Michael O'Neill
Acting
Born: May 29, 1947 (age 79) · Montgomery, Alabama, USA
Highest Rated
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
Transformers
2007
Grey's Anatomy
2005
Dallas Buyers Club
2013
Prison Break
2005
The Mentalist
2008
Criminal Minds
2005
The X-Files
1993
Sons of Anarchy
2008
Fringe
2008
J. Edgar
2011
NCIS
2003
Traffic
2000
Photos (1)
Movies (42)
War of the Worlds
Secretary of Defense Walter Crystal
Traffic
Lawyer Rodman
Air
Joe Dean
Green Zone
Colonel Bethel
Bride Hard
Frank
Dallas Buyers Club
Richard Barkley
Secondhand Lions
Ralph
Dreamcatcher
Gen. Matheson
The Legend of Bagger Vance
O.B. Keeler
Sea of Love
Raymond Brown
Transformers
Tom Banacheck
J. Edgar
Senator McKellar
Jennifer Eight
Serato
Seabiscuit
Mr. Pollard
Nothing But the Truth
CIA Director
Lorenzo's Oil
School Psychologist
Ghost Story
Churchill
Around the Bend
Cowboy
The Gun in Betty Lou's Handbag
Jergens
Danger One
Beckwith
The Sunchaser
Agent Moreland
ATF
ATF Asst. Director Ben Walker
The Mod Squad
Greene
Clemency
Chaplain David Kendricks
Blind Justice
Spencer Heymen
Bushwhacked
Jon Jordan
Indivisible
Chaplain Rogers
For Their Own Good
Clark Thompson
Flying Lessons
Chief Dobbs
Victim of Love: The Shannon Mohr Story
Dick Britton
A Quiet Little Marriage
Bruce
Dancer, Texas Pop. 81
Mr. Lusk
American Crime
Sheriff Smyth
The Stand at Paxton County
Dell Connelly
Crazy
Ralph Christianson
The Grim Sleeper
Detective Simms
Virtual Obsession
1998
Standoff
Cult Leader (Voice)
Cold Call
Christian
Awake to Danger
Detective Brickman
An Unremarkable Life
Michael
Beyond Betrayal
Ray Pasquerello
TV Shows (60)
The Mentalist
Sheriff Nelson · 1 eps
NCIS
Riley McCallister · 3 eps
Grey's Anatomy
Gary Clark · 3 eps
Criminal Minds
Det. Yarbough · 1 eps
CSI: Miami
Jerry Blackburn · 1 eps
24
Richard Walsh · 1 eps
24
Richard Welsh · 1 eps
S.W.A.T.
Carl Luca · 3 eps
NCIS: Los Angeles
Ret. U.S. Army General Richard Collins · 1 eps
JAG
Commander Bradley · 1 eps
Prison Break
Herb Stanton · 1 eps
The X-Files
Patrol Captain Van Gelder · 1 eps
The West Wing
Ron Butterfield · 15 eps
Without a Trace
Thomas Shannon · 1 eps
Diagnosis: Murder
Sheriff Buck O'Hara · 1 eps
ER
Col. Ken Kilner · 1 eps
Sons of Anarchy
Anthony Franklin · 1 eps
The Practice
Judge Robert Temple · 1 eps
Fringe
Sheriff Velchik · 1 eps
This Is Us
Arlo · 1 eps
Boston Legal
Dr. Robert McLean · 1 eps
Numb3rs
Boyd Keene · 1 eps
Chicago Hope
Bill Wyzinski · 1 eps
Rizzoli & Isles
Jonathan McKnight · 1 eps
Scandal
Lonnie Mencken · 5 eps
Ghost Whisperer
Nolan · 1 eps
Crossing Jordan
Chris Benz · 1 eps
Tracker
Buck Avery · 1 eps
The Resident
Joshua Williams · 1 eps
Tom Clancy's Jack Ryan
Senator Mitchell Chapin · 5 eps
Army Wives
Reverend Bankerd · 2 eps
Boston Public
Dr. Bernard Colbert · 4 eps
The Unit
Ron Cheals · 6 eps
Fire Country
Harlan Denbo · 1 eps
Bates Motel
Nick Ford · 8 eps
Millennium
County Prosecutor Calvin Smith · 1 eps
Roswell
Philip Evans · 1 eps
Close to Home
Don Wheeler · 1 eps
Leverage
Judge Roy · 1 eps
Ally McBeal
Dr. Colbert · 1 eps
Shooter
Ray Brooks · 3 eps
Law & Order: LA
Jeb Monroe · 1 eps
The Glades
Trent Staley · 1 eps
FlashForward
CIA Director Keller · 1 eps
Outer Range
Judge Pettigrew · 2 eps
Commander in Chief
Congressman Wilcox · 2 eps
Extant
Alan Sparks · 13 eps
Rectify
Senator Roland Foulkes · 15 eps
Manhattan
Psychiatrist · 1 eps
LAX
Alonso Mathews · 1 eps
11.22.63
Arliss Price · 1 eps
Happy's Place
Jim Jackoway · 2 eps
The Romanoffs
Ron Hopkins · 1 eps
Happy Face
D.A. Craig Calloway · 5 eps
The Nine
Pete Burton · 3 eps
Messiah
Cameron Collier · 5 eps
One West Waikiki
1 eps
Vegas
Mayor Ted Bennett · 4 eps
The Shining
Daniel Edwards (uncredited) · 1 eps
Echoes
Victor McCleary · 7 eps
