Mark O'Brien

Actor · Born May 7, 1984 (age 42) · St. Johns, Newfoundland, Canada

Actor · Age 42

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).

0.3Attention Score

#17,212in top people online yesterday

1,629 · By Attention Score on Nov 10 · of 69,126 people

Mark O'Brien movies and TV shows

7 TV shows and 4 movies in main roles

The Copenhagen Testas Edmund Cobb · 2025#1,670TV show
Nurembergas Colonel John Amen · 2025#254movie
Seven Veilsas Paul · 2025#5,877movie
61st Streetas Officer Logan · 2022–2024#1,896TV show
Your Honoras Father Jay · 2020–2023#1,294TV show
Perry Masonas Thomas Milligan · 2020–2023#1,285TV show
Marriage Storyas Carter Mitchum · 2019#2,014movie
City on a Hillas Jimmy Ryan · 2019–2022#1,550TV show
The Last Tycoonas Max Miner · 2017#2,832TV show
Arrivalas Captain Marks · 2016#458movie

Mark O'Brien track record

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#12,109Person since 2020Best 30 days: Mar to Apr 2026

0Days in the top 10Not yet

0Days at #1Not yet

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