Mark O'Brien
- Birthday: 5/7/1984
- Place of birth: St. Johns, Newfoundland, Canada
- Fame for: Acting
- Also known as: Mark O’Brien
- Social networks: X (Twitter)
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).
Filmography
