
Acting
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).

The Voices of Our Mother
as William

Nuremberg
as Colonel John Amen

Topper
as Topper

Shadow of God
as Mason Harper

Seven Veils
as Paul

The Memory Keeper
as Elizeus Carrier

Blue Bayou
as Ace

The Righteous
as Aaron Smith

Ready or Not
as Alex

Marriage Story
as Carter Mitchum

The Copenhagen Test
as Edmund Cobb · 8 ep.

The Sticky
as Charlie · 1 ep.

61st Street
as Officer Logan · 8 ep.

Perry Mason
as Thomas Milligan · 7 ep.

Your Honor
as Father Jay · 3 ep.

The Kelly Clarkson Show
as Self · 1 ep.

City on a Hill
as Jimmy Ryan · 14 ep.

The Last Tycoon
as Max Miner · 9 ep.

Killjoys
as Grayson Hicks · 1 ep.

Halt and Catch Fire
as Tom Rendon · 15 ep.
Bad Times at the El Royale
2018