Mark O'Brien - Cast

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Overview Cast Crew
Mark O'Brien

Mark O'Brien

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).

Casted
  • Arrival

    Arrival

    Played Captain Marks

    Average Rating
    7.6
    18721 votes
    Release Date
    Nov 10, 2016
    9 years ago
  • Marriage Story

    Marriage Story

    Played Carter Mitchum

    Average Rating
    7.7
    7212 votes
    Release Date
    Sep 28, 2019
    6 years ago
  • Ready or Not

    Ready or Not

    Played Alex Le Domas

    Average Rating
    7.0
    4954 votes
    Release Date
    Aug 21, 2019
    6 years ago
  • Bad Times at the El Royale

    Bad Times at the El Royale

    Played Larsen Rogers

    Average Rating
    6.8
    3739 votes
    Release Date
    Oct 04, 2018
    7 years ago
  • The Darkest Minds

    The Darkest Minds

    Played Rob Meadows

    Average Rating
    7.0
    2889 votes
    Release Date
    Jul 25, 2018
    7 years ago
  • How It Ends

    How It Ends

    Played Jeremiah

    Average Rating
    5.3
    1982 votes
    Release Date
    Jul 13, 2018
    7 years ago
  • Anon

    Anon

    Played Cyrus Frear

    Average Rating
    6.0
    1676 votes
    Release Date
    May 03, 2018
    8 years ago
  • Kin

    Kin

    Played Jake

    Average Rating
    6.1
    864 votes
    Release Date
    Aug 29, 2018
    7 years ago
  • The Front Runner

    The Front Runner

    Played Billy Shore

    Average Rating
    5.9
    370 votes
    Release Date
    Nov 06, 2018
    7 years ago
  • Blue Bayou

    Blue Bayou

    Played Ace

    Average Rating
    7.5
    285 votes
    Release Date
    Sep 10, 2021
    4 years ago
  • Parallel

    Parallel

    Played Josh

    Average Rating
    6.0
    165 votes
    Release Date
    Apr 10, 2018
    8 years ago
  • How to Plan an Orgy in a Small Town

    How to Plan an Orgy in a Small Town

    Played Bruce Buck

    Average Rating
    5.1
    138 votes
    Release Date
    Sep 19, 2015
    10 years ago
  • Shadow of God

    Shadow of God

    Played Mason Harper

    Average Rating
    5.6
    41 votes
    Release Date
    Mar 26, 2025
    1 year ago
  • Seven Veils

    Seven Veils

    Played Paul

    Average Rating
    5.7
    38 votes
    Release Date
    Mar 07, 2025
    1 year ago
  • State Like Sleep

    State Like Sleep

    Played Darren

    Average Rating
    4.7
    36 votes
    Release Date
    Jan 04, 2019
    7 years ago
  • The Dark Stranger

    The Dark Stranger

    Played Mark

    Average Rating
    4.9
    34 votes
    Release Date
    Jul 15, 2016
    9 years ago
  • Hammer

    Hammer

    Played Chris Davis

    Average Rating
    5.4
    28 votes
    Release Date
    Dec 05, 2019
    6 years ago
  • The Righteous

    The Righteous

    Played Aaron Smith

    Average Rating
    6.2
    21 votes
    Release Date
    Aug 15, 2021
    4 years ago
  • Nuremberg

    Nuremberg

    Played Colonel John Amen

    Average Rating
    7.4
    18 votes
    Release Date
    Nov 06, 2025
    5 months ago
  • End of Days, Inc.

    End of Days, Inc.

    Played Jason

    Average Rating
    5.6
    17 votes
    Release Date
    Apr 24, 2015
    11 years ago
  • Grown Up Movie Star

    Grown Up Movie Star

    Played Will

    Average Rating
    5.1
    16 votes
    Release Date
    Oct 20, 2009
    16 years ago
  • The Four Horsemen

    The Four Horsemen

    Played Eric Rollins

    Average Rating
    3.8
    14 votes
    Release Date
    Mar 18, 2008
    18 years ago
  • Goalie

    Goalie

    Played Terry Sawchuk

    Average Rating
    7.0
    6 votes
    Release Date
    Mar 01, 2019
    7 years ago
  • Topper

    Topper

    Played Topper

    Average Rating
    5.3
    3 votes
    Release Date
    Mar 04, 2025
    1 year ago
  • The One That Got Away

    The One That Got Away

    Played Tommy Palchek

    Average Rating
    4.3
    3 votes
    Release Date
    Apr 20, 2008
    18 years ago

  • Cut from the Same Cloth

    Played Jack Cochrane

    Average Rating
    0.0
    0 votes
    Release Date
    Jan 01, 2009
    17 years ago
  • Heartless Disappearance Into Labrador Seas

    Heartless Disappearance Into Labrador Seas

    Played Charlie

    Average Rating
    0.0
    0 votes
    Release Date
    Sep 09, 2008
    17 years ago
  • Snarbuckled

    Snarbuckled

    Played Jacob O'Higgins

    Average Rating
    0.0
    0 votes
    Release Date
    Sep 18, 2010
    15 years ago

  • The Voices of Our Mother

    Played William

    Average Rating
    0.0
    0 votes
  • Beat Down

    Beat Down

    Played Michael

    Average Rating
    0.0
    0 votes
    Release Date
    Aug 03, 2012
    13 years ago

  • Mum's the Word

    Played Curtis

    Average Rating
    0.0
    0 votes
    Release Date
    Oct 23, 2009
    16 years ago

  • Epilogue

    Played Henry

    Average Rating
    0.0
    0 votes
    Release Date
    Jun 27, 2008
    18 years ago

  • Brad

    Played Brad

    Average Rating
    0.0
    0 votes
    Release Date
    Jul 24, 2010
    15 years ago

  • The Outer Threat

    Average Rating
    0.0
    0 votes
  • Dennis

    Dennis

    Played Dennis

    Average Rating
    0.0
    0 votes
    Release Date
    Apr 18, 2015
    11 years ago
  • Falsehood

    Falsehood

    Played Elizeus Carrier

    Average Rating
    0.0
    0 votes
    Release Date
    Oct 26, 2025
    5 months ago

  • Quiet at Dawn

    Played Watts

    Average Rating
    0.0
    0 votes
    Release Date
    Sep 01, 2009
    16 years ago

  • Better People

    Played John

    Average Rating
    0.0
    0 votes

  • Sweetieface

    Played Sam

    Average Rating
    0.0
    0 votes
    Release Date
    Jan 01, 2013
    13 years ago
  • Wanderer

    Wanderer

    Played Eric

    Average Rating
    0.0
    0 votes
    Release Date
    Oct 04, 2016
    9 years ago

  • Nice People

    Average Rating
    0.0
    0 votes
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