Personal details
Born:
- Born Place: New York, USA
Also Known As:
Cillian O'Suilleabhain, Cillian Ó Súilleabháin
Cillian O'Sullivan
Cillian O'Sullivan is an American-born Irish actor who was born in New York in 1989 (or 1990) to Irish parents and moved back to Ireland as a child, attending school in Ballinlough, Cork. He began his acting career in his teens, with his first on-screen roles being in Irish language productions for TG4, and later appeared in several BBC productions, including 6Degrees. After appearing in Vikings and the 2017 film Maze, O'Sullivan moved to the US to further his career, ultimately securing the male lead role of rogue CIA agent Chauncey Lew in the 2022 Netflix series In From the Cold. His other notable roles include Orin in the Sky Studios series Then You Run, a lead in the award-winning film Misty Button, and appearances as Dr. Roger Korby in Star Trek: Strange New Worlds and Devlin in Daredevil: Born Again.
