★ HOW OLD IS MARK O'BRIEN?
Mark O'Brien is 42 years old, born May 7, 1984 in CA · Taurus.
#762of 4,831 Writers on HotBirthdays
★ LEDE
About
Mark O'Brien built a dual career as a Canadian actor and screenwriter-director, anchoring roles in Republic of Doyle and Halt and Catch Fire before pivoting to auteur work. Born May 7, 1984, he won a Canadian Screen Award for his performance as Terry Sawchuk in Goalie. His directorial debut The Righteous (which he also wrote) earned two CSA nominations and festival prizes for screenplay and cinematography. As a Taurus, he channels creative depth into character-driven narratives.
★ FEATURE
Biography
Mark O'Brien (born May 7, 1984) is a Canadian actor and director who moved fluidly between television and prestige film work. He anchored two high-profile TV roles: Des Courtney in Republic of Doyle (2010–2014) and Tom Rendon in Halt and Catch Fire (2015–2016), establishing himself as a trusted supporting presence on both Canadian and American networks. His transition to leading-man material came with the biographical drama Goalie, where he played Terry Sawchuk and earned the Canadian Screen Award for Best Actor at the 8th CSA ceremony. At the 10th Canadian Screen Awards in 2022, he received two nominations—Best Supporting Actor and Best Original Screenplay—for The Righteous, a film he both wrote and directed. The project demonstrates his range: it won Best Screenplay at the Fantasia International Film Festival in Montreal and at Manchester's Grimmfest, plus Best Cinematography at both Grimmfest and the Blood in the Snow Canadian Film Festival. As a Life Path 7, O'Brien embodies the introspective, analytical sensibility common to writer-directors. Born under Taurus, he channels steadfast commitment into character work and auteur projects. His occupation spans performance, writing, and direction, roles that demand sustained presence and narrative clarity.
★ SIDEBAR
Trivia
- O'Brien played Des Courtney across five seasons of the Canadian crime series Republic of Doyle (2010–2014).
- His role as Tom Rendon in Halt and Catch Fire (2015–2016) brought him into the prestige tech-drama sphere alongside Mackenzie Davis and Scoot McNairy.
- The Righteous marks O'Brien's directorial debut and won Best Screenplay at both the Fantasia International Film Festival and Grimmfest.
★ SIDEBAR
Numerology
LIFE-PATH NUMBER
The Seeker
Analytical and private. Mark O'Brien release rarely but deeply, and tend to reward fans with unusual artistic depth rather than constant output.
★ ALL LIFE-PATH 7 CELEBS →★ ASTROLOGY
Birthday compatibility
By Chinese zodiac — san-he trine for best matches, opposing pair for the most friction-prone.
HIGHLY COMPATIBLE
- IsaacMonkey · 2004
- Griffin GluckDragon · 2000
- Jade PettyjohnDragon · 2000
- Ruby StokesDragon · 2000
- Robbie UreMonkey · 2004
CHALLENGING
- Ádám SimonHorse · 1990
- Chris Colfer
★ FAQ
Frequently asked
- How old is Mark O'Brien?
- Mark O'Brien is 42 years old (born May 7, 1984).
- When is Mark O'Brien's birthday?
- Mark O'Brien was born on May 7, 1984.
- What is Mark O'Brien's zodiac sign?
- Mark O'Brien is a Taurus, born May 7, 1984.
- What is Mark O'Brien's Chinese zodiac sign?
- Mark O'Brien was born in 1984, the year of the Wood Rat.
- Where is Mark O'Brien from?
- Mark O'Brien is from CA.
- What does Mark O'Brien do?
- Mark O'Brien is a writer.
- Is Mark O'Brien still alive?
#34,976
