CO
Cillian O'Sullivan
Actor
Cillian O'Sullivan Filmography
| 2025 | The Lost Princess · as Alec Touati |
| 2025 | Daredevil: Born Again (TV Series) · as Devlin |
| 2024 | The Boy That Never Was (TV Series) · as Dave Garrick |
| 2023 | Then You Run (TV Series) · as Orin |
| 2022 | Star Trek: Strange New Worlds (TV Series) · as Dr. Roger Korby |
| 2022 | In From the Cold (TV Series) · as Chauncey |
| 2020 | FBI: Most Wanted (TV Series) · as Scot Weitzen |
| 2019 | Misty Button · as James |
| 2018 | Taken Down (TV Series) · as Dunnie |
| 2017 | |
| 2016 | Bull (2016) (TV Series) · as Nathan Alexander |
| 2014 | Halo: Nightfall (TV Series) · as Christian Ramsey |
| 2014 | Halo: Nightfall · as Christian Ramsey (uncredited) |
| 2014 | Chicago P.D. (TV Series) · as Shane Sullivan |
| 2013 | The Blacklist (TV Series) · as Skip Sutherland |
| 2013 | Vikings (TV Series) · as Eirik |
| 2013 | Respite at Christmas · as John |
| 2012 | 6Degrees (TV Series) · as Conor Martin |
| 2007 | Single-Handed (TV Series) · as Andy |