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Personal Info
Known For
Acting
Birthday
May 29, 1947
Place of Birth
Montgomery, Alabama, USA
Also Known As
- مایکل اونیل
Michael O'Neill
1.3 Popularity
Biography
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.
Known For
4.2
Secretary of Defense Walter Crystal
War of the Worlds
2025
5.6
Frank
Bride Hard
2025
6.9
D.A. Craig Calloway
Happy Face
2025
6.1
Jim Jackoway
Happy's Place
2024
7.3
Joe Dean
Air
2023
8.2
Harlan Denbo
Fire Country
2022
6.6
Victor McCleary
Echoes
2022
6.9
Judge Pettigrew
Outer Range
2022
0.0
Christian
Cold Call
2021
5.9
Dell Connelly
The Stand at Paxton County
2020
Credits
War of the Worlds
as Secretary of Defense Walter Crystal
2025
4.2
Bride Hard
as Frank
2025
5.6
Happy Face
as D.A. Craig Calloway
2025
6.9
Happy's Place
as Jim Jackoway
2024
6.1
Air
as Joe Dean
2023
7.3
Fire Country
as Harlan Denbo
2022
8.2
Echoes
as Victor McCleary
2022
6.6
Outer Range
as Judge Pettigrew
2022
6.9
Cold Call
as Christian
2021
0.0
The Stand at Paxton County
as Dell Connelly
2020
5.9
Messiah
as Cameron Collier
2020
7.2
Clemency
as Chaplain David Kendricks
2019
6.3
Indivisible
as Chaplain Rogers
2018
6.8
The Romanoffs
as Ron Hopkins
2018
6.3
Danger One
as Beckwith
2018
5.9
Tom Clancy's Jack Ryan
as Senator Mitchell Chapin
2018
7.7
The Resident
as Joshua Williams
2018
8.4
S.W.A.T.
as Carl Luca
2017
8.1
Shooter
as Ray Brooks
2016
7.2
This Is Us
as Arlo
2016
8.2
11.22.63
as Arliss Price
2016
7.8
Manhattan
as Psychiatrist
2014
7.1
Extant
as Alan Sparks
2014
6.3
The Grim Sleeper
as Detective Simms
2014
4.9
Dallas Buyers Club
as Richard Barkley
2013
7.9
Rectify
as Senator Roland Foulkes
2013
7.6
Bates Motel
as Nick Ford
2013
8.1
Scandal
as Lonnie Mencken
2012
7.2
J. Edgar
as Senator McKellar
2011
6.2
Law & Order: LA
as Jeb Monroe
2010
6.8
Rizzoli & Isles
as Jonathan McKnight
2010
7.9
The Glades
as Trent Staley
2010
6.9
Green Zone
as Colonel Bethel
2010
6.5
Flying Lessons
as Chief Dobbs
2010
5.6
FlashForward
as CIA Director Keller
2009
7.0
NCIS: Los Angeles
as Ret. U.S. Army General Richard Collins
2009
7.5
Nothing But the Truth
as CIA Director
2008
6.9
Leverage
as Judge Roy
2008
7.6
A Quiet Little Marriage
as Bruce
2008
5.1
The Mentalist
as Sheriff Nelson
2008
8.4
Fringe
as Sheriff Velchik
2008
8.1
Sons of Anarchy
as Anthony Franklin
2008
8.4
Crazy
as Ralph Christianson
2008
5.3
Transformers
as Tom Banacheck
2007
6.8
Army Wives
as Reverend Bankerd
2007
7.5
The Nine
as Pete Burton
2006
5.8
The Unit
as Ron Cheals
2006
7.3
Commander in Chief
as Congressman Wilcox
2005
7.7
Ghost Whisperer
as Nolan
2005
8.1
Criminal Minds
as Det. Yarbough
2005
8.3
Close to Home
as Don Wheeler
2005
5.9
Prison Break
as Herb Stanton
2005
8.1
Grey's Anatomy
as Gary Clark
2005
8.2
Numb3rs
as Boyd Keene
2005
7.0
Around the Bend
as Cowboy
2004
5.9
Boston Legal
as Dr. Robert McLean
2004
7.9
LAX
as Alonso Mathews
2004
7.1
American Crime
as Sheriff Smyth
2004
3.6
NCIS
as Riley McCallister
2003
7.6
Secondhand Lions
as Ralph
2003
7.2
Seabiscuit
as Mr. Pollard
2003
7.1
Dreamcatcher
as Gen. Matheson
2003
5.6
Without a Trace
as Thomas Shannon
2002
7.2
CSI: Miami
as Jerry Blackburn
2002
7.7
24
as Richard Walsh
2001
7.8
24
as Richard Welsh
2001
7.8
Crossing Jordan
as Chris Benz
2001
7.2
Traffic
as Lawyer Rodman
2000
7.1
The Legend of Bagger Vance
as O.B. Keeler
2000
6.6
Boston Public
as Dr. Bernard Colbert
2000
7.6
Roswell
as Philip Evans
1999
7.7
The West Wing
as Ron Butterfield
1999
8.2
ATF
as ATF Asst. Director Ben Walker
1999
4.7
The Mod Squad
as Greene
1999
4.3
Dancer, Texas Pop. 81
as Mr. Lusk
1998
7.0
Virtual Obsession
1998
3.9
Standoff
as Cult Leader (Voice)
1998
5.6
Ally McBeal
as Dr. Colbert
1997
6.6
The Shining
as Daniel Edwards (uncredited)
1997
6.3
The Practice
as Judge Robert Temple
1997
7.6
Millennium
as County Prosecutor Calvin Smith
1996
7.7
The Sunchaser
as Agent Moreland
1996
6.2
JAG
as Commander Bradley
1995
7.3
Bushwhacked
as Jon Jordan
1995
5.3
Awake to Danger
as Detective Brickman
1995
6.0
Beyond Betrayal
as Ray Pasquerello
1994
6.3
ER
as Col. Ken Kilner
1994
7.8
Chicago Hope
1994
7.2
One West Waikiki
1994
7.4
Blind Justice
as Spencer Heymen
1994
5.1
Victim of Love: The Shannon Mohr Story
as Dick Britton
1993
7.2
Diagnosis: Murder
as Sheriff Buck O'Hara
1993
7.1
The X-Files
as Patrol Captain Van Gelder
1993
8.4
For Their Own Good
as Clark Thompson
1993
6.2
Lorenzo's Oil
as School Psychologist
1992
7.1
Jennifer Eight
as Serato
1992
6.1
The Gun in Betty Lou's Handbag
as Jergens
1992
5.1
An Unremarkable Life
as Michael
1989
0.0
Sea of Love
as Raymond Brown
1989
6.6
Ghost Story
as Churchill
1981
6.0