From Wikipedia, the free encyclopedia.
From Wikipedia, the free encyclopedia.
Michael O'Neill (born May 29, 1951) is an American actor. With a career stretching through three decades, he usually portrays senior law enforcement or military officers. He is perhaps best known for his role as Special agent Ron Butterfield, the head of President Josiah Bartlet's Secret Service detail, on The West Wing. He played CTU Administrative Director Richard Walsh in the first two episodes of 24. He played Sgt. Maj. Ron Cheals in the CBS action-drama series The Unit. He starred in the Season Six 2 part Finale of Grey's Anatomy as the broken widower who holds the hospital hostage with a 9mm while pursuing the doctors responsible for unplugging his wife. His most notable film performances occur in Seabiscuit, Secondhand Lions, Transformers, Dancer, Texas Pop 81, Traffic, Sea of Love, A Quiet Little Marriage, Nothing But the Truth, and Green Zone. O'Neill graduated from Auburn University in 1974. After attending Auburn he spent time under the tutelage of actor Will Geer and his daughter, Ellen, at Theatricum Botanicum in Los Angeles before moving to New York to pursue his career there.
External links
IMDb: https://www.imdb.com/title/nm0642259
Wikipedia: https://www.wikidata.org/wiki/Q3308419
Facebook: https://facebook.com/thismichaeloneill
Instagram: https://instagram.com/thismichaeloneill
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Filmography (Movies)
War of the Worlds
Character:Secretary of Defense Walter Crystal
Release Date:29/07/2025
Bride Hard
Character:Frank
Release Date:19/06/2025
Air
Character:Joe Dean
Release Date:05/04/2023
Cold Call
Character:Christian
Release Date:04/02/2021
The Stand at Paxton County
Character:Dell Connelly
Release Date:02/05/2020
Clemency
Character:Chaplain David Kendricks
Release Date:27/12/2019
Indivisible
Character:Chaplain Rogers
Release Date:26/10/2018
Danger One
Character:Beckwith
Release Date:14/09/2018
The Grim Sleeper
Character:Detective Simms
Release Date:15/03/2014
Dallas Buyers Club
Character:Richard Barkley
Release Date:01/11/2013
J. Edgar
Character:Senator McKellar
Release Date:09/11/2011
Green Zone
Character:Colonel Bethel
Release Date:11/03/2010
Flying Lessons
Character:Chief Dobbs
Release Date:04/02/2010
Nothing But the Truth
Character:CIA Director
Release Date:19/12/2008
A Quiet Little Marriage
Character:Bruce
Release Date:18/10/2008
Crazy
Character:Ralph Christianson
Release Date:02/03/2008
Transformers
Character:Tom Banacheck
Release Date:27/06/2007
Around the Bend
Character:Cowboy
Release Date:08/10/2004
American Crime
Character:Sheriff Smyth
Release Date:06/04/2004
Secondhand Lions
Character:Ralph
Release Date:19/09/2003
Seabiscuit
Character:Mr. Pollard
Release Date:22/07/2003
Dreamcatcher
Character:Gen. Matheson
Release Date:21/03/2003
Traffic
Character:Lawyer Rodman
Release Date:27/12/2000
The Legend of Bagger Vance
Character:O.B. Keeler
Release Date:02/11/2000
ATF
Character:ATF Asst. Director Ben Walker
Release Date:06/09/1999
The Mod Squad
Character:Greene
Release Date:26/03/1999
Dancer, Texas Pop. 81
Character:Mr. Lusk
Release Date:01/05/1998
Virtual Obsession
Character:
Release Date:01/02/1998
Standoff
Character:Cult Leader (Voice)
Release Date:11/01/1998
The Sunchaser
Character:Agent Moreland
Release Date:29/05/1996
Bushwhacked
Character:Jon Jordan
Release Date:04/08/1995
Awake to Danger
Character:Detective Brickman
Release Date:12/03/1995
Beyond Betrayal
Character:Ray Pasquerello
Release Date:11/10/1994
Blind Justice
Character:Spencer Heymen
Release Date:25/06/1994
Victim of Love: The Shannon Mohr Story
Character:Dick Britton
Release Date:09/11/1993
For Their Own Good
Character:Clark Thompson
Release Date:05/04/1993
Lorenzo's Oil
Character:School Psychologist
Release Date:30/12/1992
Jennifer Eight
Character:Serato
Release Date:06/11/1992
The Gun in Betty Lou's Handbag
Character:Jergens
Release Date:21/08/1992
An Unremarkable Life
Character:Michael
Release Date:12/10/1989
Sea of Love
Character:Raymond Brown
Release Date:15/09/1989
Ghost Story
Character:Churchill
Release Date:18/12/1981
Television Appearances
Happy Face
Character:D.A. Craig Calloway
Happy's Place
Character:Jim Jackoway
Fire Country
Character:Harlan Denbo
Echoes
Character:Victor McCleary
Outer Range
Character:Judge Pettigrew
Messiah
Character:Cameron Collier
The Romanoffs
Character:Ron Hopkins
Tom Clancy's Jack Ryan
Character:Senator Mitchell Chapin
The Resident
Character:Joshua Williams
S.W.A.T.
Character:Carl Luca
Shooter
Character:Ray Brooks
This Is Us
Character:Arlo
11.22.63
Character:Arliss Price
Manhattan
Character:Psychiatrist
Extant
Character:Alan Sparks
Rectify
Character:Senator Roland Foulkes
Bates Motel
Character:Nick Ford
Scandal
Character:Lonnie Mencken
Law & Order: LA
Character:Jeb Monroe
Rizzoli & Isles
Character:Jonathan McKnight
The Glades
Character:Trent Staley
FlashForward
Character:CIA Director Keller
NCIS: Los Angeles
Character:Ret. U.S. Army General Richard Collins
Leverage
Character:Judge Roy
The Mentalist
Character:Sheriff Nelson
Fringe
Character:Sheriff Velchik
Sons of Anarchy
Character:Anthony Franklin
Army Wives
Character:Reverend Bankerd
The Nine
Character:Pete Burton
The Unit
Character:Ron Cheals
Commander in Chief
Character:Congressman Wilcox
Ghost Whisperer
Character:Nolan
Criminal Minds
Character:Det. Yarbough
Close to Home
Character:Don Wheeler
Prison Break
Character:Herb Stanton
Grey's Anatomy
Character:Gary Clark
Numb3rs
Character:Boyd Keene
Boston Legal
Character:Dr. Robert McLean
LAX
Character:Alonso Mathews
NCIS
Character:Riley McCallister
Without a Trace
Character:Thomas Shannon
CSI: Miami
Character:Jerry Blackburn
24
Character:Richard Walsh
24
Character:Richard Welsh
Crossing Jordan
Character:Chris Benz
Boston Public
Character:Dr. Bernard Colbert
Roswell
Character:Philip Evans
The West Wing
Character:Ron Butterfield
Ally McBeal
Character:Dr. Colbert
The Shining
Character:Daniel Edwards (uncredited)
The Practice
Character:Judge Robert Temple
Millennium
Character:County Prosecutor Calvin Smith
JAG
Character:Commander Bradley
ER
Character:Col. Ken Kilner
Chicago Hope
Character:Bill Wyzinski
One West Waikiki
Character:
Diagnosis: Murder
Character:Sheriff Buck O'Hara
The X-Files
Character:Patrol Captain Van Gelder
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