Mark O'Brien

Actor

Born: May 7, 1984, St. Johns, Newfoundland, Canada
Age: 42 years old
Zodiac: Taurus
Total works: 45 movies, 12 TV shows
Latest work: The Outer Threat (2026)
Genres: Drama,Science Fiction,Thriller

Mark O'Brien is a Canadian actor and director who played Des Courtney in Republic of Doyle (2010). He has appeared in various notable films, including Arrival (2016), Ready or Not (2019), The Front Runner (2018), and Blue Bayou (2021). O'Brien also featured in Hammer (2019). His television credits include a significant role as Tom Rendon in Halt and Catch Fire (2014).