| Ano | Nota | Título | Personagem |
|---|---|---|---|
| 2000 | John Wayne - Ein Leben für den Film | Self (archive footage) | |
| 1988 | The Star Trek Saga: From One Generation to the Next | Captain Christopher Pike (archive footage) | |
| 1971 | Directed by John Ford | (archive footage) | |
| 1969 | ¡Viva América! | Frank Mannata | |
| 1969 | Super Colt 38 | Billy Hayes | |
| 1968 | Frau Wirtin hat auch einen Grafen | Count Enrico | |
| 1968 | Face a Face com o Diabo | Joe Collins | |
| 1968 | O Marujo Tremendão | Lt. (J.G.) Lyman P. Jones | |
| 1967 | Os Bravos Não se Rendem | Captain Benteen | |
| 1967 | Joe Navidad | Joe Novak | |
| 1967 | Diário de um Homem Casado | Technical Adviser (Mountain Climber) | |
| 1967 | A Witch Without a Broom | Garver Logan | |
| 1966 | Star Trek: The Menagerie | Captain Christopher Pike (archive footage) | |
| 1966 | Dimensão 5 | Justin Power | |
| 1965 | Brainstorm | Jim Grayam | |
| 1965 | Onkel Toms Hütte | (voice) (uncredited) | |
| 1965 | Star Trek: The Cage | Christopher Pike | |
| 1965 | Joaquín Murrieta | Joaquín Murrieta | |
| 1963 | The Man from Galveston | Timothy Higgins | |
| 1963 | Oro per i Cesari | Lacer | |
| 1962 | O Mais Longo dos Dias | Sgt. (later Lt.) John H. Fuller | |
| 1962 | À Beira do Abismo | George R. Tweed | |
| 1961 | O Rei dos Reis | Jesus | |
| 1961 | Beco Sem Saída | Matt Jameson | |
| 1960 | Key Witness | Fred Morrow | |
| 1960 | Do Inferno para a Eternidade | Guy Gabaldon | |
| 1960 | Audazes e Malditos | Lt. Tom Cantrell | |
| 1959 | Disneyland '59 | Self | |
| 1958 | O Último Hurrah | Adam Caulfield | |
| 1958 | Mardi Gras | Himself (uncredited) | |
| 1958 | In Love and War | Sgt. Nico Kantaylis | |
| 1957 | Count Five and Die | Captain Bill Ranson | |
| 1957 | A Mulher do Próximo | David Martin | |
| 1957 | The Way to the Gold | Joe Mundy | |
| 1957 | Quem Foi Jesse James? | Frank James | |
| 1956 | Arma para um Covarde | Bless Keough | |
| 1956 | Têmpera de Bravos | William A. Fuller | |
| 1956 | Behind the Scenes with Fess Parker | - | |
| 1956 | Rastros de Ódio | Martin Pawley | |
| 1956 | A Borda da Morte | Thad Anderson | |
| 1956 | Amor, Prelúdio de Morte | Gordon Grant | |
| 1955 | As Sete Cidades de Ouro | Matuwir | |
| 1955 | Seven Angry Men | Owen Brown | |
| 1955 | A Lei do Bravo | Little Dog | |
| 1954 | A Roleta Fatal | Johnny Colt | |
| 1954 | A Princesa do Nilo | Prince Haidi | |
| 1953 | O Marinheiro do Rei | Signalman Andrew 'Canada' Brown | |
| 1952 | Dreamboat | Bill Ainslee | |
| 1952 | Lure of the Wilderness | Ben Tyler | |
| 1952 | Belles on Their Toes | Bob Grayson | |
| 1952 | Montanhas Ardentes | Edward J. (Ed) Miller | |
| 1951 | Take Care of My Little Girl | Chad Carnes | |
| 1951 | Horas Intermináveis | Danny Klempner | |
| 1951 | Call Me Mister | The Kid | |
| 1951 | Homens-Rãs | Pappy Creighton |