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Michael O'Neill

Date of birth: 1947-05-29

Place of birth: Montgomery, Alabama, USA

Known for: Acting

Also known as: مایکل اونیل

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.

Movie Credits

Transformers
3.4

Transformers

2007-06-27

Young teenager Sam Witwicky becomes involved in the ancient struggle between two extraterrestrial fa

Green Zone
3.2

Green Zone

2010-03-11

During the U.S.-led occupation of Baghdad in 2003, Chief Warrant Officer Roy Miller and his team of

Dreamcatcher
2.8

Dreamcatcher

2003-03-21

Four boyhood pals perform a heroic act and are changed by the powers they gain in return. Years late

The Gun in Betty Lou's Handbag
2.5

The Gun in Betty Lou's Handbag

1992-08-21

A Southern librarian puts excitement in her life with a found murder weapon and a false confession.

Air
3.6

Air

2023-04-05

Discover the game-changing partnership between a then undiscovered Michael Jordan and Nike's fledgli

Around the Bend
3

Around the Bend

2004-10-08

A tale of four generations of men, all of whom have had their offspring at a young age: a great-gran

Blind Justice
2.5

Blind Justice

1994-06-25

Canaan, a mysterious gunfighter left nearly blind from Civil War combat, roams through Mexico with a

A Quiet Little Marriage
2.6

A Quiet Little Marriage

2008-10-18

A Quiet Little Marriage is the love story of Dax and Olive, who manage to find harmony even as they

Dancer, Texas Pop. 81
3.5

Dancer, Texas Pop. 81

1998-05-01

Four guys, best friends, have grown up together in DANCER, TEXAS POP. 81, a tiny town in West Texas.

War of the Worlds
2.1

War of the Worlds

2025-07-29

Will Radford is a top analyst for Homeland Security who tracks potential threats through a mass surv

Dallas Buyers Club
4

Dallas Buyers Club

2013-11-01

Loosely based on the true-life tale of Ron Woodroof, a drug-taking, women-loving, homophobic man who

For Their Own Good
3.1

For Their Own Good

1993-04-05

A factory worker gets an ultimatum from her employer that she agree to be sterilized or be fired.

An Unremarkable Life
0

An Unremarkable Life

1989-10-12

The close bond between two elderly sisters is threatened when one of them begins to have romantic fe

Bride Hard
2.8

Bride Hard

2025-06-19

Sam is a secret agent whose toughest mission to date is pleasing her bride-to-be best friend at a la

Bushwhacked
2.6

Bushwhacked

1995-08-04

A inept courier realises he has been used by criminals to deliver money. On the run from both the cr

The Grim Sleeper
2.5

The Grim Sleeper

2014-03-15

Journalist Christine Pelisek helps law enforcement investigate the alleged serial killer known as th

Virtual Obsession
1.9

Virtual Obsession

1998-02-01

If you were a brilliant young scientist diagnosed with only months to live, what choices would you m

The Legend of Bagger Vance
3.3

The Legend of Bagger Vance

2000-11-02

World War I has left golfer Rannulph Junuh a poker-playing alcoholic, his perfect swing gone. Now, h

Traffic
3.5

Traffic

2000-12-27

An exploration of the United States of America's war on drugs from multiple perspectives. For the ne

Nothing But the Truth
3.5

Nothing But the Truth

2008-12-19

When reporter Rachel Armstrong writes a story that reveals the identity of a covert CIA operative, t

ATF
2.4

ATF

1999-09-06

In the wake of the tragic events at Waco, Texas where an armed conflict with armed militiamen broke

Crazy
2.7

Crazy

2008-03-02

Crazy is the story of a legendary guitar player who emerged from Nashville in the 1950s. Blessed wit

Victim of Love: The Shannon Mohr Story
3.6

Victim of Love: The Shannon Mohr Story

1993-11-09

When a woman dies in a supposed accident, her parents suspect their son-in-law of foul play. When th

Secondhand Lions
3.6

Secondhand Lions

2003-09-19

The comedic adventures of an introverted boy left on the doorstep of a pair of reluctant, eccentric

Indivisible
3.4

Indivisible

2018-10-26

Upon returning from serving in the U.S. Army, Chaplain Darren Turner faces a crisis that shatters hi

The Sunchaser
3.1

The Sunchaser

1996-05-29

A young half-Navajo convict dying of cancer forces a yuppie doctor to drive him to a magic healing l

Jennifer Eight
3

Jennifer Eight

1992-11-06

John Berlin, a big-city cop from LA moves to a small-town police force and immediately finds himself

Danger One
3

Danger One

2018-09-14

While transporting a dying man to the hospital, two paramedics find a million dollars in cash sewn i

Ghost Story
3

Ghost Story

1981-12-18

Four successful elderly gentlemen, members of the Chowder Society, share a gruesome, 50-year-old sec

Sea of Love
3.3

Sea of Love

1989-09-15

Seen-it-all New York detective Frank Keller is unsettled - he has done twenty years on the force and

Clemency
3.1

Clemency

2019-12-27

Years of carrying out death row executions have taken a toll on prison warden Bernadine Williams. As

Lorenzo's Oil
3.5

Lorenzo's Oil

1992-12-30

Augusto and Michaela Odone are dealt a cruel blow by fate when their five-year-old son Lorenzo is di

Beyond Betrayal
3.1

Beyond Betrayal

1994-10-11

Joanne is married to Bradley, a cop who abuses her. One day she decides to run away and meets Sam, w

The Stand at Paxton County
3

The Stand at Paxton County

2020-05-02

A military veteran comes home to find her father harassed by a sheriff intent on confiscating the li

J. Edgar
3.1

J. Edgar

2011-11-09

As the face of law enforcement in the United States for almost 50 years, J. Edgar Hoover was feared

American Crime
1.8

American Crime

2004-04-06

A news team hunts for a serial killer who stalks victims via videotape and then records the ghastly

Seabiscuit
3.5

Seabiscuit

2003-07-22

True story of the undersized Depression-era racehorse whose victories lifted not only the spirits of

The Mod Squad
2.2

The Mod Squad

1999-03-26

Three youthful delinquents escape conviction for their crimes by teaming with the LAPD.

Cold Call
0

Cold Call

2021-02-04

Christian, a brilliant businessman, deal-maker, and self-proclaimed master-of-the-universe, receives

Awake to Danger
3

Awake to Danger

1995-03-12

Recently awakened from a coma, a traumatized adolescent girl fights to remember the circumstances su

Standoff
2.8

Standoff

1998-01-11

The FBI and Texas police make ready to storm the headquarters of a heavily armed sect of religious f

Flying Lessons
2.8

Flying Lessons

2010-02-04

With her life at a crossroads, 25 year old Sophie Conway returns home to the small town she always w