Biography and filmography
Cillian O'Sullivan
Biography unavailable on TMDB.
Photos
Movies (5)
TV shows (12)

Daredevil: Born Again
2025 · Devlin

The Boy That Never Was
2024 · Dave Garrick

Then You Run
2023 · Orin

Star Trek: Nuevos y Extraños Mundos
2022 · Dr. Roger Korby

Venir del frío
2022 · Chauncey

FBI: Los más buscados
2020 · Scot Weitzen

Bull
2016 · Nathan Alexander

Policías de Chicago
2014 · Shane Sullivan

The Blacklist
2013 · Skip Sutherland

Vikings
2013 · Eirik

6Degrees
2012 · Conor Martin
Seacht
Seacht
2008 · Michael




