facts

Known For

Acting

Gender

male

Known Credits

71

Birth Date

1984-05-07 00:00:00

Birth Place

St. Johns, Newfoundland, Canada

Known For

• 

  Ready or Not
• 

  Arrival
• 

  Nuremberg
• 

  The Copenhagen Test
• 

  Shadow of God
• 

  Parallel

Credits

• actors (48 credits)

  • The Outer Threat

    actor

    actors
    2026
  • Nice People

    actor

    actors
    2026
  • The Voices of Our Mother

    William

    actor

    actors
    2026
  • Better People

    John

    actor

    actors
    2026
  • The Copenhagen Test

    Edmund Cobb

    actor

    actors

    - Episode 2 () ... Cobb actor actors

    - Episode 1 (2025) ... Cobb actor actors
    2025
  • Nuremberg

    Colonel John Amen

    actor

    actors
    2025
  • The Memory Keeper

    Elizeus Carrier

    actor

    actors
    2025
  • Shadow of God

    Mason Harper

    actor

    actors
    2025
  • Seven Veils

    Paul

    actor

    actors
    2025
  • Topper

    Topper

    actor

    actors
    2025
  • The Sticky

    - Insertion Point (2024) ... Charlie actor actors
    2024
  • Blue Bayou

    Ace

    actor

    actors
    2021
  • The Righteous

    Aaron Smith

    actor

    actors
    2021
  • Your Honor

    - Part Twenty (2023) ... Father Jay actor actors

    - Part Seventeen (2023) ... Father Jay actor actors

    - Part Sixteen (2023) ... Father Jay actor actors
    2020
  • Hammer

    Chris Davis

    actor

    actors
    2019
  • Marriage Story

    Carter Mitchum

    actor

    actors
    2019
  • Ready or Not

    Alex

    actor

    actors
    2019
  • Goalie

    Terry Sawchuk

    actor

    actors
    2019
  • State Like Sleep

    Darren

    actor

    actors
    2019
  • The Kelly Clarkson Show

    - Idina Menzel, Talia Suskauer & Craig Wich, Mark O'Brien, Barlow & Bear (2022) ... Self actor actors
    2019
  • The Front Runner

    Billy Shore

    actor

    actors
    2018
  • Bad Times at the El Royale

    Larsen Rogers

    actor

    actors
    2018
  • Kin

    Jake

    actor

    actors
    2018
  • The Darkest Minds

    Rob Meadows

    actor

    actors
    2018
  • How It Ends

    Jeremiah

    actor

    actors
    2018
  • Anon

    Cyrus Frear

    actor

    actors
    2018
  • Parallel

    Josh

    actor

    actors
    2018
  • Arrival

    Captain Marks

    actor

    actors
    2016
  • Wanderer

    Eric

    actor

    actors
    2016
  • The Dark Stranger

    Mark

    actor

    actors
    2016
  • How to Plan an Orgy in a Small Town

    Bruce Buck

    actor

    actors
    2015
  • End of Days, Inc.

    Jason

    actor

    actors
    2015
  • Dennis

    Dennis

    actor

    actors
    2015
  • Halt and Catch Fire

    - NeXT (2016) ... Tom Rendon actor actors

    - You Are Not Safe (2016) ... Tom Rendon actor actors

    - The Threshold (2016) ... Tom Rendon actor actors

    - Yerba Buena (2016) ... Tom Rendon actor actors

    - Heaven Is a Place (2015) ... Tom Rendon actor actors
    2014
  • Sweetieface

    Sam

    actor

    actors
    2013
  • Hannibal

    - Naka-Choko (2014) ... Randall Tier actor actors

    - Shiizakana (2014) ... Randall Tier actor actors
    2013
  • Beat Down

    Michael

    actor

    actors
    2012
  • Snarbuckled

    Jacob O'Higgins

    actor

    actors
    2010
  • Brad

    Brad

    actor

    actors
    2010
  • Grown Up Movie Star

    Will

    actor

    actors
    2010
  • Mum's the Word

    Curtis

    actor

    actors
    2009
  • Quiet at Dawn

    Watts

    actor

    actors
    2009
  • Cut from the Same Cloth

    Jack Cochrane

    actor

    actors
    2009
  • Warehouse 13

    - Don't Hate the Player (2011) ... Jerry Hoffler actor actors
    2009
  • Heartless Disappearance Into Labrador Seas

    Charlie

    actor

    actors
    2008
  • Epilogue

    Henry

    actor

    actors
    2008
  • The One That Got Away

    Tommy Palchek

    actor

    actors
    2008
  • The Four Horsemen

    Eric Rollins

    actor

    actors
    2008

• directing (8 credits)

  • Nice People

    director

    directing
    2026
  • The Voices of Our Mother

    director

    directing
    2026
  • Better People

    director

    directing
    2026
  • The Righteous

    director

    directing
    2021
  • Wanderer

    director

    directing
    2016
  • Sweetieface

    director

    directing
    2013
  • Kathy

    director

    directing
    2011
  • Pretty Girls

    director

    directing
    2008

• editing (4 credits)

  • Better People

    editor

    editing
    2026
  • Sweetieface

    editor

    editing
    2013
  • Brad

    editor

    editing
    2010
  • Pretty Girls

    editor

    editing
    2008

• writing (4 credits)

  • The Voices of Our Mother

    writer

    writing
    2026
  • Better People

    writer

    writing
    2026
  • The Righteous

    writer

    writing
    2021
  • Pretty Girls

    writer

    writing
    2008

• production (6 credits)

  • The Righteous

    executive producer

    production
    2021
  • Goalie

    executive producer

    production
    2019
  • Wanderer

    producer

    production
    2016
  • Dennis

    producer

    production
    2015
  • Sweetieface

    producer

    production
    2013
  • Brad

    producer

    production
    2010

• crew (1 credits)

  • Pretty Girls

    cinematography

    crew
    2008