7.6
The Blacklist
2013· TV Series
Personal Info
Known For
Acting
Gender
Male
Birthday
September 28, 1989(36)
Place of Birth
New York, USA
Also Known As
Cillian O'SuilleabhainCillian Ó Súilleabháin
Cillian O'Sullivan
Acting
Biography
No biography available for Cillian O'Sullivan.
Known For
8.0
Daredevil: Born Again
2025· TV Series
Top
8.4
Chicago P.D.
2014· TV Series
Top
8.1
Vikings
2013· TV Series
7.0
Bull
2016· TV Series
8.0
Star Trek: Strange New Worlds
2022· TV Series
6.2
6.8
Halo: Nightfall
2014
6.7
In From the Cold
2022· TV Series
5.2
Then You Run
2023· TV Series
6.1
The Boy That Never Was
2024· TV Series
5.8
Maze
2017
Filmography
- 2025MovieThe Lost Princessas Alec Touati
- 2025TVDaredevil: Born Againas Devlin
- 2024TVThe Boy That Never Wasas Dave Garrick
- 2023TVThen You Runas Orin
- 2022TVStar Trek: Strange New Worldsas Dr. Roger Korby
- 2022TVIn From the Coldas Chauncey
- 2019MovieMisty Buttonas James
- 2017MovieMazeas Bobby
- 2016TVBullas Nathan Alexander
- 2014MovieHalo: Nightfallas Christian Ramsey (uncredited)
- 2014TVChicago P.D.as Shane Sullivan
- 2013TVThe Blacklistas Skip Sutherland
- 2013TVVikingsas Eirik