| Ano | Nota | Título | Personagem |
|---|---|---|---|
| 2020 | 'Fail-Safe' and the Cold War | Self (archive footage) | |
| 2000 | Revisiting 'Fail-Safe' | Self | |
| 2000 | Buñuel en Hollywood | Self | |
| 1998 | The Rat Pack | Joe Kennedy | |
| 1993 | Amar Trair & Roubar | Hamilton Fisk | |
| 1990 | RoboCop 2 | The Old Man | |
| 1988 | A Waltz Through the Hills | Uncle Tom | |
| 1987 | Os Vivos e os Mortos | Mr. Browne | |
| 1987 | RoboCop - O Policial do Futuro | The Old Man | |
| 1986 | Dark Mansions | Alexander Drake | |
| 1986 | Garotos do High Society | Judge Sternhill | |
| 1984 | O Último Guerreiro das Estrelas | Grig | |
| 1982 | Halloween III: A Noite das Bruxas | Conal Cochran | |
| 1981 | Artemis '81 | Albrecht Von Drachenfels | |
| 1981 | Death Ray 2000 | The Director | |
| 1979 | Mark Twain: Beneath the Laughter | Mark Twain | |
| 1977 | Deadly Game | Colonel Edward Stryker | |
| 1977 | MacArthur, O General Rebelde | President Roosevelt | |
| 1977 | Good Against Evil | Father Kemschler | |
| 1976 | Banjo Hackett: Roamin' Free | Tip Conaker | |
| 1976 | The Quest: The Longest Drive | Mathew Hatcher | |
| 1974 | Jennie: Lady Randolph Churchill | Leonard Jerome | |
| 1974 | Sementes de Tamarindo | Fergus Stephenson | |
| 1972 | Receita: Violência | J.D. Randall | |
| 1972 | The People | Sol Diemus | |
| 1970 | Waterloo | Marshal Michel Ney | |
| 1969 | A Escrava da Alucinação | Charles Winthrop | |
| 1969 | 100 Rifles | Steven Grimes | |
| 1968 | Como Roubar o Mundo | Prof. David Garrow | |
| 1964 | Limite de Segurança | Brig. Gen. Warren A. Black | |
| 1962 | The Cabinet of Caligari | Caligari / Paul | |
| 1961 | King of the Roaring 20's – The Story of Arnold Rothstein | Detective Phil Butler | |
| 1960 | One Foot in Hell | Sir Harry Ivers | |
| 1960 | Até o Amargo Fim | Don McGinnis | |
| 1959 | Ódio Destruidor | Judge Millard Isham | |
| 1959 | Imitação da Vida | David Edwards | |
| 1958 | Home Before Dark | Arnold Bronn | |
| 1957 | That Woman Opposite | Dermot Kinross | |
| 1957 | The Blackwell Story | Dr. Keller | |
| 1955 | A Rainha Tirana | Lord Derry | |
| 1955 | No Reinado da Guilhotina | Brisquet | |
| 1955 | Hunters of the Deep | Narrator | |
| 1954 | Rifles Para Bengala | Capt. Ronald Blaine (as Daniel O'Herlihy) | |
| 1954 | O Escudo Negro de Falworth | Prince Hal of Wales | |
| 1954 | As Aventuras de Robinson Crusoé | Robinson Crusoe | |
| 1953 | Sword of Venus | Danglars | |
| 1952 | Invasion, U.S.A. | Mr. Ohman | |
| 1952 | Operation Secret | Lt. Duncan | |
| 1952 | Actors and Sin | Alfred O'Shea / Narrator (segment Actor's Blood) | |
| 1952 | At Sword's Point | Aramis Jr. | |
| 1951 | The Blue Veil | Hugh Williams | |
| 1951 | A Raposa do Deserto | Commando Captain (uncredited) | |
| 1951 | The Highwayman | - | |
| 1951 | Três Grandes Amigos | Sgt.Murphy | |
| 1950 | The Iroquois Trail | Lt. Blakely | |
| 1948 | Kidnapped | Alan Breck | |
| 1948 | Macbeth: Reinado de Sangue | Macduff | |
| 1948 | Aves de Rapina | Duke | |
| 1947 | Condenado | Nolan | |
| 1947 | Hungry Hill | Harry Brodrick |