| 2024 | Jim Henson Idea Man | Self (archive footage) |
| 2022 | Louis Armstrong's Black & Blues | Self (archive Footage) |
| 2022 | Clint Eastwood, la dernière légende | Self (archive footage) |
| 2021 | Street Gang: How We Got to Sesame Street | Self (archive footage) (uncredited) |
| 2021 | The Blinding of Isaac Woodard | Himself (archive footage) |
| — | Something Else | |
| — | The Cave: a parable told by Orson Welles | Narrator |
| 2024 | LIFE BEYOND: Visions of Alien Life | Narrator (Archive Sound) |
| 2024 | The Battle of Grovers Mill | Radio Host (voice) (archival footage) |
| 2023 | From Introduction to Orson Welles’s Falstaff: Chimes at Midnight | Falstaff |
| 2023 | Othelo, O Grande | Ele Mesmo (Imagem de Arquivo) |
| 2023 | Looking Back Before You Leap | General Zaroff (voice) |
| 2023 | It's Pretty, but is it Art? | Self (voiceover) |
| 2023 | Charmed Lives: A Family Romance | Self (archive footage) |
| 2022 | The Lost Print: The Making of Orson Welles’ The Magnificent Ambersons | Himself (Archive footage) |
| 2022 | American: An Odyssey to 1947 | Self (archive footage) |
| 2022 | A Jangada de Welles | Himself (Archive Footage) |
| 2021 | Parkinson at 50 | Self (archive footage) |
| 2021 | Tall Tales: The Ireland of Orson Welles | Self |
| 2020 | Natalie Wood: What Remains Behind | Self (archive footage) |
| 2020 | Hopper/Welles | Self |
| 2019 | LIFE BEYOND I: The Dawn | Narrator |
| 2019 | Emergency: Donald Trump’s "Touch of Evil" | (archive footage) |
| 2018 | The Other Side of the Wind | Journalist (uncredited) |
| 2018 | They'll Love Me When I'm Dead | Self (archive footage) |
| 2018 | The Great Buster: A Celebration | Self (archive footage) |
| 2018 | The Eyes of Orson Welles | Self - Filmmaker / Various Roles (archive footage) |
| 2018 | Jeanne Moreau, l'affranchie | Self - Filmmaker (archive footage) |
| 2017 | The Magic History of Cinema | |
| 2016 | Embers & Dust | Professor Richard Pierson / Self (voice) (archive sound) |
| 2015 | This Is Orson Welles | Self |
| 2014 | Magician: The Astonishing Life and Work of Orson Welles | Self - Filmmaker / Various Roles (archive footage) |
| 2014 | Alfonso Sansone - produttore per caso | Self (archive footage) |
| 2013 | Jodorowsky's Dune | Self (Archival Footage) |
| 2013 | Too Much Johnson | Keystone Kop |
| 2013 | Talking Pictures | Self (archive footage) |
| 2012 | Final Cut: Hölgyeim és uraim | (archive footage) |
| 2012 | The Shadow Knows | Self (archive footage) |
| 2011 | Shut Up Little Man! An Audio Misadventure | Himself |
| 2010 | Cameraman: The Life and Work of Jack Cardiff | Genghis Khan / Bayan (archive footage) |
| 2010 | Orson Welles: The Paris Interview | Himself |
| 2009 | Lucifer et moi | (archive footage 1982) |
| 2007 | The Deep | Russ Brewer |
| 2006 | Edge of Outside | Self (archive footage) |
| 2005 | Cineastes contra magnats | Self (archive footage) |
| 2005 | Brunnen | |
| 2005 | Druga strana Wellesa | Self (archive footage) |
| 2004 | The Hitch Hiker | Ronald Adams |
| 2003 | Rita | (archive footage) |
| 2003 | L’Affaire Dominici par Orson Welles | Self (archive footage) |
| 2002 | Lost in La Mancha | Self (archive footage) |
| 2001 | A Huey P. Newton Story | Self (archive footage) (uncredited) |
| 2001 | The Paranormal Peter Sellers | Self (Archive footage) |
| 2001 | NASA: A Space Odyssey Vol. 3 | Narrator |
| 2000 | Lon Chaney: A Thousand Faces | Self (archive footage) |
| 2000 | Orson Welles en el país de don Quijote | Self (Archive footage) |
| 2000 | Moby Dick | Captain Ahab / Starbuck / Ishmael (archive footage) |
| 1999 | According to Occam's Razor | |
| 1998 | The Best of the Dean Martin Celebrity Roasts | Self - Roaster (archive footage) |
| 1997 | Who Is Henry Jaglom? | Self (archive footage) |
| 1997 | Tudo é Brasil | Self (archive footage) |
| 1997 | Celebração - 100 Anos do Cinema Nacional | Self |
| 1996 | The Battle Over Citizen Kane | Self (archive footage) |
| 1995 | A Personal Journey with Martin Scorsese Through American Movies | Self |
| 1995 | Orson Welles: The One-Man Band | Self (archive footage) |
| 1993 | La Classe américaine | Self (archive footage) |
| 1993 | It's All True | Self |
| 1993 | Working with Orson Welles | Himself (Archive Footage) |
| 1993 | Rosabella - La storia italiana di Orson Welles | |
| 1992 | Don Quijote de Orson Welles | Self |
| 1990 | Rita Hayworth: Dancing Into the Dream | Self (archive footage) |
| 1990 | A Linguagem de Orson Welles | Self (archive footage) |
| 1990 | Star Life | Self (archive footage) |
| 1990 | With Orson Welles: Stories from a Life in Film | Self (archive footage) |
| 1988 | On the tracks of a filmmaker | Orson Welles |
| 1987 | Someone to Love | Danny's Friend |
| 1986 | The Transformers: The Movie | Unicron (voice) |
| 1986 | Nem Tudo É Verdade | Himself (archive footage) |
| 1986 | The Muppets: A Celebration of 30 Years | Self (archive footage) |
| 1985 | Moonlighting | Orson Welles |
| 1985 | The Dreamers | Marcus Kleek |
| 1985 | Orson Welles' Magic Show | Self |
| 1985 | Scene of the Crime | |
| 1985 | Almonds and Raisins | Narrator |
| 1984 | De weg naar Bresson | Self |
| 1984 | The Spirit of Charles Lindbergh | himself |
| 1984 | Where Is Parsifal? | Klingsor |
| 1984 | The Last Sailors: The Final Days of Working Sail | Narrator |
| 1984 | The Dean Martin Celebrity Roast: Michael Landon | |
| 1984 | In Our Hands | Himself |
| 1983 | Hot Money | Sheriff Paisley |
| 1983 | Notre Dame de la Croisette | Self (archive footage) (uncredited) |
| 1983 | The Witching | Mr. Cato |
| 1983 | Orson Welles à la Cinémathèque française | Himself |
| 1983 | King Penguin: Stranded Beyond the Falklands | Self - Narrator |
| 1983 | The Psychic Connection | Narrator |
| 1982 | Butterfly | Judge Rauch |
| 1982 | Slapstick of Another Kind | Aliens' Father (voice) |
| 1982 | Genocide | Narrator (voice) |
| 1982 | The Quest for Fire Adventure | Narrator |
| 1982 | Natalie - A Tribute to a Very Special Lady | Self |
| 1982 | Night of 100 Stars | Self |
| 1982 | Magic with the Stars | Host |
| 1982 | Baryshnikov in Hollywood | Self - Narrator |
| 1982 | Let Poland Be Poland | Self |
| 1982 | Doug Henning's World of Magic | Self - Special Guest |
| 1982 | Wagner e Venezia | Richard Wagner (voice) |
| 1981 | History of the World: Part I | Narrator |
| 1981 | The Man Who Saw Tomorrow | Presenter / Narrator (voice) |
| 1981 | Brasil | Self (archive footage) |
| 1981 | Filming 'The Trial' | Self |
| 1981 | The Enchanted Journey | Pippo |
| 1981 | The New Deal for Artists | Narrator (voice) |
| 1981 | Search for the Titanic | Himself (host) |
| 1981 | A Gift of Harvest | Narrator |
| 1981 | Tales of the Klondike | Narrator |
| 1980 | Magnum, P.I. | Robin Masters (uncredited) (voice) |
| 1980 | Magnum, P.I. | Robin Masters (voice) |
| 1980 | Shōgun | Narrator |
| 1980 | Tajna Nikole Tesle | J.P. Morgan |
| 1980 | The Greenstone | Narrator (voice) |
| 1980 | A un solo paso | English Narrator |
| 1980 | Franklin D. Roosevelt Four Freedoms Park | Narrator |
| 1979 | The Muppet Movie | Lew Lord |
| 1979 | The Double McGuffin | Narrator |
| 1979 | The Greatest Adventure--The Story of Man's Voyage to the Moon | Narrator |
| 1979 | The Orson Welles Show | Self |
| 1979 | Frank Sinatra: The First 40 Years | Self |
| 1979 | To Try Again... and Succeed | Narrator (voice) |
| 1979 | The New Media Bible: Book of Genesis | Narrator |
| 1978 | Filming Othello | Host |
| 1978 | Il grande attacco | Narratore |
| 1978 | A Woman Called Moses | Narrator (voice) |
| 1978 | The Late Great Planet Earth | Self |
| 1978 | Mysterious Castles of Clay | Narrator |
| 1978 | The Magic of David Copperfield | |
| 1978 | Tut: The Boy King | Himself - Host |
| 1978 | Caesar's Guide to Gaming with Orson Welles | Himself |
| 1977 | The Force Beyond | Himself (archive footage) |
| 1977 | It Happened One Christmas | Henry F. Potter |
| 1977 | Hot Tomorrows | Parklawn Mortuary (voice) |
| 1977 | The Rime of the Ancient Mariner | Narrator |
| 1977 | From Fiber to Fabric: Wool's a Natural | Narrator |
| 1977 | The Lions of Capitalism: Some Call It Greed | Narrator |
| 1976 | Voyage of the Damned | José Estedes |
| 1976 | NBC: The First Fifty Years | Self / Narrator |
| 1975 | Bugs Bunny Superstar | Narrator (voice) |
| 1975 | Rikki-Tikki-Tavi | Narrator / Nag / Chuchundra (voice) |
| 1975 | Brother, Can You Spare a Dime? | Self (archive footage) |
| 1975 | Who's Out There? | Host |
| 1975 | Orson Welles - Das Vermarktete Genie | Self |
| 1975 | Magnificent Monsters of the Deep | Narrator |
| 1975 | Doug Henning's World of Magic | Self |
| 1974 | And Then There Were None | Voice on Tape |
| 1974 | Letter to Jane: An Investigation About a Still | Self (archive footage) (uncredited) |
| 1974 | The Challenge... A Tribute to Modern Art | Narrator |
| 1974 | Dinah! | Self |
| 1974 | Une légende une vie: Citizen Welles | |
| 1973 | Vérités et Mensonges | Self |
| 1973 | Sutjeska | Winston Churchill |
| 1973 | The Dean Martin Celebrity Roasts | Self |
| 1973 | Orson Welles' Great Mysteries | Self - Host |
| 1973 | The American Film Institute Salute to ... | Self |
| 1973 | The Cave | Narrator |
| 1973 | Power and Corruption | Himself |
| 1973 | Kelly Country | Narrator |
| 1972 | Treasure Island | Long John Silver |
| 1972 | Necromancy | Mr. Cato |
| 1972 | Get to Know Your Rabbit | Mr. Delasandro |
| 1972 | Future Shock | Narrator |
| 1972 | The Man Who Came to Dinner | Sheridan Whiteside |
| 1972 | Vive le cinema! | |
| 1971 | Directed by John Ford | Narrator (voice) |
| 1971 | Malpertuis | Cassavius |
| 1971 | La Décade prodigieuse | Théo Van Horn |
| 1971 | A Safe Place | The Magician |
| 1971 | Centinelas del Silencio | |
| 1971 | Freedom River | Narrator |
| 1971 | V.I.P. Schaukel | Self |
| 1971 | فروغ جاودان | Narrator |
| 1971 | London | Winston Churchill / George Bernard Shaw |
| 1971 | The Silent Years | |
| 1970 | Catch-22 | Brigadier General Dreedle |
| 1970 | Waterloo | Louis XVIII |
| 1970 | Night Gallery | Narrator |
| 1970 | The Kremlin Letter | Bresnavitch |
| 1970 | Start the Revolution Without Me | The Narrator |
| 1970 | Is It Always Right to Be Right? | Narrator |
| 1970 | A Horse Called Nijinsky | Narrator |
| 1970 | Upon This Rock | Michelangelo (voice) |
| 1970 | An Evening with Orson Welles: The Golden Honeymoon | |
| 1970 | Salvador Dalí: A Soft Self-Portrait | Narrator |
| 1970 | The Enemy Before Us | Narrator |
| 1970 | An Evening with Orson Welles | |
| 1969 | Tepepa | Colonel Cascorro |
| 1969 | Bitka na Neretvi | Četnik |
| 1969 | 12 + 1 | Markan |
| 1969 | The Southern Star | Plankett |
| 1969 | To Build a Fire | Narrator (voice) |
| 1969 | Kampf um Rom II - Der Verrat | Justinian |
| 1969 | The Merchant of Venice | Shylock |
| 1969 | Soft Self-Portrait of Salvador Dali | Narrator |
| 1968 | The Immortal Story | Charles Clay |
| 1968 | The Dick Cavett Show | Self - Guest |
| 1968 | The Name of the Game | Narrator |
| 1968 | House of Cards | Leschenhaut |
| 1968 | Vienna | Himself |
| 1968 | Kampf um Rom – 1. Teil | Justinian |
| 1968 | Portrait: Orson Welles | Self |
| 1968 | Oedipus the King | Tiresias |
| 1968 | Around the World of Mike Todd | Self - Narrator |
| 1968 | One Man Band | |
| 1967 | Casino Royale | Le Chiffre |
| 1967 | Rowan & Martin's Laugh-In | Self |
| 1967 | I'll Never Forget What's'isname | Jonathan Lute |
| 1967 | The Sailor from Gibraltar | Louis de Mozambique |
| 1967 | Ten Days That Shook the World | Narrator |
| 1967 | Omnibus | Self - Presenter |
| 1967 | Le désordre a vingt ans | Self |
| 1967 | Beggars Would Ride | Narrator |
| 1966 | A Man for All Seasons | Cardinal Wolsey |
| 1966 | Paris brûle-t-il? | Konsul Nordling |
| 1966 | Orson Welles in Spain | Himself |
| 1965 | Campanadas a medianoche | Falstaff |
| 1965 | La Fabuleuse Aventure de Marco Polo | Akerman, Marco's Teacher |
| 1965 | National Geographic Specials | Narrator |
| 1965 | A King's Story | Narrator |
| 1965 | Miss Goodall and the Wild Chimpanzees | Self - Narrator (voice) |
| 1964 | The Finest Hours | Narrator (voice) |
| 1964 | Nella terra di Don Chisciotte | Himself |
| 1963 | Ro.Go.Pa.G. | The 'Director' (segment "La ricotta") |
| 1963 | The V.I.P.s | Max Buda |
| 1963 | Hollywood and the Stars | Self (archive footage) |
| 1962 | Le Procès | Albert Hastler |
| 1962 | The Tonight Show Starring Johnny Carson | Self |
| 1962 | The Tonight Show Starring Johnny Carson | Self - Guest Host |
| 1962 | The Merv Griffin Show | Self |
| 1962 | La Fayette | Benjamin Franklin |
| 1962 | Der große Atlantik | Narrator (English) |
| 1961 | King of Kings | Narrator (Voice) |
| 1961 | I tartari | Burundai |
| 1961 | Tempo | |
| 1961 | Survival | Narrator |
| 1960 | Austerlitz | Robert Fulton |
| 1960 | David e Golia | King Saul |
| 1960 | Crack in the Mirror | Hagolin / Lamerciere |
| 1960 | An Arabian Night | Storyteller |
| 1959 | Compulsion | Jonathan Wilk |
| 1959 | Ferry to Hong Kong | Captain Hart |
| 1959 | High Journey | Narrator |
| 1958 | Touch of Evil | Police Captain Hank Quinlan |
| 1958 | The Vikings | Narrator (voice) (uncredited) |
| 1958 | The Long, Hot Summer | Will Varner |
| 1958 | The Roots of Heaven | Cy Sedgewick |
| 1958 | The Fountain of Youth | the narrator |
| 1958 | South Seas Adventure | Narrator |
| 1958 | Orson Welles at Large: Portrait of Gina | Self - Host |
| 1958 | Les Seigneurs de la forêt | Narrator (voice) |
| 1958 | Colgate Theatre | |
| 1957 | Man in the Shadow | Virgil Renchler |
| 1956 | Moby Dick | Father Mapple |
| 1956 | The Steve Allen Show | Self |
| 1956 | Cinépanorama | Self |
| 1956 | Out of Darkness | Self - Narrator |
| 1955 | Mr. Arkadin | Gregory Arkadin |
| 1955 | Three Cases of Murder | Lord Mountdrago ("Lord Mountdrago" segment) |
| 1955 | Napoléon | Sir Hudson Lowe |
| 1955 | Around the World with Orson Welles | Host: Orson Welles |
| 1955 | Around the World with Orson Welles | Self (Host) |
| 1955 | Orson Welles' Sketch Book | Self - Host |
| 1955 | Orson Welles' Sketch Book | Himself - Host |
| 1955 | The Land of the Basques | Himself |
| 1955 | Ford Star Jubilee | Oscar Jaffe |
| 1954 | Si Versailles m'était conté | Benjamin Franklin |
| 1954 | Trouble in the Glen | Sanin Cejador y Mengues |
| 1953 | Return to Glennascaul | Narrator |
| 1953 | L'uomo, la bestia e la virtù | Captain Perella, the Beast |
| 1953 | King Lear | King Lear |
| 1952 | Trent's Last Case | Sigsbee Manderson |
| 1952 | Omnibus | King Lear |
| 1951 | I Love Lucy | Orson Welles |
| 1951 | Othello | Othello |
| 1951 | Hallmark Hall of Fame | Sheridan Whiteside |
| 1950 | What's My Line? | Self - Panelist |
| 1950 | The Black Rose | Bayan |
| 1950 | Désordre | Self |
| 1949 | The Third Man | Harry Lime |
| 1949 | Prince of Foxes | Cesare Borgia |
| 1949 | Black Magic | Joseph Balsamo aka Count Cagliostro |
| 1948 | Macbeth | Macbeth |
| 1948 | The Ed Sullivan Show | Self |
| 1948 | The Ed Sullivan Show | Self / King Lear |
| 1947 | The Lady from Shanghai | Michael O'Hara |
| 1946 | The Stranger | Prof. Charles Rankin |
| 1946 | Duel in the Sun | Narrator (voice) (uncredited) |
| 1946 | Tomorrow Is Forever | John Andrew MacDonald |
| 1946 | Battle for Survival | Narrator |
| 1945 | Mexico City, Old and New | Narrator |
| 1944 | Follow the Boys | Orson Welles (uncredited) |
| 1944 | Know Your Ally: Britain | Narrator/Bob (helpful taxi passenger) |
| 1943 | Jane Eyre | Edward Rochester |
| 1943 | Journey into Fear | Colonel Haki |
| 1943 | Show-Business at War | Self |
| 1942 | The Magnificent Ambersons | Narrator (voice) |
| 1941 | Citizen Kane | Charles Foster Kane |
| 1940 | Swiss Family Robinson | Opening Narrator |
| 1937 | The Spanish Earth | Narrator (voice) |
| 1934 | The Hearts of Age | Death |
| 1933 | Twelfth Night | Narrator |
