Cillian O'Sullivan

Cillian O'Sullivan

Filmography

The Blacklist
The Blacklist
2013 · TV
as Skip Sutherland
Vikings
Vikings
2013 · TV
as Eirik
Chicago P.D.
Chicago P.D.
2014 · TV
as Shane Sullivan
FBI: Most Wanted
FBI: Most Wanted
2020 · TV
as Scot Weitzen
Daredevil: Born Again
Daredevil: Born Again
2025 · TV
as Devlin
Bull
Bull
2016 · TV
as Nathan Alexander
Star Trek: Strange New Worlds
Star Trek: Strange New Worlds
2022 · TV
as Dr. Roger Korby
In From the Cold
In From the Cold
2022 · TV
as Chauncey
The Boy That Never Was
The Boy That Never Was
2024 · TV
as Dave Garrick
Halo: Nightfall
Halo: Nightfall
2014 · Movie
as Christian Ramsey (uncredited)
Then You Run
Then You Run
2023 · TV
as Orin
The Lost Princess
The Lost Princess
2025 · Movie
as Alec Touati
Maze
Maze
2017 · Movie
as Bobby
Misty Button
Misty Button
2019 · Movie
as James