Image of Michael O'Neill

Michael O'Neill

​From Wikipedia, the free encyclopedia. Michael O'Neill 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.


Read bio at tmdb | Read bio at Wikipedia
Born:
May 29, 1947 In Montgomery, Alabama, United States
Movie/TV Credits:
55
First Appeared:
In the movie Ghost Story 1981-12-18
Latest Project:
Movie The Stand at Paxton County 2020-05-02
Known For
Poster of Crazy
Poster of The Nine
Poster of Around the Bend
Poster of Sea of Love

Michael O'Neill Movies Filmography

Movie
The Stand at Paxton County
Dell Connelly 2020-05-02
Movie
Clemency
Chaplain David Kendricks 2019-12-27
Movie
Indivisible
Chaplain Rogers 2018-10-26
Movie
Danger One
Beckwith 2018-09-14
Series
Tom Clancy's Jack Ryan
Senator Mitchell Chapin 2018-08-30
Series
The Resident
Joshua Williams 2018-01-21
Series
S.W.A.T.
Carl Luca 2017-11-02
Series
11.22.63
Mr. Price 2016-02-15
Series
Extant
Alan Sparks 2014-07-09
Movie
The Grim Sleeper
Detective Simms 2014-03-15
Movie
Dallas Buyers Club
Richard Barkley 2013-11-17
Series
Rectify
Senator Roland Foulkes 2013-04-22
Series
Bates Motel
Nick Ford 2013-03-18
Series
Scandal
Lonnie Mencken 2012-04-05
Movie
J. Edgar
Senator McKellar 2011-11-09
Series
Rizzoli & Isles
Jonathan McKnight 2010-07-12
Series
The Glades
Trent Staley 2010-07-11
Movie
Green Zone
Colonel Bethel 2010-03-11
Series
FlashForward
CIA Director Keller 2009-09-24
Series
Leverage
Judge Roy 2008-12-07
Movie
A Quiet Little Marriage
Bruce 2008-11-07
Series
The Mentalist
Sheriff Nelson 2008-09-23
Series
Fringe
Unknown 2008-09-09
Movie
Crazy
Ralph Christianson 2008-03-02
Movie
Transformers
Tom Banacheck 2007-06-27
Series
The Nine
Pete Burton 2006-10-04
Series
Grey's Anatomy
Unknown 2005-03-27
Series
Prison Break
Herb Stanton 2005-08-29
Series
Criminal Minds
Det. Yarbough 2005-09-22
Movie
American Crime
Sheriff Smyth 2004-04-06
Movie
Around the Bend
Cowboy 2004-10-08
Movie
Secondhand Lions
Ralph 2003-09-19
Movie
Seabiscuit
Mr. Pollard 2003-07-22
Movie
Dreamcatcher
General Matheson 2003-03-21
Series
Without a Trace
Thomas Shannon 2002-09-26
Series
24
Richard Walsh 2001-11-06
Movie
The Legend of Bagger Vance
O.B. Keeler 2000-11-02
Movie
Traffic
Lawyer Rodman 2000-03-23
Movie
ATF
Asst. A.T.F. Director Ben Walker 1999-09-06
Movie
The Mod Squad
Greene 1999-03-26
Series
The West Wing
Unknown 1999-09-22
Series
Roswell
Unknown 1999-10-06
Movie
Dancer, Texas Pop. 81
Mr. Lusk 1998-05-01
Movie
Virtual Obsession
1998-02-01
Movie
The Sunchaser
Agent Moreland 1996-05-29
Series
Blue Murder
Bruce Lyons 1995-09-14
Movie
Beyond Betrayal
Ray Pasquerello 1994-10-11
Series
Chicago Hope
Unknown 1994-09-18
Movie
Victim of Love: The Shannon Mohr Story
Dick Britton 1993-11-09
Series
The X-Files
Unknown 1993-09-10
Movie
Lorenzo's Oil
School Psychologist 1992-12-30
Movie
Jennifer Eight
Serato 1992-11-06
Movie
Sea of Love
Raymond Brown 1989-09-15
Series
Bodyline
Viv Richardson 1984-07-16
Movie
Ghost Story
Churchill 1981-12-18

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