Milo O'Shea
- Mystics
2003 Locky
- Puckoon
2002 Sgt. McGillikuddie
- Rough for Theatre I
2000 B
- Madigan Men
2000
- Swing Vote
1999 Justice Harlan Greene
- The West Wing
1999 Roy Ashland
- The Butcher Boy
1998 Father Sullivan
- The Matchmaker
1997 Dermot O'Brien
- Oz
1997 Dr. Frederick Garvey
- Early Edition
1996 Sherman
- Spin City
1996 Father Larry
- Frasier
1993 Dr. Schachter
- The Playboys
1992 Freddie
- Only the Lonely
1991 Doyle
- The Commish
1991 Frank Atkins
- Opportunity Knocks
1990 Max
- The Dream Team
1989 Dr. Newald
- Angel in Green
1987 Father Mahon
- Broken Vows
1987 Monsignor Casey
- Once a Hero
1987 Abner Bevis
- Once a Hero
1987 Abner Bevis
- Beauty and the Beast
1987 Evan Brannigan
- Arena
1985 Dr. Duran Duran
- The Purple Rose of Cairo
1985 Father Donnelly
- The Golden Girls
1985 Buddy Rourke
- Who's the Boss?
1984
- Ellis Island
1984 Casey O'Donnell
- The Verdict
1982 Judge Hoyle
- St. Elsewhere
1982 Brendan Connelly
- Cheers
1982 Uncle Roger
- The Pilot
1980 Doctor O'Brian
- Portrait of a Rebel: The Remarkable Mrs. Sanger
1980 Michael Higgins
- Arabian Adventure
1979 Khasim
- Peter Lundy and the Medicine Hat Stallion
1977 Brisly
- That's Carry On!
1977 Len (archive footage) (uncredited)
- Circasia
1976 Clown
- Percy's Progress
1974 Dr. Klein
- Monster
1974
- Magic Powder
1974
- Into the Unknown
1974
- Pursued
1974
- Microbes and Men
1974 Paul Erlich
- QB VII
1974 Dr. Stanilaus Lotaki
- Theatre of Blood
1973 Inspector Boot
- Steptoe & Son Ride Again
1973 Dr. Popplewell
- The Love Ban
1973 Father Andrew
- Digby, the Biggest Dog in the World
1973 Dr. Jameson
- And No One Could Save Her
1973 Patrick Dooley
- Orson Welles' Great Mysteries
1973 Father Crumlish
- The Protectors
1972 Prince Carpiano
- Sacco & Vanzetti
1971 Fred Moore
- Loot
1970 Mr. McLeavy
- The Angel Levine
1970 Dr. Arnold Berg
- Paddy
1970 Harry Redmond
- On the House
1970 Mr. McGonigle
- The Adding Machine
1969 Mr. Zero
- Something in the Cellar
1969 Monty Lafcado
- Romeo and Juliet
1968 Friar Laurence
- Barbarella
1968 Concierge / Durand-Durand
- Journey Into Darkness
1968 Matt Dystal
- Journey to the Unknown
1968 Matt Dystal
- Ulysses
1967 Leopold Bloom
- Silent Song
1966 Brother Arnold
- Come Buttercup, Come Daisy, Come......?
1965 Henry Wilkes
- Out of the Unknown
1965 Henry Wilkes
- Thirty-Minute Theatre
1965 Fred
- Never Put It in Writing
1964 Danny O'Toole
- Bloomsday
1964 Leopold Bloom
- Theatre 625
1964 Mulligan
- The Wednesday Play
1964 Brother Arnold
- Carry On Cabby
1963 Len
- Festival
1963 Leopold Bloom
- Mrs. Gibbons' Boys
1962 Horse
- Out of This World
1962 Jacob Luke
- Drama 61-67
1961 Sam Quilley
- Night School
1960 Walter 'Wally' Street
- On Trial
1960 Charles Armstrong
- This Other Eden
1959 Pat Tweedy
- No Hiding Place
1959 Perkins
- Rooney
1958 Hurling Fan
- Theatre Night
1957 Shawn Keogh
- Armchair Theatre
1956 Seamus Connor
- Talk of a Million
1951 Signwriter
- Contraband
1940 Air Raid Warden
