Michael O'Neill Filmography
- Actor (78 credits)
- S.W.A.T. (2017) Carl
- Indivisible (2017) Chaplain Rogers
- Danger One (2017) Beckwith
- 11.22.63 (2016) Arliss Price
- Battle Creek (2015) Councilman Pritchett
- Silent War (2015) Sergeant Major Smith
- Extant (2014) Alan Sparks
- Manhattan (2014) Psychiatrist
- The Grim Sleeper (2014) Detective Simms
- Rectify (2013) Senator Roland Foulkes
- Bates Motel (2013) Nick Ford
- Dallas Buyers Club (2013) Richard Barkley
- Vegas (2012) Mayor Ted Bennett
- Necessary Roughness (2011) Hank Griffin
- Prime Suspect (2011) Commander Wells
- J. Edgar (2011) Senator McKellar
- Flying Lessons (2010) Chief Dobbs
- Law & Order: Los Angeles (2010) Jeb Monroe
- Miami Medical (2010) Dr. Bruce Kaye
- The Glades (2010) Trent Staley
- Flashforward (2009) CIA Director Keller
- Green Zone (2009) Colonel Bethel
- My Own Worst Enemy (2008) Alexander DeSantos
- Leverage (2008) Judge Roy
- Crazy (2008) Ralph Christianson, not listed in credits
- A Quiet Little Marriage (2008) Bruce
- Nothing But the Truth (2008) CIA Director
- K-Ville (2007) Father Dennehy
- Transformers (2007)
- Women's Murder Club (2007) FBI Agent Ted Thorne
- 3 lbs. (2006) James Wills
- The Nine (2006) Pete Burton
- Lincoln Heights (2006) Captain
- The Unit (2006) Ron Cheals
- Commander in Chief (2005) Congressman Wilcox
- Plainsong (2004) Doctor
- American Crime (2004) Sheriff Smyth
- LAX (2004) Alonso Mathews
- Around the Bend (2004) Cowboy
- NCIS: Naval Criminal Investigative Service (2003) Former NCIS Special Agent Riley McCallister
- Carnivàle (2003) Sheriff Lyle Donovan, not listed in credits
- Secondhand Lions (2003) Ralph
- Dreamcatcher (2003) Gen. Matheson
- Seabiscuit (2003) Mr. Pollard
- Presidio Med (2002)
- The Board Room (2002) Walters
- Traffic (2000) Lawyer Rodman
- Boston Public (2000) Dr. Bernard Colbert
- The Legend of Bagger Vance (2000) O.B. Keeler
- ATF (1999) Asst. A.T.F. Director Ben Walker
- Roswell (1999) Phillip Evans
- The West Wing (1999) Secret Service Agent Ron Butterfield
- The Mod Squad (1999) Greene
- Standoff (1998) Cult Leader, voice acting
- Host (1998)
- Dancer, Texas Pop. 81 (1998) Mr. Lusk
- The Shining (1997) Dr. Daniel Edwards
- The Pretender (1996) Captain Harrigan
- The Sunchaser (1996) Agent Moreland
- The Cape (1996) Keith Mason
- Norma Jean & Marilyn (1996) Mr. Kimmel
- Awake to Danger (1995) Detective Brickman
- Bushwhacked (1995) Jon Jordan
- On Trial (1994)
- Blind Justice (1994) Spencer Heyman
- One West Waikiki (1994)
- Beyond Betrayal (1994) Ray Pasquerello
- For Their Own Good (1993) Clark Thompson
- Victim of Love: The Shannon Mohr Story (1993) Dick Britton
- Lorenzo's Oil (1992) School Psychologist
- Jennifer Eight (1992) Serato
- The Gun in Betty Lou's Handbag (1992) Jergens
- H.E.L.P. (1990) Cabot
- Sea of Love (1989) Raymond Brown
- An Unremarkable Life (1989) Michael
- Ghost Story (1981) Churchill
- One Heart Ross Graham
- Clemency Chaplain Kendricks
