Actor
- Not Quite Hollywood: The Wild, Untold Story of Ozploitation! (2008) .... Himself (archive footage)
- Going to Pieces: The Rise and Fall of the Slasher Film (2006) .... Sam Loomis (archive footage)
- 'Halloween': A Cut Above the Rest (2003) .... Himself (archive footage)
- Best Ever Bond (2002) .... Himself (archive footage) (uncredited)
- Halloween: Resurrection (2002) .... Dr. Samuel 'Sam' Loomis (archive footage) (uncredited)
- In and Out of Fashion (1998) .... Himself (archive footage)
- Fatal Frames (1997) .... Professor Robinson
- Signs and Wonders (1996) .... Cornelius Van Damm
- Halloween: The Curse of Michael Myers (1995) .... Dr. Sam Loomis
- The Princess and the Cobbler (1995) .... Phido the Vulture (voice)
- The 67th Annual Academy Awards (1995) .... Himself (Memorial Tribute) (archive footage)
- Safe Haven (1995) .... The Sailor
- The Hour of the Pig (1994) .... Pincheon
- Guinevere (1994) .... Merlin
- The Big Freeze (1993) .... Soup slurper
- Femme Fatale (1993) .... Victor Harty
- Shadows and Fog (1992) .... Doctor
- Diên Biên Phú (1992) .... Howard Simpson
- Buried Alive (1991) .... Dr. Schaeffer
- Scoop (1991) .... Lord Copper
- Miliardi (1991) .... Ripa
- Ritorno di Robin Hood, Il (1991) .... (archive footage)
- Ten Little Indians (1990) .... Mr. Justice Lawrence Wargrave
- American risciò (1990) .... Reverend Mortom
- Donne armate (1990) .... Dreyfuss
- A Caribbean Mystery (1989) .... Jason Rafiel
- Casablanca Express (1989) .... Colonel Bats
- Halloween 5 (1989) .... Dr. Sam Loomis
- River of Death (1989) .... Heinrich Spaatz
- Paganini Horror (1989) .... Mr. Pickett
- Centennial The Massacre (1989) .... Sam Purchas
- Hanna's War (1988) .... Captain Thomas Rosza
- The Great Escape II: The Untold Story (1988) .... Dr, Absalon
- Halloween 4: The Return of Michael Myers (1988) .... Dr. Sam Loomis
- Nosferatu a Venezia (Vampire in Venice) (1988) .... Don Alvise
- Angel Hill: l'ultima missione (1988) .... Colonel B. Abrams
- Der Commander (1988) .... Henry Carlson
- Where Is Parsifal? (1988) .... Mackintosh
- The House of Usher (1988) .... Walter Usher
- Un Delitto poco comune (1988) .... Inspector Datti
- Django 2: il grande ritorno (Django Strikes Again) (1987) .... Gunn
- Prince of Darkness (1987) .... Father Loomis
- Ground Zero (1987) .... Prosper Gaffney
- Double Target (1987) .... Senator Blaster
- Basements (1987) .... Mr. Kidd (segment "The Room")
- Warrior Queen (1987) .... Clodius Flaucus, ruler of Pompeii
- Animali metropolitani (1987) .... Prof. Livingstone
- Cobra Mission (1986) .... Father Lenoir
- Into the Darkness (1986) .... David Beckett
- Onora il padre (1986) .... Aldo Rossi
- Sotto il vestito niente (1985) .... Commissioner Danesi
- Phenomena (Creepers) (1985) .... Professor John McGregor
- The Treasure of the Amazon (1985) .... Klaus von Blantz
- Arch of Triumph (1985) .... Haake
- The Corsican Brothers (1985) .... The Chancellor
- The Ambassador (1985) .... Minister Eretz
- Black Arrow (1985) .... Sir Oliver Oates
- To Kill a Stranger (1985) .... Col. Kostik
- Reel Horror (1985) .... Axel MacGregor (archive footage)
- Il Mondo dell'orrore di Dario Argento (1985) .... Himself / Prof. John McGregor
- Terror in the Aisles (1984) .... Host / Dr. Loomis (Halloween I & II)
- Master of the Game (1984) .... Salomon Van der Merwe
- Frankenstein's Great Aunt Tillie (1984) .... Victor Frankenstein / Old Baron Frankenstein
- A Breed Apart (1984) .... J.P. Whittier
- The Devonsville Terror (1983) .... Dr. Warley
- Warrior of the Lost World (1983) .... Prossor
- Witness for the Prosecution (1982) .... Mr. Myers
- Alone in the Dark (1982) .... Dr. Leo Bain
- The Barchester Chronicles (1982) .... Rev. Septimus Harding
- Computercide (1982) .... George Dettler
- Halloween II (1981) .... Dr. Sam Loomis
- Escape from New York (1981) .... President of the United States
- The Monster Club (1981) .... Pickering, Chief of the B-Squad
- Race for the Yankee Zephyr (1981) .... Gilbert Carson
- Blade on the Feather (1980) .... Professor Jason Cavendish
- Uomo puma, L' (1980) .... Kobras (as Donald Pleasance)
- The French Atlantic Affair (1979) .... Max Dechambre
- All Quiet on the Western Front (1979) .... Kantorek
- Better Late Than Never (1979) .... Colonel Riddle
- Dracula (1979) .... Dr. Jack Seward
- L' Homme en colère (1979) .... Albert Pumpelmeyer
- Gold of the Amazon Women (1979) .... Clarence Blasko
- Jaguar Lives! (1979) .... General Villanova
- Good Luck, Miss Wyckoff (1979) .... Dr. Steiner
- Centennial The Storm (1979) .... Sam Purchas
- Centennial The Winds of Death (1979) .... Sam Purchas
- Centennial The Winds of Fortune (1979) .... Sam Purchas
- Centennial The Scream of Eagles (1979) .... Sam Purchas
- Centennial The Crime (1979) .... Sam Purchas
- Power Play (1978) .... Blair
- Halloween (1978) .... Dr. Sam Loomis
- Centennial (1978) .... Sam Purchas
- L' Ordre et la sécurité du monde (Concorde Affair) (1978) .... Rothko
- Sgt. Pepper's Lonely Hearts Club Band (1978) .... B.D. Hoffler
- The Bastard (1978) .... Solomon Sholto
- Tomorrow Never Comes (1978) .... Dr. Todd
- The Dark Secret of Harvest Home (1978) .... Narrator (voice)
- The Defection of Simas Kudirka (1978) .... Captain Vladimir Popov
- Night Creature (1978) .... Axel MacGregor
- Liens de sang, Les (1978) .... James Doniac
- Centennial Only the Rocks Live Forever (1978) .... Sam Purchas (credit only)
- Centennial The Yellow Apron (1978) .... Sam Purchas
- Centennial The Shepherds (1978) .... Sam Purchas
- Centennial The Longhorns (1978) .... Sam Purchas
- Centennial For as Long as the Waters Flow (1978) .... Sam Purchas
- Centennial The Wagon and the Elephant (1978) .... Sam Purchas
- Telefon (1977) .... Nicolai Dalchimsky
- Oh, God! (1977) .... Doctor Harmon
- Goldenrod (1977) .... John Tyler Jones
- Jesus of Nazareth (1977) .... Melchior
- The Uncanny (1977) .... Valentine De'ath
- The Eagle Has Landed (1976) .... Heinrich Himmler
- Hindle Wakes (1976) .... Nat Jeffcote
- The Last Tycoon (1976) .... Boxley
- I Don't Want to Be Born (1976) .... Dr. Finch
- The Passover Plot (1976) .... Pontius Pilate
- The Devil's Men (1976) .... Father Roche
- Trial by Combat (1976) .... Sir Giles Marley
- Ubu roi (1976) .... Pa Ubu
- Hearts of the West (1975) .... A.J. Neitz
- Journey Into Fear (1975) .... Kuvetli
- Escape to Witch Mountain (1975) .... Lucas Deranian
- The Count of Monte-Cristo (1975) .... Danglars
- Malachi's Cove (1974) .... Malachi
- The Mutations (1974) .... Professor Nolter
- The Black Windmill (1974) .... Cedric Harper
- Altrimenti ci arrabbiamo (1974) .... The Doctor
- Barry McKenzie Holds His Own (1974) .... Erich Count von Plasma
- La Loba y la Paloma (The Wolf and the Dove) (1974) .... Martin Zayas
- BBC2 Playhouse (1974) .... Aaron / ... (3 episodes, 1974-1976)
- Tales That Witness Madness (1973) .... Dr. R.C. Tremayne
- Columbo: Any Old Port in a Storm (1973) .... Adrian Carsini
- The Rainbow Boys (1973) .... Ralph Logan
- Kidnapped (1973) .... Ebenezer Balfour
- Dr. Jekyll and Mr. Hyde (1973) .... Fred Smudge
- The Spirit of Dark and Lonely Water (1973) .... The Spirit (voice)
- From Beyond the Grave (1973) .... Jim Underwood (segment "An Act of Kindness")
- The Pied Piper (1972) .... The Baron
- Wedding in White (1972) .... Jim Dougall, Sr.
- Innocent Bystanders (1972) .... Loomis
- Death Line (1972) .... Inspector Calhoun
- The Jerusalem File (1972) .... Major Samuels
- Henry VIII and His Six Wives (1972) .... Thomas Cromwell
- Russell Harty Plus (1972) .... Himself - Guest (1 episode, 1972)
- THX 1138 (1971) .... SEN
- Wake in Fright (1971) .... 'Doc' Tydon
- Soldier Blue (1970) .... Isaac Q. Cumber
- Frost Over America (1970) .... Himself - Interviewee (1 episode, 1972)
- The Madwoman of Chaillot (1969) .... The Prospector
- Mr. Freedom (1969) .... Dr. Freedom (as Don Pleasence)
- Arthur! Arthur! (1969) .... Arthur Brownjohn / Sir Easonby 'E' Mellon
- Will Penny (1968) .... Preacher Quint
- Creature of Comfort (1968) .... James Thorne
- The Other People (1968) .... Elsa's father
- The Diary of Anne Frank (1967) .... Mr. Dusseli
- Matchless (1967) .... Gregori Andreanu
- You Only Live Twice (1967) .... Ernst Stavro Blofeld
- Welcome to Japan, Mr. Bond (1967) .... Ernst Stavro Blofeld (archive footage)
- The Night of the Generals (1967) .... Maj. Gen. Kahlenberg
- Cul-de-sac (1966) .... George
- Fantastic Voyage (1966) .... Dr. Michaels
- Dr. Crippen (1966) .... Dr. Hawley Harvey Crippen
- Eye of the Devil (1966) .... Pere Dominic
- Thirty-Minute Theatre (1965) .... Bendel / ... (3 episodes, 1967-1973)
- The Hallelujah Trail (1965) .... 'Oracle' Jones
- The Greatest Story Ever Told (1965) .... The Dark Hermit - Satan
- The Hands of Orlac (1964) .... Graham Coates
- The Caretaker (1964) .... Mac Davies / Bernard Jenkins
- The Great Escape (1963) .... Flight Lt. Colin Blythe "The Forger"
- Lisa (1962) .... Sgt. Wolters
- The Twilight Zone The Changing of the Guard (1962) .... Professor Ellis Fowler
- No Love for Johnnie (1961) .... Roger Renfrew
- The Shakedown (1961) .... Jessel Brown
- Spare the Rod (1961) .... Mr. Jenkins
- The Wind of Change (1961) .... Pop
- Tempo (1961) .... Arthur Goldman (1 episode, 1968)
- What a Carve Up! (1961) .... Everett Sloane
- Hell Is a City (1960) .... Gus Hawkins
- The Flesh and the Fiends (1960) .... William Hare
- Sons and Lovers (1960) .... Mr. Puppleworth
- The Battle of the Sexes (1960) .... Irwin Hoffman (as Donald Pleasance)
- The Big Day (1960) .... Victor Partridge
- Circus of Horrors (1960) .... Vanet
- Suspect (1960) .... Parsons, alias Bill Brown
- A Story of David (1960) .... Nabal
- Armchair Mystery Theatre (1960) .... Himself - Host (12 episodes, 1960-1965)
- Look Back in Anger (1959) .... Hurst
- Killers of Kilimanjaro (1959) .... Captain
- The Two-Headed Spy (1959) .... General Hardt
- The Scarf (1959) .... Det. Insp. Harry Yates (6 episodes, 1959)
- A Tale of Two Cities (1958) .... Barsad
- The Wind Cannot Read (1958) .... Doctor
- Heart of a Child (1958) .... Spiel
- The Man Inside (1958) .... Organ-grinder
- Barnacle Bill (1957) .... Cashier
- Manuela (1957) .... Evans
- The Man in the Sky (1957) .... Crabtree
- Value for Money (1956) .... Limpy
- 1984 (1956) .... R. Parsons
- The Black Tent (1956) .... Ali
- Armchair Theatre (1956) .... Arthur Gladwell / ... (8 episodes, 1957-1967)
- ITV Television Playhouse (1955) .... Albert / ... (5 episodes, 1956-1959)
- The Face of Love (1954) .... Alex
- The Beachcomber (1954) .... Tromp
- Orders Are Orders (1954) .... Cpl. Martin
- Montserrat (1954) .... Juan Alvarez
- BBC Sunday-Night Theatre (1950) .... Chamberlain / ... (5 episodes, 1952-1959)
- Halloween H20: 20 Years Later (1998) .... in memory of (as Donald Pleasance)
- Halloween: The Curse of Michael Myers (1995) .... in memory of


