| Year | Title | Role | Notes |
| 1937 | The Rhythm Party | Party Guest | Short filmUncredited |
| Exclusive | Reporter | Uncredited |
| 1940 | Lady with Red Hair | Mr. Williams | Uncredited |
| 1941 | High Sierra | Louis Mendoza | |
| Knockout | Tom Rossi | |
| Kisses for Breakfast | Chet Oakley | |
| The Perfect Snob | Mike Lord | |
| 1942 | Manila Calling | Jeff Bailey | |
| Life Begins at Eight-Thirty | Robert Carter | |
| 1943 | Wintertime | Freddy Austin | |
| 1945 | A Song to Remember | Frédéric Chopin | |
| A Thousand and One Nights | Aladdin | |
| Leave Her to Heaven | Richard Harland | |
| 1946 | The Bandit of Sherwood Forest | Robert of Nottingham | |
| Centennial Summer | Philippe Lascalles | |
| 1947 | The Homestretch | Jock Wallace | |
| Forever Amber | Bruce Carlton | |
| It Had to Be You | George McKesson/Johnny Blaine | |
| Stairway for a Star | Jimmy Banks | Utilized scenes from an unfinished 1940 film |
| 1948 | The Walls of Jericho | Dave Connors | |
| Road House | Pete Morgan | |
| 1949 | Shockproof | Griff Marat | |
| 1950 | Two Flags West | Captain Mark Bradford | |
| 1952 | The Greatest Show on Earth | The Great Sebastian | |
| At Sword's Point | D'Artagnan Jr. | |
| California Conquest | Don Arturo Bordega | |
| Operation Secret | Peter Forrester | |
| 1953 | Treasure of the Golden Condor | Jean-Paul | |
| Main Street to Broadway | Himself | |
| Saadia | Si Lahssen | |
| 1954 | Star of India | Pierre St. Laurent | |
| Woman's World | Bill Baxter | |
| Passion | Juan Obreón | |
| 1955 | The Big Combo | Lieutenant Leonard Diamond | Also associate producer |
| The Scarlet Coat | Major John Boulton | |
| Storm Fear | Charlie Blake | Also director and producer |
| 1956 | Hot Blood | Stephano Torino | |
| Beyond Mombasa | Matt Campbell | |
| 1957 | Omar Khayyam | Omar Khayyam | |
| The Devil's Hairpin | Nick Jargin | Also director, writer and producer |
| 1958 | Maracaibo | Vic Scott | Also director and producer |
| 1959 | Edge of Eternity | Les Martin |
| 1961 | Constantine and the Cross | Constantine | |
| 1963 | Lancelot and Guinevere | Sir Lancelot | Also director, writer (as Jefferson Pascal) and producer |
| 1965 | The Naked Prey | Man | Also director and producer |
| 1967 | Beach Red | Captain MacDonald | Also director, writer (as Jefferson Pascal) and producer |
| 1969 | The Comic | Frank Powers | |
| 1970 | No Blade of Grass | Radio Voice | Also director, writer (as Jefferson Pascal) and producer |
| 1972 | Gargoyles | Mercer Boley | |