Biography

​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.

​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.

Personal Info

Known For Acting

Gender Male

Known Credits 41

Birthday -

Place of Birth -

Official Site -

Also Known As

  • -

Acting TV ShowsMovies

2018 Indivisible as Chaplain Rogers
2018 Danger One as Beckwith
2018 The Resident(1 episode) as Joshua Williams
2016 11.22.63(8 episodes) as Mr. Price
2016 11.22.63(1 episode) as Arliss Price
2014 Extant(13 episodes) as Alan Sparks
2014 The Grim Sleeper as Detective Simms
2013 Dallas Buyers Club as Richard Barkley
2013 Rectify(15 episodes) as Senator Roland Foulkes
2013 Bates Motel(5 episodes) as Nick Ford
2012 Scandal(2 episodes) as Lonnie Mencken
2010 Rizzoli & Isles(1 episode) as Jonathan McKnight
2010 The Glades(1 episode) as Trent Staley
2010 Green Zone as Colonel Bethel
2009 FlashForward(1 episode) as CIA Director Keller
2008 A Quiet Little Marriage as Bruce
2008 The Mentalist(1 episode) as Sheriff Nelson
2008 Fringe(1 episode)
2008 Crazy as Ralph Christianson
2007 Transformers as Tom Banacheck
2006 The Nine(3 episodes) as Pete Burton
2005 Prison Break(3 episodes)
2005 Grey's Anatomy(1 episode)
2004 Around the Bend as Cowboy
2003 Secondhand Lions as Ralph
2003 Dreamcatcher as General Matheson
2001 24(1 episode) as Richard Walsh
2001 24(1 episode) as Richard Welsh
2000 Traffic as Lawyer Rodman
2000 Traffic as Lawery Rodman
2000 The Legend of Bagger Vance as O.B. Keeler
1999 Roswell(1 episode)
1999 The West Wing(16 episodes)
1999 ATF as Asst. A.T.F. Director Ben Walker
1998 Dancer, Texas Pop. 81 as Mr. Lusk
1998 Virtual Obsession
1996 The Sunchaser as Agent Moreland
1994 Chicago Hope(1 episode)
1993 Victim of Love: The Shannon Mohr Story as Dick Britton
1993 The X-Files(1 episode)
1993 For Their Own Good as Clark Thompson
1992 Jennifer Eight
1989 An Unremarkable Life as Michael

Production

2017 On Yoga the Architecture of PeaceProducer

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