John O'Leary Filmography
- Actor (71 credits)
- Baskets (2016) Edwin
- Idiotsitter (2014)
- Getting On (2013) Mr. Wymann
- Prime Suspect (2011) Malachi
- Saving Grace (2007) Victor Eli
- In Case of Emergency (2007) Priest
- Comedy Central Thanksgiving Wiikend: Thanksgiving Island (2006) Grandpa Bixby
- Fossil (2004) Albert Tisdale
- I'm with Her (2003) Gabe
- Life with Bonnie (2002) Older gentleman
- Kiss the Bride (2002) Father Gregory
- The Gene Pool (2001) Maxwell
- Soccer Dog: The Movie (1999) Mr. Kremp
- My Fellow Americans (1996) Ben, Caretaker
- The Jeff Foxworthy Show (1995) Reverend
- Guardian Angel (1994) Clayton
- Dr. Quinn, Medicine Woman (1993) Judge
- Distant Cousins (1993) Mr. Williams
- Majority Rule (1992) Farmer Freyberger
- Morton & Hayes (1991) Minister
- Waxwork II: Lost in Time (1991) Herr Vogel
- The Haunted (1991) Father Larson
- For the Boys (1991) T.V. Censor, New York
- The Haunting of Morella (1990) Quintis
- A Family for Joe (1990) Pangborn
- Anything But Love (1989) Father Madigan
- Stepfather II (1989) Sam Watkins
- A Time of Destiny (1988) Father Basil
- The Wonder Years (1988) Jeweler
- Monsters (1988) Mr. Innes
- Dear John (1988) Minister
- Retreads (1988)
- Sister Margaret and the Saturday Night Ladies (1987) Father Karsey
- The Bronx Zoo (1987) Mr. Larkspur
- The Law and Harry McGraw (1987) Mr. Fred W. Purdy
- My Chauffeur (1986) Giles
- Stewardess School (1986) Older Man
- Inside Out (1986) Arthur Harris
- Sins of the Father (1985) Bodell
- The Last Starfighter (1984) Rylan Bursar
- Highway to Heaven (1984) Mr. Haskins
- Oh Madeline (1983)
- We Got It Made (1983) Mr. Foley
- Mr. Mom (1983) Norman Young
- The Day the Bubble Burst (1982)
- Ghost of a Chance (1981) Minister
- The Island (1980) Doctor #1
- Too Close for Comfort (1980) Terrence Chapman
- The Girl, the Gold Watch & Everything (1980) Hibber
- Bosom Buddies (1980) The Reverend
- Benson (1979) Al Tobias
- No Other Love (1979) Optician
- Nero Wolfe (1979) Theodore Horstmann
- House Calls (1979) Mr. Brattle
- Lassie: A New Beginning (1978) Jerry Bergan
- Taxi (1978) The Priest
- Moment by Moment (1978) Pharmacist
- First Love (1977) Waiter, not listed in credits
- Demon Seed (1977) Royce
- Heroes (1977) Ticket Clerk
- Banjo Hackett: Roamin' Free (1976) Mr. Creed
- All the President's Men (1976) Attorney #1
- One Day at a Time (1975) Harold
- Farewell, My Lovely (1975) Lindsay Marriott
- A Moon for the Misbegotten (1975) T. Stedman Harder
- Barney Miller (1974) Leo Hadden, KGB
- A New Leaf (1971) Desk Clerk, not listed in credits
- The Heart Is a Lonely Hunter (1968) Beaudine
- The Group (1966) Put Blake
- Car 54, Where Are You? (1961) Georgie Carmody
- Julius Caesar (1950) Marullus
