Brian O'Neill
Acting 41 credits
Biography
Brian O'Neill works in acting. Archytele lists 41 screen credits below. A full profile for this page is being written and will appear here once verified against sources.
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Frequent co-stars
Career timeline
Sheriff CountryRelay
American Sports Story: Aaron HernandezThe Mealybug
The Night Agent
The Blacklight
FBI: Most WantedBlood and Money · Executive Producer
American Dreamin'
Seven Seconds
My Sordid AffairLillies in the ForestLillies in the Forest · Director
Search Party
BlindspotFrank the Bastard
GothamMadam Secretary
The Blacklist
ElementaryThe Bourne Legacy
Person of InterestHomelandUnforgettable
The Good WifeCupid
Burn After Reading
DamagesBrooklyn RulesChapter 27
Avatar: The Last AirbenderLaw & Order: Trial by Jury
Laws of Attraction
Three Long Years
Law & Order: Criminal Intent
Law & Order: Special Victims UnitThird Watch
Law & OrderLaw & OrderLaw & OrderLaw & Order
Full filmography
- Sheriff Country (2025) as Kurt
- Relay (2025) as USPS Clerk - Terry
- American Sports Story: Aaron Hernandez (2024) as President Bernie Machen
- The Mealybug (2024) as Dean Olivetti
- The Night Agent (2023) as Andre Kimbal
- The Blacklight (2021) as Benny
- FBI: Most Wanted (2020) as Donald Jennings
- Blood and Money (2020) Executive Producer
- American Dreamin' (2019) as Stage Manager
- Seven Seconds (2018) as Judge Robert P. Dolan
- My Sordid Affair (2017) as Noah Parker
- Lillies in the Forest (2017)
- Lillies in the Forest (2017) Director
- Search Party (2016) as Mick
- Blindspot (2015) as Coach Jones
- Frank the Bastard (2015) as Joe O'Conner
- Gotham (2014) as Robert Hastings
- Madam Secretary (2014) as Navy Admiral
- The Blacklist (2013) as Gen. Warren Ames
- Elementary (2012) as Kemper Family Attorney
- The Bourne Legacy (2012) as Landy Reporter
- Person of Interest (2011) as Judge Peterson
- Homeland (2011) as Director Stendig
- Unforgettable (2011) as Frank Harbert
- The Good Wife (2009) as Judge Earl Hovick
- Cupid (2009) as Supervisor
- Burn After Reading (2008) as Hal
- Damages (2007) as Lester Donohue
- Brooklyn Rules (2007) as Priest
- Chapter 27 (2007) as Patrick
- Avatar: The Last Airbender (2005) as Gansu (voice)
- Law & Order: Trial by Jury (2005) as Zack Martel
- Laws of Attraction (2004) as Limo Driver
- Three Long Years (2003) as Folk Singer
- Law & Order: Criminal Intent (2001) as Robert Kelly
- Law & Order: Special Victims Unit (1999) as Chief Sullivan
- Third Watch (1999) as Father O'Roarke
- Law & Order (1990) as Jack Donovan
- Law & Order (1990) as Frances Curran
- Law & Order (1990) as Russell Woods
- Law & Order (1990) as Eddie Collins