Filmography
| Year | Title | Role |
| 1965 | Lord Jim | Stein |
| 1963 | 55 Days at Peking | Dr. Steinfeldt |
| 1963 | Fun in Acapulco | Maximillian Dauphin |
| 1962 | The Four Horsemen of the Apocalypse | Karl von Hartrott |
| 1962 | Tender Is the Night | Dr. Dohmler |
| 1960 | Holiday in Spain | Baron Saradin |
| 1958 | The Roots of Heaven | Saint Denis |
| 1954 | 20,000 Leagues Under the Sea (1997) | Prof. Pierre Arronax |
| 1948 | Berlin Express | Dr. Bernhardt |
| 1947 | Whispering City | Albert Frédéric |
| 1946 | Deadline at Dawn | Gus Hoffman |
| 1944 | Experiment Perilous | Nick Bederaux |
| 1944 | Address Unknown | Martin Schulz |
| 1944 | Uncertain Glory | Inspector Marcel Bonet |
| 1943 | Watch on the Rhine | Kurt Muller |
| 1941 | The Monster and the Girl | W. S. Bruhl |
| 1940 | The Ghost Breakers | Parada |
| 1940 | Strange Cargo | Hessler |
| 1939 | Confessions of a Nazi Spy | Dr. Karl F. Kassel |
| 1938 | The Lady Vanishes | Dr. Hartz of Prague |
| 1936 | Dodsworth | Arnold Iselin |
| 1936 | Ladies in Love | John Barta |
| 1935 | Father Brown, Detective | Flambeau |
| 1935 | Age of Indiscretion | Robert Lenhart |
| 1934 | Affairs of A Gentleman | Victor Gresham |
| 1934 | By Candlelight | Josef |
| 1933 | Little Women (1933) | Prof. Bhaer |
| 1933 | Secret of the Blue Room | Captain Walter Brink |
| 1933 | Rockabye | Antoine De Sola |
| 1932 | Downstairs | Albert |
| 1931 | Strictly Dishonorable | Gus |
| 1931 | City Streets | Big Fellow Maskal |
| 1930 | The Devil's Holiday | Dr. Reynolds |
| 1930 | Anybody's Woman | Gustave Saxon |
| 1930 | Young Eagles | Von Baden |
| 1930 | Grumpy | Berci |
