Mark O'Brien

Critical Reception

6.2 / 10Avg critic score · 2 films

50%Fresh (score ≥ 60)

ArrivalHighest rated · 6.9 / 10

NurembergLowest rated · 5.5 / 10

Mark O'Brien is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle and Tom Rendon in Halt and Catch Fire.

Known For

6.9

Arrival

2016

Acting (2)

Sort:Year Critic Score

2025NurembergColonel John Amen
5.5
2016ArrivalCaptain Marks
6.9
7.9