| Movie | 1941 | Citizen Kane | Jedediah Leland | |
| Movie | 1942 | The Magnificent Ambersons | Eugene Morgan | |
| Movie | 1949 | The Third Man | Holly Martins | |
| Movie | 1958 | Touch of Evil | Coroner (uncredited) | |
| Movie | 1971 | Lady Frankenstein | Baron Frankenstein | |
| Movie | 1964 | Hush... Hush, Sweet Charlotte | Drew Bayliss | |
| Movie | 1949 | Under Capricorn | Sam Flusky | |
| Movie | 1980 | Heaven's Gate | The Reverend Doctor | |
| Movie | 1937 | Seeing the World: Part One - A Visit to New York, N.Y. | | |
| Movie | 1990 | Hollywood Heaven: Tragic Lives, Tragic Deaths | (archive footage) | |
| Movie | 1970 | Tora! Tora! Tora! | Henry L. Stimson | |
| Movie | 1972 | Baron Blood | Baron Otto von Kleist / Alfred Becker | |
| Movie | 1943 | Journey into Fear | Howard Graham | |
| Movie | 1944 | I'll Be Seeing You | Zachary Morgan | |
| Movie | 1943 | Shadow of a Doubt | Uncle Charlie | |
| Movie | 1952 | The Steel Trap | Jim Osborne | |
| Movie | 1953 | A Blueprint for Murder | Whitney 'Cam' Cameron | |
| Movie | 1977 | Airport '77 | Nicholas St. Downs III | |
| Movie | 1973 | Soylent Green | William R. Simonson | |
| Movie | 1946 | Duel in the Sun | Jesse McCanles | |
| Movie | 1948 | Portrait of Jennie | Eben Adams | |
| Movie | 1957 | The Halliday Brand | Daniel Halliday | |
| Movie | 1979 | Island of the Fishmen | Prof. Ernest Marvin | |
| Movie | 1956 | The Killer Is Loose | Detective Sam Wagner | |
| Movie | 1944 | Gaslight | Brian Cameron | |
| Movie | 1979 | Guyana: Crime of the Century | Richard Gable | |
| Movie | 1975 | Syndicate Sadists | Paternò | |
| Movie | 1949 | Beyond the Forest | Doctor Louis Moline | |
| Movie | 1978 | Caravans | Crandall | |
| Movie | 1944 | Since You Went Away | Lieutenant Tony Willett | |
| Movie | 1973 | F for Fake | Self | |
| Movie | 1947 | The Farmer's Daughter | Glenn Morley | |
| Movie | 1965 | The Money Trap | Dr. Horace Van Tilden | |
| Movie | 1958 | From the Earth to the Moon | Victor Barbicane | |
| Movie | 1973 | A Delicate Balance | Harry | |
| Movie | 1961 | The Last Sunset | John Breckenridge | |
| Movie | 1971 | The Abominable Dr. Phibes | Dr. Vesalius | |
| Movie | 1970 | The Grasshopper | Richard Morgan | |
| Movie | 1968 | White Comanche | Sheriff Logan | |
| Movie | 1969 | Latitude Zero | Capt. Craig McKenzie / Cmdr. Glenn McKenzie | |
| Movie | 1971 | City Beneath the Sea | Dr. Ziegler | |
| Movie | 1953 | Niagara | George Loomis | |
| Movie | 1980 | The Hearse | Walter Prichard | |
| Movie | 1951 | The Man with a Cloak | Dupin | |
| Movie | 1967 | The Hellbenders | Colonel Jonas | |
| Movie | 1950 | September Affair | David Lawrence | |
| Movie | 1941 | Lydia | Michael Fitzpatrick | |
| Movie | 1966 | The Oscar | Kenneth Regan | |
| Movie | 1972 | The Scopone Game | George | |
| Movie | 1981 | The Survivor | Priest | |
| Movie | 1977 | Twilight's Last Gleaming | Arthur Renfrew - Secretary of State | |
| Movie | 1980 | Casino | Ed Booker | |
| Movie | 1950 | Walk Softly, Stranger | Chris Hale aka Steve | |
| Movie | 1950 | Two Flags West | Col. Clay Tucker | |
| Movie | 1978 | The Perfect Crime | Sir Arthur Dundee | |
| Movie | 1973 | The Devil's Daughter | Judge Weatherby | |
| Movie | 1945 | Love Letters | Allen Quinton | |
| Movie | 1971 | Assault on the Wayne | Admiral | |
| Movie | 1956 | The Bottom of the Bottle | Pat 'P.M.' Martin | |
| Movie | 1967 | Jack of Diamonds | Ace | |
| Movie | 1951 | Half Angel | John Raymond Jr. | |
| Movie | 1991 | Frankenstein: A Cinematic Scrapbook | Baron Frankenstein (archive footage) | |
| Movie | 1972 | The Screaming Woman | George Tresvant | |
| Movie | 1965 | The Tramplers | Temple Cordeen | |
| Movie | 1968 | Gangsters '70 | Destil | |
| Movie | 1976 | A Whisper in the Dark | The Professor | |
| Movie | 1960 | The Angel Wore Red | Hawthorne | |
| Movie | 1951 | Peking Express | Michael Bachlin | |
| Movie | 2013 | Too Much Johnson | Augustus Billings | |
| Movie | 1952 | Untamed Frontier | Kirk Denbow | |
| Movie | 1943 | Hers to Hold | Bill Morley | |
| Movie | 1976 | The Lindbergh Kidnapping Case | Dr. Joseph Francis Condon | |
| Movie | 2000 | Beyond Doubt: The Making of Hitchcock's Favorite Film | Self | |
| Movie | 1961 | Hollywood: The Selznick Years | Self (uncredited) | |
| Movie | 1947 | Our American Heritage | Narrator | |
| Movie | 2018 | They'll Love Me When I'm Dead | Self (archive footage) | |
| Movie | 1978 | Last In, First Out | Foster Johnson | |
| Movie | 1968 | Alexander The Great | Antigonus | |
| Movie | 1968 | Petulia | Mr. Danner | |
| Movie | 1978 | Return to Fantasy Island | Simon Grant | |
| Movie | 1955 | Special Delivery | John Adams | |
| Movie | 1981 | Delusion | Ivar Langrock | |
| Movie | 1971 | Do You Take This Stranger? | Dr. Robert Carson | |
| Movie | 1975 | Timber Tramps | Greedy sawmill mogul | |
| Movie | 1971 | Journey to Murder | Jeff Wheeler | |
| Movie | 1967 | Some May Live | Colonel Woodward | |
| Movie | 1965 | The Great Sioux Massacre | Major Marcus A. Reno | |
| Movie | 1951 | Othello | Senator (uncredited) | |
| Movie | 1979 | Concorde Affair | Milland | |
| Movie | 1966 | Brighty of the Grand Canyon | Jim | |
| Movie | 1972 | Doomsday Voyage | Captain Jason | |
| Movie | 1979 | Churchill and the Generals | Gen. George C. Marshall | |
| Movie | 1957 | The Edge of Innocence | Robert Rainey | |
| Movie | 1953 | Egypt by Three | Narrator | |
| Movie | 1969 | The Lonely Profession | Martin Bannister | |
| Movie | 1968 | Split Second to an Epitaph | Dr. Ben Stern | |
| Movie | 1970 | Cutter's Trail | General Spalding | |
| Movie | 1976 | Mysteries of the Gods | Narrator | |
| Movie | 1973 | Police Dog | Narrator | |
| Movie | 1968 | Petulia: The Uncommon Movie | Himself | |
| Movie | 1967 | Lionpower from MGM | | |
| TV Show | 1958 | 77 Sunset Strip | | 1 |
| TV Show | 1963 | The Great Adventure | Captain Meehan | 2 |
| TV Show | 1960 | Checkmate | | 1 |
| TV Show | 1979 | Tales of the Unexpected | Lionel | 1 |
| TV Show | 1972 | The Streets of San Francisco | | 1 |
| TV Show | 1977 | The Hardy Boys / Nancy Drew Mysteries | | 1 |
| TV Show | 1953 | General Electric Theater | Paul Henty | 1 |
| TV Show | 1967 | Ironside | | 1 |
| TV Show | 1955 | Alfred Hitchcock Presents | William Callew | 1 |
| TV Show | 1961 | Bus Stop | | 1 |
| TV Show | 1958 | Westinghouse Desilu Playhouse | | 1 |
| TV Show | 1967 | Cimarron Strip | | 1 |
| TV Show | 1968 | Rowan & Martin's Laugh-In | Self | 2 |
| TV Show | 1951 | Schlitz Playhouse of Stars | | 1 |
| TV Show | 1958 | Kraft Music Hall | | 1 |
| TV Show | 1956 | Dick Powell's Zane Grey Theatre | Ben Harper | 1 |
| TV Show | 1961 | Dr. Kildare | Charles Ladovan | 1 |
| TV Show | 1956 | Telephone Time | | 1 |
| TV Show | 1959 | The DuPont Show with June Allyson | Dick Burlingame | 1 |
| TV Show | 1956 | On Trial | | 31 |
| TV Show | 1953 | Letter to Loretta | Self - Guest Host | 1 |
| TV Show | 1960 | The Barbara Stanwyck Show | Mac McClay | 1 |
| TV Show | 1953 | General Electric Theater | Captain | 1 |
| TV Show | 1953 | General Electric Theater | Private Harris | 1 |
| TV Show | 1959 | The DuPont Show with June Allyson | Charles Lawrence | 1 |
| TV Show | 1973 | The American Film Institute Salute to ... | Self | 1 |
| TV Show | 1976 | Origins of the Mafia | The Envoy | 5 |
| TV Show | 1950 | What's My Line? | Self - Mystery Guest | 1 |
| TV Show | 1955 | Alfred Hitchcock Presents | Tony Gould | 1 |
| TV Show | 1955 | Alfred Hitchcock Presents | Courtney Masterson | 1 |
| TV Show | 1971 | V.I.P. Schaukel | Self | 1 |
| TV Show | 1974 | The Rockford Files | Warner Jameson | 1 |
| TV Show | 1977 | Aspen | Horton Paine | 3 |
| TV Show | 1977 | The Love Boat | Colonel Van Ryker | 1 |
| TV Show | 1963 | Hollywood and the Stars | Narrator | 31 |
| TV Show | 1957 | Suspicion | Gregg Carey | 1 |
| TV Show | 1979 | Tales of the Unexpected | Edward | 1 |
