Michael O'Neill
Actor · Born 1947-05-29
Acting 101
War of the Worlds
2025 · Secretary of Defense Walter Crystal
Bride Hard
2025 · Frank
Happy Face
2025 · D.A. Craig Calloway
Happy's Place
2024 · Jim Jackoway
Tracker
2024 · Buck Avery
Air
2023 · Joe Dean
Fire Country
2022 · Harlan Denbo
Echoes
2022 · Victor McCleary
Outer Range
2022 · Judge Pettigrew
Cold Call
2021 · Christian
The Stand at Paxton County
2020 · Dell Connelly
Messiah
2020 · Cameron Collier
Clemency
2019 · Chaplain David Kendricks
Indivisible
2018 · Chaplain Rogers
The Romanoffs
2018 · Ron Hopkins
Danger One
2018 · Beckwith
Tom Clancy's Jack Ryan
2018 · Senator Mitchell Chapin
The Resident
2018 · Joshua Williams
S.W.A.T.
2017 · Carl Luca
Shooter
2016 · Ray Brooks
This Is Us
2016 · Arlo
11.22.63
2016 · Arliss Price
Manhattan
2014 · Psychiatrist
Extant
2014 · Alan Sparks
The Grim Sleeper
2014 · Detective Simms
Dallas Buyers Club
2013 · Richard Barkley
Rectify
2013 · Senator Roland Foulkes
Bates Motel
2013 · Nick Ford
Vegas
2012 · Mayor Ted Bennett
Scandal
2012 · Lonnie Mencken
J. Edgar
2011 · Senator McKellar
Law & Order: LA
2010 · Jeb Monroe
Rizzoli & Isles
2010 · Jonathan McKnight
The Glades
2010 · Trent Staley
Green Zone
2010 · Colonel Bethel
Flying Lessons
2010 · Chief Dobbs
FlashForward
2009 · CIA Director Keller
NCIS: Los Angeles
2009 · Ret. U.S. Army General Richard Collins
Nothing but the Truth
2008 · CIA Director
Leverage
2008 · Judge Roy
A Quiet Little Marriage
2008 · Bruce
The Mentalist
2008 · Sheriff Nelson
Fringe
2008 · Sheriff Velchik
Sons of Anarchy
2008 · Anthony Franklin
Crazy
2008 · Ralph Christianson
Transformers
2007 · Tom Banacheck
Army Wives
2007 · Reverend Bankerd
The Nine
2006 · Pete Burton
The Unit
2006 · Ron Cheals
Commander in Chief
2005 · Congressman Wilcox
Ghost Whisperer
2005 · Nolan
Criminal Minds
2005 · Det. Yarbough
Close to Home
2005 · Don Wheeler
Prison Break
2005 · Herb Stanton
Grey's Anatomy
2005 · Gary Clark
Numb3rs
2005 · Boyd Keene
Around the Bend
2004 · Cowboy
Boston Legal
2004 · Dr. Robert McLean
LAX
2004 · Alonso Mathews
American Crime
2004 · Sheriff Smyth
NCIS
2003 · Riley McCallister
Secondhand Lions
2003 · Ralph
Seabiscuit
2003 · Mr. Pollard
Dreamcatcher
2003 · Gen. Matheson
Without a Trace
2002 · Thomas Shannon
CSI: Miami
2002 · Jerry Blackburn
24
2001 · Richard Walsh
Crossing Jordan
2001 · Chris Benz
Traffic
2000 · Lawyer Rodman
The Legend of Bagger Vance
2000 · O.B. Keeler
Boston Public
2000 · Dr. Bernard Colbert
Roswell
1999 · Philip Evans
The West Wing
1999 · Ron Butterfield
ATF
1999 · ATF Asst. Director Ben Walker
The Mod Squad
1999 · Greene
Dancer, Texas Pop. 81
1998 · Mr. Lusk
Virtual Obsession
1998
Standoff
1998 · Cult Leader (Voice)
Ally McBeal
1997 · Dr. Colbert
The Shining
1997 · Daniel Edwards (uncredited)
The Practice
1997 · Judge Robert Temple
Millennium
1996 · County Prosecutor Calvin Smith
The Sunchaser
1996 · Agent Moreland
JAG
1995 · Commander Bradley
Bushwhacked
1995 · Jon Jordan
Awake to Danger
1995 · Detective Brickman
Beyond Betrayal
1994 · Ray Pasquerello
ER
1994 · Col. Ken Kilner
Chicago Hope
1994 · Bill Wyzinski
One West Waikiki
1994
Blind Justice
1994 · Spencer Heymen
Victim of Love: The Shannon Mohr Story
1993 · Dick Britton
Diagnosis: Murder
1993 · Sheriff Buck O'Hara
The X-Files
1993 · Patrol Captain Van Gelder
For Their Own Good
1993 · Clark Thompson
Lorenzo's Oil
1992 · School Psychologist
Jennifer Eight
1992 · Serato
The Gun in Betty Lou's Handbag
1992 · Jergens
An Unremarkable Life
1989 · Michael
Sea of Love
1989 · Raymond Brown
Ghost Story
1981 · Churchill