1968To Die in Paris— General Ludmer
1967The Spy in the Green Hat— Dr. Heinrich von Kronen
1966Esrar Perdesi— Gustav Lindt
1966Too Many Thieves— Bulanerti
1960The Dybbuk— Rabbi Azrael
1959Judgment at Nuremberg— Dr. Wickert
1953Sins of Jezebel— Naboth
1953The Veils of Bagdad— Kaffar
1952My Pal Gus— Karl
1951Sirocco— Flophouse Proprietor
1951The Great Caruso— Alfredo Brazzi
1951Journey Into Light— 'Doc' Thorssen
1950The Killer That Stalked New York— Dr. Cooper
1950Mystery Submarine— Adolph Guernitz
1949Jolson Sings Again— Cantor Yoelson
1949The Lovable Cheat— Violette
1949The Fighting O'Flynn— Hendrigg
1949There's a Girl in My Heart— Professor Joseph Kroner
1949The Great Sinner— Doctor
1948To the Ends of the Earth— Nicholas Sokim
1948Sealed Verdict— Jakob Meyersohn
1947Cigarette Girl— Otto
1946Şeytanın Kızı Gilda— German Cartel Member
1946Blondie Knows Best— Dr. Titus
1946The Jolson Story— Cantor Yoelson
1946The Devil's Mask— Dr. Karger
1946Renegades— Jackorski
1946The Return of Monte Cristo— Judge Lafitte
1945Counter-Attack— Mueller
1945Prison Ship— Professor
1944The Master Race— Schmidt (as Louis Donath)
1944The Hitler Gang— Gustav von Kahr
1943Hangmen Also Die!— Schirmer
1943The Strange Death of Adolf Hitler— Adolf Hitler / Franz Huber
1943This Land Is Mine— German Captain
1943Above Suspicion— Gestapo Officer in Schultz's Laboratory (Uncredited)
1943Margin for Error— Hitler's Voice
1942Lady from Chungking— Hans Gruber
1942The Secret Code— Nazi Prof. Metzger
1942Reunion in France— Desk Clerk in Hotel (uncredited)
1932Mädchen zum Heiraten
1921Theodor Herzl, der Bannerträger des jüdischen Volkes— Prinz Eugen
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