Mark O'Brien (actor)

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Mark O'Brien
Mark O'Brien.jpg
O'Brien in 2013
Born (1984-05-07) May 7, 1984 (age 34)
St. John's, Newfoundland
Nationality Canadian
Occupation Actor, director
Years active 2005–present
Spouse(s) Georgina Reilly (2013–present)

Mark O'Brien (born May 7, 1984) is a Canadian actor and director. He is best known for playing the roles of Des Courtney in Republic of Doyle and Tom Rendon in Halt and Catch Fire.[1][2][3]

Personal life[edit]

O'Brien married fellow CBC network star Georgina Reilly on January 6, 2013, after having met on the set of the show in 2011.[4]


Year Title Role Notes
2005 Downward Calling John Doe Short
2008 Patiently Wasting Paul Short
2008 The One That Got Away Tommy Palchek TV movie
2008 Epilogue Henry Short
2008 Heartless Disappearance Into Labrador Seas Charlie Short
2009 Quiet at Dawn Watts
2009 Grown Up Movie Star Will
2009 Mum's the Word Curtis Short
2009 Cut from the Same Cloth Jack Cochrane Short
2010 Brad Brad Short
2010 Snarbuckled Jacob O'Higgins Short
2012 Beat Down Michael
2012 Better People John Short
2013 Sweetieface Short
2015 Dennis Dennis Short
2015 End of Days, Inc. Jason
2015 Len and Company Zach
2016 Arrival Captain Marks
2018 Parallell Josh
2018 State Like Sleep Darren
2018 Anon Lester Goodman
2018 How It Ends Jeremiah
2018 The Darkest Minds Rob Meadows
2018 Kin Jake Stanton
2018 The Front Runner Billy Shore Post-production
2018 Bad Times at the El Royale Post-production
2019 Untitled Noah Baumbach Project Carter Post-production
Year Title Role Notes
2005 Legends and Lore of the North Atlantic
2005–2007 Kids' CBC Himself
2006 Above and Beyond Drake 2 episodes
2010–2014 Republic of Doyle Des Courtney 78 episodes
2011 Warehouse 13 Jerry Hoffler 1 episode
2012 Diary of a Deadly P.I. Des Courtney 12 episodes
2012 Murdoch Mysteries Jerome Bradley 1 episode
2013 This Hour Has 22 Minutes Des Courtney 1 episode
2014 Hannibal Randall Tier 2 episodes
2014 Saving Hope Marshall Parker 1 episode
2015–2016 Halt and Catch Fire Tom Rendon 14 episodes
2017 The Last Tycoon Max Miner 9 episodes

Director, producer and writer[edit]

Title Year Credited as Notes Ref(s)
Director Writer Producer Actor Other
Downward Calling 2005 Yes Yes Yes Yes Yes Short film
Lying Awake 2006 Yes Yes Yes Yes Yes Short film
Cinematographer, composer and editor
Pretty Girls 2008 Yes No No No Yes Short film
Editor and cinematographer
Brad 2010 No No Yes Yes Yes Short film
Kathy 2011 Yes No No No No Short film
Better People 2012 Yes Yes No Yes Yes Short film
Sweetieface 2013 Yes No No Yes Yes Short film
Dennis 2015 No No Yes Yes No Short film


  1. ^ Wagmeister, Elizabeth (February 19, 2015). "AMC's 'Halt and Catch Fire' Adds Two Cast Members for Season 2". Variety. Retrieved July 27, 2015. 
  2. ^ Barsanti, Sam (February 19, 2015). "Aleksa Palladino and Mark O'Brien join AMC's Halt And Catch Fire". The A.V. Club. Retrieved July 27, 2015. 
  3. ^ "Mark O'Brien cast in AMC's Halt and Catch Fire". March 1, 2015. Retrieved July 27, 2015. 
  4. ^ Emily Pratt (February 1, 2013). "CBC wedding edition: Mark O'Brien and Georgina Reilly". CBC Live. Retrieved February 15, 2013. 

External links[edit]