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