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

Ready or Not
Ready or Not

2019

as Alex

Arrival
Arrival

2016

as Captain Marks

Nuremberg
Nuremberg

2025

as Colonel John Amen

The Outer Threat
The Outer Threat

2026

Marriage Story
Marriage Story

2019

as Carter Mitchum

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

2018

as Larsen Rogers

The Memory Keeper
The Memory Keeper

2025

as Elizeus Carrier

The Darkest Minds
The Darkest Minds

2018

as Rob Meadows

How It Ends
How It Ends

2018

as Jeremiah

Anon
Anon

2018

as Cyrus Frear

Kin
Kin

2018

as Jake

The Front Runner
The Front Runner

2018

as Billy Shore

Parallel
Parallel

2018

as Josh

Shadow of God
Shadow of God

2025

as Mason Harper

Blue Bayou
Blue Bayou

2021

as Ace

Seven Veils
Seven Veils

2025

as Paul

State Like Sleep
State Like Sleep

2019

as Darren

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

2015

as Bruce Buck

The Four Horsemen
The Four Horsemen

2008

as Eric Rollins

Little One
Little One