Cillian O'Sullivan
Cillian O'Sullivan is credited on 3 movies and 10 TV shows, best known by TMDB votes for Vikings, The Blacklist and Chicago P.D..
Born September 28, 1989 in New York, USA.
Filmography · 13 titles
US streaming apps shown for the 12 best-known titles, checked October 6, 2026. Tap any title for where it streams and what it costs.
Vikings
2013 · TV show
On Netflix
The Blacklist
2013 · TV show
On Netflix
Chicago P.D.
2014 · TV show
On Peacock and Prime Video
Daredevil: Born Again
2025 · TV show
On Hulu and Disney+
Star Trek: Strange New Worlds
2022 · TV show
On Paramount+
FBI: Most Wanted
2020 · TV show
On Peacock
Bull
2016 · TV show
On Paramount+
Halo: Nightfall
2014 · Movie
Not on a US subscription app
In From the Cold
2022 · TV show
On Netflix
Maze
2017 · Movie
On Prime Video and FlixFling
The Lost Princess
2025 · Movie
On Prime Video
The Boy That Never Was
2024 · TV show
On Hulu
Then You Run
2023 · TV show