Cillian O'Sullivan
Known for: Acting
Born: September 27, 1989 in New York, USA
Known for
Showing 15 of 15 titles
6.3
MOVIE
The Lost Princess
Alec Touati
2025
Action
0.0
MOVIE
Uncle Bill's Barrel
Tom Lynch
2008
Comedy
5.9
MOVIE
Maze
Bobby
2017
Drama
5.2
MOVIE
Misty Button
James
2019
Comedy
6.8
MOVIE
Halo: Nightfall
Christian Ramsey (uncredited)
2014
Sci-Fi
8.1
TV
Vikings
Eirik
2013
Drama
6.7
TV
In From the Cold
Chauncey
2022
Drama
5.2
TV
Then You Run
Orin
2023
Drama
8.4
TV
Chicago P.D.
Shane Sullivan
2014
Crime
7.6
TV
The Blacklist
Skip Sutherland
2013
Drama
7.1
TV
Bull
Nathan Alexander
2016
Crime
8.0
TV
Daredevil: Born Again
Devlin
2025
Drama
0.0
TV
Seacht
Michael
2008
Drama
8.0
TV
Star Trek: Strange New Worlds
Dr. Roger Korby
2022
Drama
6.1
TV
The Boy That Never Was
Dave Garrick
2024
Drama