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Cillian O'Sullivan

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Cillian O'Sullivan (born 1989 or 1990)[1] is an American-born Irish actor who has had roles in Then You Run (Sky 2023),[2] In From the Cold (Netflix 2022),[3] Bull (CBS 2019),[4] Vikings (History 2016),[5] 6Degrees (BBC 2012),[6] Single-Handed (RTÉ 2009),[7] and Seacht (BBC/TG4 2008).[8]

Born in New York to Irish parents,[1] O'Sullivan's family moved back to Ireland when he was a child, and he attended school in Ballinlough, Cork.[9] From an Irish-speaking family,[1] his first television roles were in Irish language productions for TG4.[8] After roles in several BBC productions,[8] and playing Bobby Storey in the 2017 film Maze,[1] O'Sullivan moved to the US, obtaining recurring roles in NBC and Netflix series.[5][9] Misty Button, in which he had a lead role,[10] won the "best narrative feature" at the 2019 San Luis Obispo International Film Festival.[11]

In 2021, he filmed a Sky Studios series titled Then You Run,[9][12] which was released in July 2023.[2] As of 2022, O'Sullivan was reportedly working on a film titled The Lost Princess.[13]

In 2025, O'Sullivan appeared as Devlin, an Irish gangster, in Daredevil: Born Again,[14][15] and as Dr. Roger Korby in the third season of Star Trek: Strange New Worlds.[16]

References

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  1. 1 2 3 4 Sheridan, Colette (16 March 2019). "Cork men set for film premiere on Paddy's Day". The Echo. Retrieved 13 August 2025. Cillian, 29, will be at…
  2. 1 2 Lynch, Dónal (8 July 2023). "'I was screaming at people online, coked off my head': Corkman Cillian O'Sullivan's journey from wild child to TV's hottest new talent". Irish Independent. Retrieved 13 August 2025.
  3. ↑ "Cork Actor Cillian O'Sullivan Lands Lead Role In New Netflix Series 'In From The Cold'". Cork's Red FM. 27 January 2022. Archived from the original on 28 March 2023. Retrieved 5 February 2022.
  4. ↑ "My Casting Story: Cillian O'Sullivan on 'In from the Cold'". castingnetworks.com. 6 April 2022. Retrieved 8 July 2022.
  5. 1 2 "Cork's Cillian O'Sullivan comes In From the Cold". rte.ie. RTÉ. 27 January 2022. Retrieved 5 February 2022.
  6. ↑ "Meet the cast of Netflix's In From the Cold". radiotimes.com. Retrieved 5 February 2022.
  7. ↑ "BBC drama follows six freshers starting university in Belfast". bbc.com. BBC. 24 February 2012. Retrieved 5 February 2022.
  8. 1 2 3 "6Degrees - Conor Martin". bbc.co.uk. BBC. Retrieved 5 February 2022.
  9. 1 2 3 "In From the Cold: Cork actor Cillian O'Sullivan on his new Netflix spy thriller". irishexaminer.com. Irish Examiner. 4 February 2022. Retrieved 5 February 2022.
  10. ↑ "Cork actors Cillian O'Sullivan and Shaun Kennedy feature in New York crime caper movie Misty Button". The Corkman. 18 August 2021. Retrieved 28 July 2023.
  11. ↑ "Irish-American Feature Film 'Misty Button' Wins Best Narrative Feature Award on St. Patrick's Day". iftn.ie. 20 March 2019. Retrieved 28 July 2023.
  12. ↑ "Dreharbeiten des Sky Original "Then You Run" haben begonnen". presseportal.de (in German). News aktuell GmbH. 24 August 2021. Retrieved 24 September 2022.
  13. ↑ "Mourad Zaoui And His Upcoming Role In The New Action Adventure Film, The Lost Princess". indiewrapmag.com. 20 April 2022. Retrieved 6 October 2023.
  14. ↑ "Daredevil: Born Again (TV Series 2025– ) - Full cast & crew - IMDb". www.imdb.com. Retrieved 26 March 2025.
  15. ↑ "I had to learn Cork ways, says New York-born actor Cillian". echolive.ie. The Echo. 29 May 2025. Retrieved 17 July 2025.
  16. ↑ "Cillian O'Sullivan Says His Roger Korby Has A "Smidge" Of Darkness In 'Star Trek: Strange New Worlds' S3". trekmovie.com. 19 June 2025. Retrieved 17 July 2025.
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