Acting
Cillian O'Sullivan
Also Known As: Cillian O'Suilleabhain, Cillian Ó Súilleabháin
Birth Date
September 28, 1989
(36 years old)
Place of Birth
New York, USA
Popularity
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Photos
star7.6
TV Show
The Blacklist
Skip Sutherland
2013 • 2 episodes
star8.4
TV Show
Chicago P.D.
Shane Sullivan
2014 • 1 episode
star8.1
TV Show
Vikings
Eirik
2013 • 1 episode
star7.9
TV Show
Star Trek: Strange New Worlds
Dr. Roger Korby
2022 • 4 episodes
star7.6
TV Show
FBI: Most Wanted
Scot Weitzen
2020 • 1 episode
star8.2
TV Show
Daredevil: Born Again
Devlin
2025 • 3 episodes
star7.1
TV Show
Bull
Nathan Alexander
2016 • 1 episode
star6.7
TV Show
In From the Cold
Chauncey
2022 • 8 episodes
star6.8
Movie
Halo: Nightfall
Christian Ramsey (uncredited)
2014
star6.3
TV Show
The Boy That Never Was
Dave Garrick
2024 • 3 episodes
star5.8
Movie
Maze
Bobby
2017
TV Show
Seacht
Michael
2008 • 8 episodes
star5.1
TV Show
Then You Run
Orin
2023 • 8 episodes
star6.3
Movie
The Lost Princess
Alec Touati
2025
TV Show
6Degrees
Conor Martin
2012 • 18 episodes
star5.2
Movie
Misty Button
James
2019
Movie
Uncle Bill's Barrel
Tom Lynch
2008