Cillian O'Sullivan

Cillian O'Sullivan

Actor Sep 28 (age 36) New York, USA 2008–2025 (17 year career)

6.9 avg rating

Highest Rated

Chicago P.D.

Chicago P.D.

2014 · as Shane Sullivan

Vikings

Vikings

2013 · as Eirik

Daredevil: Born Again

Daredevil: Born Again

2025 · as Devlin

Known For

Halo: Nightfall

Halo: Nightfall

Christian Ramsey (uncredited)

In From the Cold

In From the Cold

Chauncey

Maze

Maze

Bobby

The Lost Princess

The Lost Princess

Alec Touati

Vikings

Vikings

Eirik

Chicago P.D.

Chicago P.D.

Shane Sullivan

The Blacklist

The Blacklist

Skip Sutherland

Star Trek: Strange New Worlds

Star Trek: Strange New Worlds

Dr. Roger Korby

Filmography

Acting (15)

·

Movies (5)

The Lost Princess

The Lost Princess

as Alec Touati

Misty Button

as James

Maze

Maze

as Bobby

Halo: Nightfall

Halo: Nightfall

as Christian Ramsey (uncredited)

Uncle Bill's Barrel

as Tom Lynch

Television (10)

Daredevil: Born Again

Daredevil: Born Again

as Devlin

The Boy That Never Was

The Boy That Never Was

as Dave Garrick

Then You Run

Then You Run

as Orin

Star Trek: Strange New Worlds

Star Trek: Strange New Worlds

as Dr. Roger Korby

In From the Cold

In From the Cold

as Chauncey

Bull

Bull

as Nathan Alexander

Chicago P.D.

Chicago P.D.

as Shane Sullivan

The Blacklist

The Blacklist

as Skip Sutherland

Vikings

Vikings

as Eirik

Seacht

as Michael