Michael O'Neill

Personal Info

Know For

Acting

Gender

Male

Birthday

1947-05-29 (78 years old)

Place of Birth

Montgomery, Alabama, USA

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 whil...

Acting

2007

Transformers

as Tom Banacheck

2010

Green Zone

as Colonel Bethel

2003

Dreamcatcher

as General Matheson

2023

Air

as Joe Dean

2004

1994

Blind Justice

as Spencer Heymen

1998

2013

Dallas Buyers Club

as Richard Barkley

1993

For Their Own Good

as Clark Thompson

1989

2025

Bride Hard

as Frank

1995

Bushwhacked

as Jon Jordan

2014

The Grim Sleeper

as Detective Simms

2000

2000

Traffic

as Lawyer Rodman

2008

Nothing But the Truth

as CIA Director

1999

ATF

as ATF Asst. Director Ben Walker

2008

Crazy

as Ralph Christianson

2003

2018

Indivisible

as Chaplain Rogers

1996

The Sunchaser

as Agent Moreland

1992

2018

Danger One

as Beckwith

1981

Ghost Story

as Churchill

1989

Sea of Love

as Raymond Brown

2019

Clemency

as Chaplain David Kendricks

1992

Lorenzo's Oil

as School Psychologist

1994

Beyond Betrayal

as Ray Pasquerello

2020

2011

J. Edgar

as Senator McKellar

2004

American Crime

as Sheriff Smyth

2003

Seabiscuit

as Mr. Pollard

1999

The Mod Squad

as Greene

2021

Cold Call

as Christian

1995

Awake to Danger

as Detective Brickman

1998

Standoff

as Cult Leader (Voice)

Production

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