Actor (104 credits)
- Hollywood Out-takes and Rare Footage (1983) играет самого себя, хроника, not listed in credits
- The Challenge (1970) Dr. Nagy
- Sol Madrid (1968) Capo Riccione
- It Takes a Thief (1968) Von Wolfgang
- Lord Jim (1965) Stein
- The Man Who Bought Paradise (1965) Colonel Von Rittner
- 55 Days at Peking (1963) Dr. Steinfeldt
- Fun in Acapulco (1963) Maximillian Dauphin
- Sam Benedict (1962) Karl Messerman
- The Four Horsemen of the Apocalypse (1962) Karl von Hartrott
- Tender Is the Night (1961) Dr. Dohmler - Psychiatrist
- Scent of Mystery (1960) Baron Saradin
- The Roots of Heaven (1958) Saint Denis
- 20,000 Leagues Under the Sea (1954) Prof. Pierre Aronnax
- Screen Snapshots: Spike Jones in Hollywood (1953) играет самого себя, хроника
- Tales of Tomorrow (1951) Program ведущий, not listed in credits
- Kim (1950) Lama
- The Silver Theatre (1949)
- The Chevrolet Tele-Theatre (1948) The Doctor
- Berlin Express (1948) Dr. Bernhardt
- Whispering City (1947) Albert Frédéric
- Deadline at Dawn (1946) Gus Hoffman
- Temptation (1946) Sir Meyer Isaacson
- Address Unknown (1944) Martin Schulz
- Uncertain Glory (1944)
- Experiment Perilous (1944)
- Watch on the Rhine (1943) Kurt Muller
- Hostages (1943) Rheinhardt
- Don't Be a Sucker (1943) German Professor
- They Dare Not Love (1941) Baron von Helsing
- The Monster and the Girl (1941) W. S. Bruhl
- A Window in London (1940) Zoltini
- The Ghost Breakers (1940) Parada
- Strange Cargo (1940) Hessler
- Confessions of a Nazi Spy (1939) Dr. Kassell
- Captain Fury (1939) Francois Dupre
- The Lady Vanishes (1938) Dr. Hartz
- The Mutiny of the Elsinore (1937) Jack Pethurst
- Dinner at the Ritz (1937) Baron Philip de Beaufort
- Brief Ecstasy (1937) Prof. Paul Bernardy
- Espionage (1937) Anton Kronsky
- Ladies in Love (1936) John Barta
- Dodsworth (1936)
- The Three Musketeers (1935) Athos
- Age of Indiscretion (1935) Robert Lenhart
- I Found Stella Parish (1935) Stephan Norman
- The Casino Murder Case (1935) Philo Vance
- Glamour (1934) Victor Banki
- Affairs of a Gentleman (1934) Victor Gresham
- The Countess of Monte Cristo (1934)
- Gift of Gab (1934) The Corpse
- The Fountain (1934) Rupert von Narwitz
- I Give My Love (1934)
- Father Brown, Detective (1934) Flambeau
- Captured! (1933) Colonel Carl Ehrlich
- The Kiss Before the Mirror (1933) Walter Bernsdorf
- Little Women (1933) Prof. Bhaer
- Secret of the Blue Room (1933) Captain Walter Brink
- Sing, Sinner, Sing (1933) Phil Carida
- By Candlelight (1933) Josef
- Grand Slam (1933) Peter Stanislavsky
- Rockabye (1932) Antonie de Sola
- Thunder Below (1932) Ken
- Downstairs (1932) Albert, the Baron's Butler
- No One Man (1932) Dr. Karl Bemis
- Tomorrow and Tomorrow (1932) Dr. Nicholas Faber
- A Passport to Hell (1932) Lt. Kurt Kurtoff
- City Streets (1931) Big Fellow Maskal
- Beloved Bachelor (1931) Michael Morda
- Women Love Once (1931) Julien Fields
- Unfaithful (1931) Colin Graham
- Strictly Dishonorable (1931) Gus
- The Vice Squad (1931) Stephen Lucarno
- Working Girls (1931) Dr. Joseph Von Schrader
- Grumpy (1930) Berci
- The Benson Murder Case (1930) Adolph Mohler
- Slightly Scarlet (1930) Malatroff
- The Devil's Holiday (1930) Dr. Reynolds
- Behind the Make-Up (1930) Boris
- Young Eagles (1930)
- The Right to Love (1930) Eric
- Anybody's Woman (1930) Gustave Saxon
- Illusion (1929) Count Fortuny
- Halfway to Heaven (1929) Nick Pogli
- The Wolf of Wall Street (1929) David Tyler
- The Shopworn Angel (1928) Bailey
- The Woman from Moscow (1928) Vladimir - his son
- Manhattan Cocktail (1928) Boris Renov
- Hot News (1928) James Clayton
- Two Lovers (1928) Don Ramon de Linea
- Loves of an Actress (1928) Dr. Durande
- Night Watch (1928) Captain Corlaix
- Three Sinners (1928) Count Dietrich Wallentin
- Das unbekannte Morgen (1923)
- Az egyhuszasos lány (1923)
- Samson und Delila (1922) Ettore Ricco, tenor
- Tláni, az elvarázsolt hercegasszony (1920)
- Masamód (1920) A festõ
- Udvari levegö (1918)
- Sphynx (1918)
- Vorrei morir (1918)
- Heartsong (1917)
- The Vanishing Woman (1917) Dr. Hartz
- A Man of the Earth (1915)
