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Cillian O'Sullivan - Actor & Filmmaker | The Couch Critic

Home/People/Cillian O'Sullivan

Place of Birth

New York, USA

Known For

Acting

Gender

Male

Career Highlights

6

Movies

10

TV Shows

Also Known As

Cillian O'Suilleabhain

Cillian Ó Súilleabháin

External Links

Cillian O'Sullivan

Blue Moon poster

Blue Moon

October 17, 2025

The Lost Princess poster

The Lost Princess

Misty Button poster

Misty Button

Maze poster

Maze

September 22, 2017

Halo: Nightfall poster

Halo: Nightfall

as Christian Ramsey (uncredited)

February 5, 2014

Uncle Bill's Barrel

October 18, 2008