Screenings
Mark O'Brien

Mark O'Brien

Born 1984-05-07 (age 42) St. Johns, Newfoundland, Canada
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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).

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Known For

Arrival
Arrival

2016

as Captain Marks

Ready or Not
Ready or Not

2019

as Alex

Nuremberg
Nuremberg

2025

as Colonel John Amen

The Voices of Our Mother
The Voices of Our Mother

2026

as William

Marriage Story
Marriage Story

2019

as Carter Mitchum

The Darkest Minds
The Darkest Minds

2018

as Rob Meadows

Bad Times at the El Royale
Bad Times at the El Royale

2018

as Larsen Rogers

How It Ends
How It Ends

2018

as Jeremiah

Kin
Kin

2018

as Jake

Anon
Anon

2018

as Cyrus Frear

Seven Veils
Seven Veils

2025

as Paul

Shadow of God
Shadow of God

2025

as Mason Harper

The Front Runner
The Front Runner

2018

as Billy Shore

Parallel
Parallel

2018

as Josh

The Outer Threat
The Outer Threat

2026

How to Plan an Orgy in a Small Town
How to Plan an Orgy in a Small Town

2015

as Bruce Buck

Blue Bayou
Blue Bayou

2021

as Ace

Hammer
Hammer

2019

as Chris Davis

The Righteous
The Righteous

2021

as Aaron Smith

Goalie
Goalie

2019

as Terry Sawchuk