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Biography
Cillian O'Sullivan is an American-born Irish actor who has had roles in Then You Run, In From the Cold, Bull, Vikings, 6Degrees, Single-Handed, and Seacht.
Source: Wikipedia · CC BY-SA
Filmography13 titles
Chicago P.D.
2014as Shane Sullivan
2014as Shane Sullivan
Daredevil: Born Again
2025as Devlin
2025as Devlin
Vikings
2013as Eirik
2013as Eirik
Star Trek: Strange New Worlds
2022as Dr. Roger Korby
2022as Dr. Roger Korby
FBI: Most Wanted
2020as Scot Weitzen
2020as Scot Weitzen
The Blacklist
2013as Skip Sutherland
2013as Skip Sutherland
Bull
2016as Nathan Alexander
2016as Nathan Alexander
In from the Cold
2022as Chauncey
2022as Chauncey
The Lost Princess
2025as Alec Touati
2025as Alec Touati
The Boy That Never Was
2024as Dave Garrick
2024as Dave Garrick
Maze
2017as Bobby
2017as Bobby
Misty Button
2019as James
2019as James
Then You Run
2023as Orin
2023as Orin