Home
Movies
TV Shows
Photos
Now Streaming
Movies Streaming Now
TV Shows Streaming Now
In Theaters
Coming Soon
Sign In

Home
Movies
TV Shows
Photos
More
Now Streaming Movies Streaming Now TV Shows Streaming Now In Theaters Coming Soon Celebrities
Sign In

Home
People
Michael O'Neill

Michael O'Neill

Actor

Born May 29, 1947 in Montgomery, Alabama, USA

Instagram Facebook

Movies & Shows

Discover Michael O'Neill content online

Loading streaming options...

Finding the best places to watch

No streaming options available

Check back later for new content

No matches found for your search

Try different keywords

Content availability varies by region and time. Links open in new window.

Share with a friend

Quick Copy Link

Share on Social Media

Popular

Professional

More Options

Photos Profile Poster Backdrop Stills Logo Event Publicity Product Behind the Scenes Photos Other Photos Unknown Photos Videos Trailers Teasers Clips Behind the Scenes Videos Bloopers Featurette Credits Other Videos Awards

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.

Less

More

Michael O'Neill Photos

Michael O'Neill Videos

Official Trailer

The Stand at Paxton County | Official Trailer [HD] | On Netflix May 2

Filmography

Actor

137

Type

Year

Bride Hard Poster

Bride Hard Feature Film2025Frank

Happy Face Poster

Happy Face TV Series2025D.A. Craig Calloway

War of the Worlds Poster

War of the Worlds Feature Film2025Secretary of Defense Walter Crystal

Happy's Place Poster

Happy's Place TV Series2024Jim Jackoway

Air Feature Film2023Joe Dean

Bound Short Film2022Jason Koss

Echoes Mini-Series2022Victor McCleary

Fire Country Poster

Fire Country TV Series2022Harlan Denbo

Cold Call Poster

Cold Call Short Film2020Christian

Council of Dads Poster

Council of Dads TV Series2020Larry Mills

Messiah TV Series2020Cameron Collier

The Stand at Paxton County Poster

The Stand at Paxton County Feature Film2020Dell Connelly

Clemency Poster

Clemency Feature Film2019Chaplain David Kendricks

Danger One Poster

Danger One Feature Film2018Beckwith

Indivisible Poster

Indivisible Feature Film2018Chaplain Rogers

The Resident Poster

The Resident TV Series2018Joshua Williams

The Romanoffs Poster

The Romanoffs TV Series2018Ron Hopkins

Tom Clancy's Jack Ryan Poster

Tom Clancy's Jack Ryan TV Series2018Senator Mitchell Chapin

Grey's Anatomy: Post-Op Poster

Grey's Anatomy: Post-Op Mini-Series2017Gary Clark

S.W.A.T. Poster

S.W.A.T. TV Series2017Carl

11.22.63 Poster

11.22.63 Mini-Series2016Arliss Price

Shooter TV Series2016Ray Brooks

This Is Us Poster

This Is Us TV Series2016Arlo

Battle Creek Poster

Battle Creek TV Series2015Councilman Pritchett

Silent War Short Film2015Sergeant Major Smith

Extant TV Series2014Alan Sparks

Manhattan Poster

Manhattan TV Series2014Psychiatrist

The Grim Sleeper Poster

The Grim Sleeper TV Movie2014Detective Simms

Bates Motel Poster

Bates Motel TV Series2013Nick Ford

Dallas Buyers Club Poster

Dallas Buyers Club Feature Film2013Richard Barkley

Rectify TV Series2013Senator Roland Foulkes

Scandal TV Series2012Lonnie Mencken

Vegas TV Series2012Mayor Ted Bennett

J. Edgar Poster

J. Edgar Feature Film2011Senator McKellar

Necessary Roughness Poster

Necessary Roughness TV Series2011Hank Griffin

Prime Suspect Poster

Prime Suspect TV Series2011Commander Wells

Flying Lessons Poster

Flying Lessons Feature Film2010Chief Dobbs

Green Zone Poster

Green Zone Feature Film2010Colonel Bethel

Law & Order: LA Poster

Law & Order: LA TV Series2010Jeb Monroe

Miami Medical Poster

Miami Medical TV Series2010Dr. Bruce Kaye

Rizzoli & Isles Poster

Rizzoli & Isles TV Series2010Jonathan McKnight

The Glades Poster

The Glades TV Series2010Trent Staley

Flashforward Poster

Flashforward TV Series2009CIA Director Keller

Grey's Anatomy: The Webisodes Poster

Grey's Anatomy: The Webisodes TV Series2009Gary Clark

NCIS: Los Angeles Poster

NCIS: Los Angeles TV Series2009Ret. U.S. Army General Richard Collins

A Quiet Little Marriage Poster

A Quiet Little Marriage Feature Film2008Bruce

Crazy Feature Film2008Ralph Christianson

Fringe TV Series2008Sheriff Velchik

Leverage Poster

Leverage TV Series2008Judge Roy

My Own Worst Enemy Poster

My Own Worst Enemy TV Series2008Alexander DeSantos

Nothing But the Truth Poster

Nothing But the Truth Feature Film2008CIA Director

Sons of Anarchy Poster

Sons of Anarchy TV Series2008Anthony Franklin

The Board Room Poster

The Board Room Feature Film2008Walters

The Mentalist Poster

The Mentalist TV Series2008Sheriff Nelson

Army Wives Poster

Army Wives TV Series2007Reverend Bankerd

K-Ville TV Series2007Father Dennehy

Lincoln Heights Poster

Lincoln Heights TV Series2007Captain

Transformers Poster

Transformers Feature Film2007Tom Banacheck

Women's Murder Club Poster

Women's Murder Club TV Series2007FBI Agent Ted Thorne

3 lbs. TV Series2006James Wills

Laws of Chance TV Series2006Wyatt

The Nine Poster

The Nine TV Series2006Pete Burton

The Unit Poster

The Unit TV Series2006Ron Cheals

Close to Home Poster

Close to Home TV Series2005Don Wheeler

Commander in Chief Poster

Commander in Chief TV Series2005Congressman Wilcox

Criminal Minds Poster

Criminal Minds TV Series2005Det. Yarbough

Ghost Whisperer Poster

Ghost Whisperer TV Series2005Nolan

Grey's Anatomy Poster

Grey's Anatomy TV Series2005Gary Clark

Numb3rs TV Series2005Boyd Keene

Prison Break Poster

Prison Break TV Series2005Herb Stanton

American Crime Poster

American Crime Video2004Sheriff Smyth

Around the Bend Poster

Around the Bend Feature Film2004Cowboy

Boston Legal Poster

Boston Legal TV Series2004Dr. Robert McLean

LAX TV Series2004Alonso Mathews

Plainsong Poster

Plainsong TV Movie2004Doctor

Carnivàle Poster

Carnivàle TV Series2003Sheriff Lyle Donovan

Cold Case Poster

Cold Case TV Series2003Warren Cousins

Dreamcatcher Poster

Dreamcatcher Feature Film2003Gen. Matheson

NCIS TV Series2003Former NCIS Special Agent Riley McCallister

Seabiscuit Poster

Seabiscuit Feature Film2003Mr. Pollard

Secondhand Lions Poster

Secondhand Lions Feature Film2003Ralph

CSI: Miami Poster

CSI: Miami TV Series2002Jerry Blackburn

Presidio Med Poster

Presidio Med TV Series20021 episode, 2003

Rooftop Kisses Poster

Rooftop Kisses Short Film2002Dad

Without a Trace Poster

Without a Trace TV Series2002Thomas Shannon

24 TV Series2001Richard Walsh

Crossing Jordan Poster

Crossing Jordan TV Series2001Chris Benz

Boston Public Poster

Boston Public TV Series2000Dr. Bernard Colbert

The Legend of Bagger Vance Poster

The Legend of Bagger Vance Feature Film2000O.B. Keeler

Traffic Feature Film2000Lawyer Rodman

ATF TV Movie1999Asst. A.T.F. Director Ben Walker

Judging Amy Poster

Judging Amy TV Series1999D.A. Dave Sherman

Roswell TV Series1999Philip Evans

The Mod Squad Poster

The Mod Squad Feature Film1999Greene

The West Wing Poster

The West Wing TV Series1999Secret Service Agent Ron Butterfield

Dancer, Texas Pop. 81 Poster

Dancer, Texas Pop. 81 Feature Film1998Mr. Lusk

Host TV Movie1998

Mercy Point Poster

Mercy Point TV Series19981 episode, 1998

Standoff Poster

Standoff Feature Film1998Cult Leader

Ally McBeal Poster

Ally McBeal TV Series1997Dr. Colbert

Orleans TV Series19971 episode, 1997

SAG Foundation Conversations Poster

SAG Foundation Conversations TV Series1997Self

The Practice Poster

The Practice TV Series1997Judge Robert Temple

The Shining Poster

The Shining Mini-Series1997Dr. Daniel Edwards

Millennium Poster

Millennium TV Series1996County Prosecutor Calvin Smith

Norma Jean & Marilyn Poster

Norma Jean & Marilyn TV Movie1996Mr. Kimmel

Promised Land Poster

Promised Land TV Series1996Ranger Dan McKean

The Cape Poster

The Cape TV Series1996Keith Mason

The Lazarus Man Poster

The Lazarus Man TV Series1996Parker Dawson

The Pretender Poster

The Pretender TV Series1996Captain Harrigan

The Sunchaser Poster

The Sunchaser Feature Film1996Agent Moreland

Awake to Danger Poster

Awake to Danger TV Movie1995Detective Brickman

Bushwhacked Poster

Bushwhacked Feature Film1995Jon Jordan

JAG TV Series1995Commander Bradley

Beyond Betrayal Poster

Beyond Betrayal TV Movie1994Ray Pasquerello

Blind Justice Poster

Blind Justice TV Movie1994Spencer Heyman

Chicago Hope Poster

Chicago Hope TV Series1994Bill Wyzinski

ER TV Series1994Col. Ken Kilner

On Trial Documentary1994

One West Waikiki Poster

One West Waikiki TV Series1994Treasury Agent Wells

Diagnosis Murder Poster

Diagnosis Murder TV Series1993Sheriff Buck O'Hara

For Their Own Good Poster

For Their Own Good TV Movie1993Clark Thompson

NYPD Blue Poster

NYPD Blue TV Series1993Capt. Chuck Dowling

The X-Files Poster

The X-Files TV Series1993Patrol Captain Van Gelder

Victim of Love: The Shannon Mohr Story Poster

Victim of Love: The Shannon Mohr Story TV Movie1993Dick Britton

Jennifer 8 Poster

Jennifer 8 Feature Film1992Det. Sgt. Angelo Serato

Lorenzo's Oil Poster

Lorenzo's Oil Feature Film1992School Psychologist

Picket Fences Poster

Picket Fences TV Series1992Juror

The Gun in Betty Lou's Handbag Poster

The Gun in Betty Lou's Handbag Feature Film1992Jergens

H.E.L.P. Poster

H.E.L.P. TV Series1990Cabot

An Unremarkable Life Poster

An Unremarkable Life Feature Film1989Michael

Sea of Love Poster

Sea of Love Feature Film1989Raymond Brown

L.A. Law Poster

L.A. Law TV Series1986Robert Moran

Ghost Story Poster

Ghost Story Feature Film1981Churchill

Quincy M.E. Poster

Quincy M.E. TV Series1976First mate

Days of Our Lives Poster

Days of Our Lives TV Series1965Father Jansen

One Heart Poster

One Heart Feature FilmRoss Graham

Featured Celebrity Photos

Chase Sui Wonders Shines at New York Premiere of 'I Want Your Sex

Hannah Einbinder Shines at Teenage Sex and Death Premiere in Los Angeles

Dakota Johnson Stars as Marilyn Monroe in Upcoming Short Film Set for July 2026 Release

Hayes Warner Attends FX's The Shards London Screening

Madison Beer Stops by Nail Salon Ahead of Los Angeles Meeting on July 30, 2026

Emily Feld Features Stylish Looks in That's So Fetch August 2026 Edition

Kathryn Newton Attends "The Devil's Mouth" Beach Party in Malibu

Hayes Warner Shines at FX's The Shards Premiere in New York

Aisling Sharkey Shines at Ted Lasso Season 4 Premiere in Los Angeles

Jennifer Lopez Spotted Exploring the Streets of Rome

Florence Pugh Shines at London Premiere of "Spider-Man: Brand New Day" July 29, 2026

Zendaya Shines at the "Spider-Man: Brand New Day" UK Premiere in London

Selena Gomez Enjoys Yacht Day in a Bikini on the French Riviera

Lana Condor Attends "The Devil's Mouth" Screening Event in Culver City

Lindsey Pelas Shines at Ted Lasso Season 4 Premiere in Los Angeles

Anna Sitar Shines at Spider-Man: Brand New Day Premiere in Los Angeles

Anna McClelland Shines at Spider-Man: Brand New Day Premiere in Los Angeles

Chloe Veitch Shines at Los Angeles Premiere of Ted Lasso Season 4

Kaia Gerber Attends Press Junket for "The Shards" in New York

Mary Beth Barone Appears on Live with Kelly & Mark in New York

Chase Sui Wonders Shines at "I Want Your Sex" Los Angeles Premiere

Karlie Kloss Spotted on Book Tour in New York City

Katherine McNamara Shines at "Ted Lasso" Season 4 Premiere in Los Angeles

Karlie Kloss Spotted Out and About in New York City

Evan Rachel Wood Shines at FX's "The Shards" World Premiere in New York

Lauren Betts Shines at AT&T WNBA All-Star Weekend in Chicago

Kira Kosarin Shines at Los Angeles Premiere of Ted Lasso Season 4

Kim Kardashian Spotted Leaving UpDate Pop-Up at Saint Sernin on July 26, 2026

Sadie Sink Shines at "Spider-Man: Brand New Day" World Premiere in Hollywood

Kaia Gerber Shines at The Shards World Premiere in New York

Oops!

Sign up for free

Company

About Us
Contact Us
Send feedback

Contribute

Add Movie
Add TV Show
Contribution Guide

Legal

Terms
Privacy

© 2026 Gawby.com

Send feedback to Gawby.com

Describe your issue or suggestion