| Ano | Nota | Título | Personagem |
|---|---|---|---|
| 1995 | Orson Welles: The One-Man Band | Self (segment "The deep") (archive footage) | |
| 1992 | John Wayne's 'The Alamo' | Col. William Travis | |
| 1979 | Mission Mind Control | Raymond Shaw (archive footage) | |
| 1974 | Welcome to Arrow Beach | Jason Henry | |
| 1974 | Welcome to Arrow Beach | Director | |
| 1973 | Vigília nas Sombras | John Wheeler | |
| 1973 | Verdades e Mentiras | Self | |
| 1972 | Escape to the Sun | Major Kirsanov | |
| 1970 | A Sala dos Espelhos | Farley | |
| 1970 | The Deep | Hughie Warriner | |
| 1969 | Will the Real Mr Sellers.....? | Self | |
| 1969 | Um Beatle no Paraíso | Hamlet | |
| 1969 | L'assoluto naturale | He | |
| 1969 | Kampf um Rom II - Der Verrat | Cethegus | |
| 1968 | Kampf um Rom – 1. Teil | Cethegus | |
| 1968 | A Longa Noite do Enigma | Jeff Miller | |
| 1968 | The Winter's Tale | King Leontes | |
| 1968 | A Carga da Brigada Ligeira | Russian Prince (Uncredited) | |
| 1968 | O Espião de Dois Mundos | Eberlin | |
| 1968 | O Espião de Dois Mundos | Director | |
| 1967 | Dial M for Murder | Tony Wendice | |
| 1966 | The Spy with a Cold Nose | Dr. Francis Trevelyan | |
| 1965 | Life at the Top | Joe Lampton | |
| 1965 | Darling: A Que Amou Demais | Miles Brand | |
| 1964 | Quatro Confissões | Husband | |
| 1964 | Servidão Humana | Philip Carey | |
| 1964 | MGM 40th Anniversary | - | |
| 1963 | The Ceremony | Sean McKenna | |
| 1963 | The Ceremony | Director | |
| 1963 | The Ceremony | Producer | |
| 1963 | The Ceremony | Additional Dialogue | |
| 1963 | A Sombra de uma Fraude | Rex Black | |
| 1962 | A Girl Named Tamiko | Ivan Kalin | |
| 1962 | Sob o Domínio do Mal | Raymond Shaw | |
| 1962 | The Wonderful World of the Brothers Grimm | Wilhelm Grimm / Cobbler (segment "The Cobbler and the Elves") | |
| 1962 | Noah and the Flood | Narrator | |
| 1962 | Pelos Bairros do Vício | Dove Linkhorn | |
| 1962 | Noah and the Flood | Narrator | |
| 1961 | O Anjo de Pedra | John Buchanan Jr. | |
| 1961 | Dois Amores | Paul Lathrope | |
| 1961 | The Long and the Short and the Tall | Pvt. 'Bammo' Bamforth | |
| 1960 | Disque Butterfield 8 | Weston Liggett | |
| 1960 | O Álamo | Col. William Travis | |
| 1959 | Expresso Bongo | Johnny Jackson | |
| 1959 | Power Among Men | Narrator | |
| 1958 | Almas em Leilão | Joe Lampton | |
| 1958 | The Silent Enemy | Lieutenant "Buster" Crabb, R.N.V.R. | |
| 1957 | As Sete Mulheres de Minha Vida | Sir Humphrey Tavistock | |
| 1957 | After the Ball | Walter de Frece | |
| 1956 | Three Men in a Boat | George | |
| 1955 | Tormenta Sobre o Nilo | John Durrance | |
| 1955 | I Am a Camera | Christopher Isherwood | |
| 1954 | Romeu e Julieta | Romeo | |
| 1954 | King Richard and the Crusaders | Sir Kenneth of the Leopard | |
| 1954 | Os Bons Morrem Cedo | Miles 'Rave' Ravenscourt | |
| 1953 | Innocents in Paris | Francois | |
| 1953 | Women of Twilight | Jerry Nolan | |
| 1952 | A Killer Walks | Ned Harsten | |
| 1952 | Confio em Ti | Jordie Bennett | |
| 1951 | There Is Another Sun | Mag Maguire | |
| 1951 | Scarlet Thread | Freddie | |
| 1950 | A Rosa Negra | Edmond | |
| 1950 | A Valsa Eterna | Minor Role (uncredited) | |
| 1950 | Cairo Road | Lt. Mourad | |
| 1949 | Landfall | PO Hooper | |
| 1949 | O Desertor | Detective Sergeant Lawson | |
| 1949 | The Man from Yesterday | John Matthews | |
| 1948 | House of Darkness | Francis Merryman |