Acting
Brian O'Neill
Brian O'Neill is an actor and director.
Known for
Highlights
Avatar: The Last Airbender
2005 · Series · Gansu (voice)
Law & Order: Special Victims Unit
1999 · Series · Chief Sullivan
Gotham
2014 · Series · Robert Hastings
The Blacklist
2013 · Series · Gen. Warren Ames
Person of Interest
2011 · Series · Judge Peterson
Homeland
2011 · Series · Director Stendig
Filmography
Movies
13 films
Dark Hollow
2026 · Film
Relay
2025 · Film · USPS Clerk - Terry
The Mealybug
2024 · Film · Dean Olivetti
The Blacklight
2021 · Film · Benny
American Dreamin'
2019 · Film · Stage Manager
Lillies in the Forest
2017 · Film
Frank the Bastard
2015 · Film · Joe O'Conner
The Bourne Legacy
2012 · Film · Landy Reporter
Burn After Reading
2008 · Film · Hal
Chapter 27
2007 · Film · Patrick
Brooklyn Rules
2007 · Film · Priest
Laws of Attraction
2004 · Film · Limo Driver
Three Long Years
2003 · Film · Folk Singer
Filmography
Series
25 shows
Sheriff Country
2025 · Series · Kurt
American Sports Story: Aaron Hernandez
2024 · Series · President Bernie Machen
The Night Agent
2023 · Series · Andre Kimbal
FBI: Most Wanted
2020 · Series · Donald Jennings
Seven Seconds
2018 · Series · Judge Robert P. Dolan
My Sordid Affair
2017 · Series · Noah Parker
Search Party
2016 · Series · Mick
Blindspot
2015 · Series · Coach Jones
Gotham
2014 · Series · Robert Hastings
Madam Secretary
2014 · Series · Navy Admiral
The Blacklist
2013 · Series · Gen. Warren Ames
666 Park Avenue
2012 · Series · Monsignor Williams
Elementary
2012 · Series · Kemper Family Attorney
Homeland
2011 · Series · Director Stendig
Person of Interest
2011 · Series · Judge Peterson
Unforgettable
2011 · Series · Frank Harbert
The Good Wife
2009 · Series · Judge Earl Hovick
Cupid
2009 · Series · Supervisor
Damages
2007 · Series · Lester Donohue
Law & Order: Trial by Jury
2005 · Series · Zack Martel
Avatar: The Last Airbender
2005 · Series · Gansu (voice)
Law & Order: Criminal Intent
2001 · Series · Robert Kelly
Third Watch
1999 · Series · Father O'Roarke
Law & Order: Special Victims Unit
1999 · Series · Chief Sullivan
Law & Order
1990 · Series · Jack Donovan
