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IMDbPro

Mark O'Brien(IX)

  • Actor
  • Director
  • Writer
IMDbProStarmeterTop 5,0006358
Mark O'Brien
While performing an unauthorized exorcism on his father, an elite exorcist suspects the entity he's doing battle with might be a holy being, perhaps even God.
Play trailer1:49
Shadow of God (2025)
30 Videos
38 Photos
Mark O'Brien is an award-winning actor and filmmaker. He is an English major with a Bachelor of Arts from Memorial University of Newfoundland. His mother was a nurse and his father a truck driver. Mark also has three older sisters. He married actress Georgina Reilly on January 6, 2013 after meeting on the set of the hit show Republic of Doyle.
BornMay 7
  • More at IMDbPro
    • Contact info
    • Agent info
    • Resume
BornMay 7
IMDbProStarmeterTop 5,0006358
  • View contact info at IMDbPro
    • Awards
      • 13 wins & 16 nominations total

    Photos38

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    + 32
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    Known for

    Andie MacDowell, Adam Brody, Nicky Guadagni, John Ralston, Elyse Levesque, Melanie Scrofano, Mark O'Brien, Kristian Bruun, Samara Weaving, Daniela Barbosa, Celine Tsai, and Hanneke Talbot in Ready or Not (2019)
    Ready or Not
    6.8
    • Alex
    • 2019
    Forest Whitaker, Amy Adams, and Jeremy Renner in Arrival (2016)
    Arrival
    7.9
    • Captain Marks
    • 2016
    Kevin Bacon and Aldis Hodge in City on a Hill (2019)
    City on a Hill
    7.6
    TV Series
    • Jimmy Ryan
    Halt and Catch Fire (2014)
    Halt and Catch Fire
    8.4
    TV Series
    • Tom Rendon

    Credits

    Edit
    IMDbPro

    Actor

    • The Copenhagen Test
      • Cobb
      • Post-production
      • TV Series
    • The Embers and the Stars
      • Daniel
      • Post-production
    • The Voices of Our Mother
      • William
      • Post-production
    • Nuremberg
      • Colonel John Amen
      • Completed
    • Falsehood
      • Elizeus Carrier
      • Completed
    • Shadow of God (2025)
      Shadow of God
      4.0
      • Mason Harper
      • 2025
    • Topper (2025)
      Topper
      8.2
      • Topper
      • 2025
    • Margo Martindale in The Sticky (2024)
      The Sticky
      7.0
      TV Series
      • Charlie
      • 2024
    • Amanda Seyfried in Seven Veils (2023)
      Seven Veils
      5.8
      • Paul
      • 2023
    • Courtney B. Vance in 61st Street (2022)
      61st Street
      6.8
      TV Series
      • Johnny Logan
      • Logan
      • 2022–2023
    • Matthew Rhys in Perry Mason (2020)
      Perry Mason
      7.6
      TV Series
      • Thomas Milligan
      • 2023
    • Bryan Cranston in Your Honor (2020)
      Your Honor
      7.6
      TV Series
      • Father Jay
      • 2023
    • Henry Czerny, Mimi Kuzyk, and Mark O'Brien in The Righteous (2021)
      The Righteous
      5.9
      • Aaron Smith
      • 2021
    • Justin Chon and Alicia Vikander in Blue Bayou (2021)
      Blue Bayou
      7.1
      • Ace
      • 2021
    • Kevin Bacon and Aldis Hodge in City on a Hill (2019)
      City on a Hill
      7.6
      TV Series
      • Jimmy Ryan
      • 2019–2021
    • Will Patton and Mark O'Brien in Hammer (2019)
      Hammer
      5.8
      • Chris Davis
      • 2019
    • Scarlett Johansson, Adam Driver, and Azhy Robertson in Marriage Story (2019)
      Marriage Story
      7.9
      • Carter Mitchum
      • 2019
    • Andie MacDowell, Adam Brody, Nicky Guadagni, John Ralston, Elyse Levesque, Melanie Scrofano, Mark O'Brien, Kristian Bruun, Samara Weaving, Daniela Barbosa, Celine Tsai, and Hanneke Talbot in Ready or Not (2019)
      Ready or Not
      6.8
      • Alex
      • 2019
    • Kevin Pollak, Mark O'Brien, and Georgina Reilly in Goalie (2019)
      Goalie
      6.2
      • Terry Sawchuk
      • 2019
    • Jeff Bridges, Jon Hamm, Dakota Johnson, Chris Hemsworth, Lewis Pullman, Cynthia Erivo, and Cailee Spaeny in Bad Times at the El Royale (2018)
      Bad Times at the El Royale
      7.1
      • Larsen Rogers
      • 2018

    Director

    • The Voices of Our Mother
      • Director
      • Post-production
    • Henry Czerny, Mimi Kuzyk, and Mark O'Brien in The Righteous (2021)
      The Righteous
      5.9
      • Director
      • 2021
    • Threshold (2018)
      Threshold
      Short
      • Director
      • 2018
    • Reel East Coast (2015)
      Reel East Coast
      8.5
      TV Series
      • Director
      • 2015–2016
    • Wanderer (2015)
      Wanderer
      6.9
      Short
      • Director
      • 2015
    • Who Is Hannah? (2015)
      Who Is Hannah?
      Short
      • Director
      • 2015
    • Allan Hawco, Sean McGinley, and Krystin Pellerin in Republic of Doyle (2010)
      Republic of Doyle
      7.6
      TV Series
      • Director
      • 2014
    • Sweetieface (2013)
      Sweetieface
      Short
      • Director (directed by)
      • 2013
    • Better People (2012)
      Better People
      8.6
      Short
      • Director
      • 2012
    • Diary of a Deadly P.I.
      TV Series
      • Director
      • 2012
    • Kathy (2011)
      Kathy
      Short
      • Director (directed by)
      • 2011
    • Pretty Girls
      Short
      • Director
      • 2008
    • Lying Awake
      Short
      • Director
      • 2006
    • Downward Calling
      8.2
      Short
      • Director
      • 2005

    Writer

    • The Voices of Our Mother
      • Writer
      • Post-production
    • Henry Czerny, Mimi Kuzyk, and Mark O'Brien in The Righteous (2021)
      The Righteous
      5.9
      • Writer
      • 2021
    • Threshold (2018)
      Threshold
      Short
      • written by
      • 2018
    • Better People (2012)
      Better People
      8.6
      Short
      • writer
      • 2012
    • Diary of a Deadly P.I.
      TV Series
      • Writer
      • 2012
    • Lying Awake
      Short
      • Writer
      • 2006
    • Downward Calling
      8.2
      Short
      • Writer
      • 2005

    Videos30

    Official Trailer
    Trailer 1:49
    Official Trailer
    Official Trailer
    Trailer 1:54
    Official Trailer
    Official Trailer
    Trailer 1:54
    Official Trailer
    Official Trailer
    Trailer 1:13
    Official Trailer
    Official Trailer
    Trailer 2:32
    Official Trailer
    Season 2 Teaser
    Trailer 0:31
    Season 2 Teaser
    Official Trailer
    Trailer 2:14
    Official Trailer

    Personal details

    Edit
    • Official sites
      • Instagram
      • X
    • Height
      • 6′ 2½″ (1.89 m)
    • Born
      • May 7
      • St. John's, Newfoundland and Labrador, Canada
    • Spouse
      • Georgina ReillyJanuary 6, 2013 - present (1 child)
    • Children
      • Penelope Florence
    • Relatives
      • Sibling(Sibling)
    • Other works
      Host of Kids' CBC in Canada

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