Acting
Brian O'Neill is an actor and director.
The Bourne Legacy
2012 · Landy Reporter
Burn After Reading
2008 · Hal
Avatar: The Last Airbender
2005 · Gansu (voice)
Law & Order: Special Victims Unit
1999 · Chief Sullivan
Gotham
2014 · Robert Hastings
The Blacklist
2013 · Gen. Warren Ames
Homeland
2011 · Director Stendig
Blindspot
2015 · Coach Jones
Person of Interest
2011 · Judge Peterson
Elementary
2012 · Kemper Family Attorney
The Night Agent
2023 · Andre Kimbal
Law & Order
1990 · Jack Donovan
Relay
2025 · USPS Clerk - Terry
Sheriff Country
2025 · Kurt
The Mealybug
2024 · Dean Olivetti
American Sports Story: Aaron Hernandez
2024 · President Bernie Machen
The Blacklight
2021 · Benny
FBI: Most Wanted
2020 · Donald Jennings
American Dreamin'
2019 · Stage Manager
Seven Seconds
2018 · Judge Robert P. Dolan
Lillies in the Forest
2017
My Sordid Affair
2017 · Noah Parker
Search Party
2016 · Mick
Frank the Bastard
2015 · Joe O'Conner
Madam Secretary
2014 · Navy Admiral
Unforgettable
2011 · Frank Harbert
The Good Wife
2009 · Judge Earl Hovick
Cupid
2009 · Supervisor
2017 · Director
Blood and Money
2020 · Executive Producer
