Joseph O'Conor
- Macbeth
2001 King Duncan
- The Messenger: The Story of Joan of Arc
1999 chief inquisitor
- Elizabeth
1998 Earl of Derby
- Immortality
1998
- Dalziel and Pascoe
1996 Wally Tallantire
- Tom & Viv
1994 Bishop of Oxford
- The Forbidden Quest
1993 J.C. Sullivan
- Performance
1991 Earl of Northumberland
- Casualty
1986 George Polston
- Henry VI Part 1
1983 Duke of Exeter / Shepherd
- The Dark Crystal
1982 Narrator / Urskeks (voice)
- The Barchester Chronicles
1982 Bunce
- John Diamond
1981 Alfred Diamond
- Othello
1981 Lodovico
- A Private Battle
1980
- Only Connect
1979 John Bury
- The Other Side
1979 John Bury
- Romeo and Juliet
1978 Friar Laurence
- The Copyist
1978 Heinrich Schalleplatte
- The BBC Television Shakespeare
1978 Friar Laurence
- BBC2 Play of the Week
1977 Heinrich Schalleplatte
- The Ghost of Adelphi Terrace
1975 George Bernard Shaw
- The Black Windmill
1974 Sir Edward Julyan
- Lost Hearts
1973 Mr. Abney (as Joseph O'Connor)
- Father Dear Father
1973 Vicar
- Yellow Dog
1973 Dover
- Penny Gold
1973 Blachford
- Centre Play
1973 George Bernard Shaw
- Doomwatch
1972 Vicar
- A Ghost Story for Christmas
1971 Mr. Abney
- The Prime Minister's Daughter
1970 Mayland
- Manhunt
1970 Von Gebhardt
- Anne of the Thousand Days
1969 Fisher
- A Walk with Love and Death
1969 Pierre of St. Jean
- The Possessed
1969 Stepan Verhovensky
- Plays of Today
1969 Aston
- Oliver!
1968 Mr. Brownlow
- The Forsyte Saga
1967 'Old Jolyon' Forsyte
- Sir Arthur Conan Doyle
1967 James Campbell
- The Spies
1966 Polini
- Mystery and Imagination
1966 General
- Lord Raingo
1966 Andy Clyth
- The World of George Orwell: 1984
1965 O'Brien
- No Place Like Earth
1965 Freeman
- Out of the Unknown
1965 Freeman
- The Mill on the Floss
1965 Mr. Tulliver
- Hit and Run
1965 Gerald Prestley
- The Troubleshooters
1965 Captain Kenny
- The Gorgon
1964 Coroner
- The Devil-Ship Pirates
1964 Don Jose Margella
- Crooks in Cloisters
1964 Father Septimus
- Theatre 625
1964 O'Brien
- Redcap
1964 CO
- The Wednesday Play
1964 Joseph Brendon
- Festival
1963 Father Arnall
- Gorgo
1961 Prof. Hendricks
- The Rose Affair
1961 O'Riorden
- The Day of the Fox
1961 Colonel Gregory
- Twentieth Century Theatre: Colombe
1960 Lagarde
- An Arabian Night
1960 Caliph Haroun-Al-Raschid
- Worm in the Bud
1959 District Inspector
- Paul Temple's Triumph
1950 Inspector Crane
