Filmography
| Year | Title | Role |
| 1979 | BATTLESTAR GALACTICA Trilogy | Sire Uri |
| 1978 | Oil | The Boss |
| 1978 | The Pajama Girl Case | Inspector Thompson |
| 1977 | The Uncanny | Frank Richards |
| 1976 | The Last Tycoon | Fleishacker |
| 1976 | The Swiss Conspiracy | Johann Hurtil |
| 1975 | Escape to Witch Mountain | Aristotle Bolt |
| 1972 | The Thing With Two Heads | Maxwell Kirshner |
| 1972 | Frogs | Jason Crockett |
| 1972 | Big Game on the Big Screen | Prof. Pete Handley |
| 1971 | Black Noon | Caleb Hobbs |
| 1970 | Love Story (1970) | Oliver Barrett III |
| 1963 | The Man With the X-Ray Eyes | Dr. James Xavier |
| 1962 | Panic in Year Zero | Harry Baldwin |
| 1962 | The Premature Burial | Guy Carrell |
| 1957 | The River's Edge | Nardo Denning |
| 1956 | Three Brave Men | Joe DiMarco |
| 1955 | The Girl in the Red Velvet Swing | Stanford White |
| 1954 | Dial M for Murder | Tony Wendice |
| 1952 | Ella Fitzgerald: Something To Live For | Alan Miller |
| 1951 | Circle of Danger | Clay Douglas |
| 1951 | Rhubarb | Eric Yeager |
| 1950 | A Life of Her Own | Steve Harleigh |
| 1949 | Alias Nick Beal | Nick Beal |
| 1949 | It Happens Every Spring | Prof. Vernon K. Simpson/King Kelly |
| 1948 | The Big Clock | George Stroud |
| 1948 | So Evil My Love | Mark Bellis |
| 1947 | Golden Earrings | Col. Ralph Denistoun |
| 1945 | The Lost Weekend | Don Birnam |
| 1945 | Kitty | Sir Hugh Marcy |
| 1944 | Till We Meet Again (1944) | John |
| 1944 | Lady in the Dark | Charley Johnson |
| 1944 | MINISTRY OF FEAR - NOIR NIGHTS | Stephen Neale |
| 1943 | Forever and a Day (1943) | Lt. William `Bill' Trimble |
| 1942 | The Major and the Minor | Major Kirby |
| 1942 | Reap the Wild Wind | Stephen "Steve" Tolliver |
| 1942 | Are Husbands Necessary? | George Cugat |
| 1940 | Irene | Donald "Don" Marshall |
| 1939 | Beau Geste (1966) | John Geste |
| 1939 | Everything Happens at Night | Geoffrey Thompson |
| 1938 | Her Jungle Love | Bob Mitchell |
| 1938 | Men With Wings | Scott Barnes |
| 1937 | Easy Living | John Ball Jr. |
| 1936 | Three Smart Girls | Lord Michael Stuart |
| 1936 | The Jungle Princess | Christopher Powell |
| 1935 | The Gilded Lily | Charles Gray |
| 1935 | Next Time We Love | Tommy Abbott |
| 1934 | Bolero | Lord Robert Coray |
| 1934 | We're Not Dressing | Prince Michael |
| 1932 | Payment Deferred | James Medland |
| 1931 | Strangers May Kiss | Third Admirer (uncredited) |
| 1931 | Blonde Crazy | Joe Reynolds |
