Cillian O'Sullivan
- Acting
- September 28, 1989 · New York, USA
Known for
Filmography
- The Lost Princess · Alec Touati
- Daredevil: Born Again · Devlin
- The Boy That Never Was · Dave Garrick
- Then You Run · Orin
- Star Trek: Strange New Worlds · Dr. Roger Korby
- In From the Cold · Chauncey
- FBI: Most Wanted · Scot Weitzen
- Misty Button · James
- Maze · Bobby
- Bull · Nathan Alexander
- Halo: Nightfall · Christian Ramsey (uncredited)
- Chicago P.D. · Shane Sullivan
- The Blacklist · Skip Sutherland
- Vikings · Eirik
- 6Degrees · Conor Martin
- Uncle Bill's Barrel · Tom Lynch
- Seacht · Michael