Mark O’Brien Biography: Net Worth, Wife, Height, Age, Movies, Instagram, Wikipedia, Photos

Posted By Johnson Ajiboye

Mark O’Brien is a Canadian actor and director who has made a name for himself in the entertainment industry. With his talent and versatility, he has become one of the most sought-after actors in Canada.

O’Brien is best known for his roles as Des Courtney in the television series Republic of Doyle and Tom Rendon in Halt and Catch Fire.

He has received critical acclaim for his performances and has been recognized with numerous awards for his exceptional acting skills.


  • Full Name: Mark O’Brien
  • Date of Birth: May 7, 1984
  • Age: 39 years
  • Gender: Male
  • Place of Birth: St. John’s, Newfoundland, Canada
  • Nationality: Canadian
  • Profession: Actor, Director

Early Life & Education

Born on May 7, 1984, in St. John’s, Newfoundland, Mark O’Brien is 39 years old as of 2023. He is the son of a nurse and a truck driver and has three older sisters.

From a young age, O’Brien showed a passion for performing arts and decided to pursue a career in acting.

O’Brien completed his education at Memorial University of Newfoundland, where he majored in English. During university, he honed his acting skills and participated in various theater productions.

His dedication and talent were evident even then, as he consistently delivered outstanding performances.

Personal Life

In January 2013, Mark O’Brien married actress Georgina Reilly. The couple first met on the set of Republic of Doyle in 2011 and instantly connected.

They have been happily married ever since. Together, they have a child, further adding to the joy and fulfillment in their lives.

O’Brien’s personal life is filled with love and support, which undoubtedly contributes to his success in his professional endeavors.


Mark O’Brien’s career in the entertainment industry began in 2005 when he appeared in the short film “Downward Calling.”

He quickly gained recognition for his talent and was cast in various films and television series. O’Brien’s breakthrough came with his role as Des Courtney in the television series Republic of Doyle, which aired from 2010 to 2014.

His portrayal of Des Courtney received critical acclaim, establishing him as a talented actor in the industry.

In 2015, O’Brien joined the cast of the hit television series Halt and Catch Fire, portraying the character Tom Rendon. His performance in the show further solidified his status as a versatile actor.

O’Brien’s ability to bring depth and complexity to his characters has earned him praise from critics and audiences alike.

Aside from his success on the small screen, O’Brien has also significantly contributed to the film industry. In 2019, he delivered a remarkable performance as Terry Sawchuk in the biographical drama film Goalie, for which he won the Canadian Screen Award for Best Actor.

O’Brien’s passion for storytelling has also led him to explore directing and writing. His film The Righteous, which he wrote, directed, and starred in, received critical acclaim and won multiple awards at film festivals.

Net Worth

Mark O’Brien’s exceptional talent and successful career have undoubtedly contributed to his net worth. It is estimated that his net worth is approximately $9 million.

However, it is important to note that net worth can vary depending on ongoing projects, investments, and endorsements.

Social Media

  • Instagram: @markobrienforeal
  • Twitter: @markobrienact


  • Downward Calling
  • Patiently Wasting
  • Epilogue
  • Heartless Disappearance Into Labrador Seas
  • Quiet at Dawn
  • Grown Up Movie Star
  • Mum’s the Word
  • Cut from the Same Cloth
  • Brad
  • Snarbuckled
  • Beat Down
  • Better People
  • Sweetieface
  • Dennis
  • Len and Company
  • How to Plan an Orgy in a Small Town
  • Arrival
  • Parallel

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