Filmography
| Year | Title | Role |
| 1967 | Hillbillys in a Haunted House | Gregor |
| 1966 | Planet of Vampires | Dr. Farraday |
| 1966 | The Ghost in the Invisible Bikini (1966) | Reginald Ripper |
| 1965 | Voyage to a Prehistoric Planet | Prof. Hartman |
| 1964 | The Comedy of Terrors | Mr. John F. Black |
| 1962 | The Magic Sword | Lodac |
| 1962 | Tales of Terror | Carmichael |
| 1958 | The Last Hurrah | Norman Cass, Sr., Banker |
| 1955 | The Court Jester | Sir Ravenhurst |
| 1955 | We're No Angels | Andre Trochard |
| 1949 | The Adventures of Ichabod and Mr. Toad | Narrator |
| 1946 | Terror by Night | Sherlock Holmes |
| 1946 | Prelude to Murder | Sherlock Holmes |
| 1945 | The Woman in Green | Sherlock Holmes |
| 1945 | Pursuit to Algiers | Sherlock Holmes |
| 1945 | Sherlock Holmes and the House of Fear | Sherlock Holmes |
| 1944 | The Pearl of Death | Sherlock Holmes |
| 1944 | The Scarlet Claw | Sherlock Holmes |
| 1944 | Bathing Beauty | George Adams |
| 1944 | Frenchman's Creek | Lord Rockingham |
| 1943 | Sherlock Holmes Faces Death | Sherlock Holmes |
| 1943 | Sherlock Holmes and the Spider Woman | Sherlock Holmes |
| 1943 | Sherlock Holmes in Washington | Sherlock Holmes |
| 1942 | Secret Weapon | Sherlock Holmes |
| 1941 | The Mad Doctor | Dr. George Sebastian/Dr. Frederick Langamann |
| 1940 | Rhythm on the River | Oliver Courtney |
| 1939 | The Adventures of Sherlock Holmes | Sherlock Holmes |
| 1939 | Son of Frankenstein | Baron Wolf von Frankenstein |
| 1939 | Rio (1939) | Paul Reynard |
| 1938 | The Adventures of Robin Hood | Sir Guy of Gisbourne |
| 1938 | If I Were King | King Louis XI |
| 1938 | Dawn Patrol (1938) | Major Brand |
| 1936 | The Garden of Allah | Count Ferdinand Anteoni |
| 1936 | Romeo and Juliet HD Opera | Tybalt |
| 1935 | A Tale of Two Cities (1935) | Marquis St. Evremonde |
| 1935 | Captain Blood | Levasseur |
| 1935 | David Copperfield (2000) | Mr. Murdstone |
| 1935 | Anna Karenina (1935) | Alexei Alexandrovitch Karenin |
| 1935 | House of Menace | Henry Abbott |
