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Mark O'Brien

Personal Info

Known For

Acting

Birthdate

1984-05-07 (Age: 42)

Place of Birth

St. Johns, Newfoundland, Canada

Mark O'Brien

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 (38)

⭐ 0 Role: William

The Voices of Our Mother

2026
⭐ 7.5 Role: Colonel John Amen

Nuremberg

2025
⭐ 0 Role: Elizeus Carrier

The Memory Keeper

2025
⭐ 5.7 Role: Mason Harper

Shadow of God

2025
⭐ 5.6 Role: Paul

Seven Veils

2025
⭐ 5.3 Role: Topper

Topper

2025
⭐ 7.4 Role: Ace

Blue Bayou

2021
⭐ 6.2 Role: Aaron Smith

The Righteous

2021
⭐ 5.4 Role: Chris Davis

Hammer

2019
⭐ 7.7 Role: Carter Mitchum

Marriage Story

2019
⭐ 7.1 Role: Alex

Ready or Not

2019
⭐ 7.0 Role: Terry Sawchuk

Goalie

2019
⭐ 4.7 Role: Darren

State Like Sleep

2019
⭐ 5.9 Role: Billy Shore

The Front Runner

2018
⭐ 6.8 Role: Larsen Rogers

Bad Times at the El Royale

2018