Credits

• 2003 · Complicated Women as Self (archive footage)
• 1983 · Hollywood Out-takes and Rare Footage as Self (archive footage) (uncredited)
• 1970 · The Challenge as Dr. Nagy
• 1968 · The Name of the Game as Baron Vincennes
• 1968 · Sol Madrid as Capo Riccione
• 1965 · The F.B.I. as Ambassador Korvin
• 1965 · The F.B.I. as Anton Dieter
• 1965 · Run for Your Life as Dr. Werner
• 1965 · Lord Jim as Stein
• 1963 · Fun in Acapulco as Maximillian Dauphin
• 1963 · Bob Hope Presents the Chrysler Theatre as
• 1963 · 55 Days at Peking as Dr. Steinfeldt
• 1962 · Sam Benedict as
• 1962 · The Four Horsemen of the Apocalypse as Karl von Hartrott
• 1962 · Tender Is the Night as Dr. Dohmler
• 1960 · Scent of Mystery as Baron Saradin
• 1958 · The Roots of Heaven as Saint Denis
• 1956 · Playhouse 90 as Ernst Janning
• 1955 · Alfred Hitchcock Presents as Dr. Hartz (archive footage) (uncredited)
• 1955 · The Thief as Charles Lagarde
• 1954 · 20,000 Leagues Under the Sea as Prof. Pierre Arronax
• 1954 · Operation Undersea as Self
• 1953 · The United States Steel Hour as Charles Lagarde
• 1950 · Kim as Lama
• 1950 · Lux Video Theatre as Franz Kralik
• 1950 · Lux Video Theatre as Dr. Leitner
• 1950 · Sure As Fate as
• 1950 · Robert Montgomery Presents as
• 1948 · Studio One as Captain Lindemann
• 1948 · Studio One as Gabbo the Great
• 1948 · Berlin Express as Dr. Bernhardt
• 1947 · Whispering City as Albert Frédéric
• 1946 · Temptation as Sir Meyer Isaacson
• 1946 · Deadline at Dawn as Gus Hoffman
• 1944 · Experiment Perilous as Nicholas 'Nick' Bederaux
• 1944 · Address Unknown as Martin Schulz
• 1944 · Uncertain Glory as Inspector Marcel Bonet
• 1943 · Watch on the Rhine as Kurt Müller
• 1943 · Hostages as Reinhardt
• 1943 · Don't Be a Sucker! as Hungarian Professor
• 1941 · They Dare Not Love as Baron von Helsing
• 1941 · The Monster and the Girl as W. S. Bruhl
• 1940 · The Ghost Breakers as Parada
• 1940 · A Window in London as Louie Zoltini
• 1940 · The Chinese Bungalow as Yuan Sing
• 1940 · Strange Cargo as Hessler
• 1939 · Captain Fury as François Dupré
• 1939 · Confessions of a Nazi Spy as Dr. Kassell
• 1938 · The Lady Vanishes as Dr. Hartz
• 1937 · Dinner at the Ritz as Baron Philip de Beaufort
• 1937 · The Mutiny Of The Elsinore as Jack Pethurst
• 1937 · Brief Ecstasy as Prof. Paul Bernardy
• 1937 · Espionage as Anton Kronsky
• 1936 · Breakdowns of 1936 as Self
• 1936 · Ladies In Love as John Barta
• 1936 · Dodsworth as Arnold Iselin
• 1935 · I Found Stella Parish as Stephan Norman
• 1935 · The Three Musketeers as Athos
• 1935 · Age of Indiscretion as Robert Lenhart
• 1935 · The Casino Murder Case as Philo Vance
• 1934 · Father Brown, Detective as Flambeau
• 1934 · Gift of Gab as The Corpse
• 1934 · The Fountain as Rupert von Marwitz
• 1934 · I Give My Love as Paul Vadja
• 1934 · Affairs of a Gentleman as Victor Gresham
• 1934 · Glamour as Victor Banki
• 1934 · The Countess of Monte Cristo as Rumowski
• 1933 · By Candlelight as Josef
• 1933 · Little Women as Prof. Bhaer
• 1933 · Captured! as Colonel Carl Ehrlich
• 1933 · Sing, Sinner, Sing as Phil Carida
• 1933 · Secret of the Blue Room as Captain Walter Brink
• 1933 · The Kiss Before the Mirror as Walter Bernsdorf
• 1933 · Grand Slam as Peter Stanislavsky
• 1932 · Rockabye as Antonie 'Tony' de Sola
• 1932 · A Passport to Hell as Lt. Kurt Kurtoff
• 1932 · Downstairs as Albert
• 1932 · Thunder Below as Ken
• 1932 · Tomorrow and Tomorrow as Dr. Nicholas Faber
• 1932 · No One Man as Dr. Karl Bemis
• 1931 · Working Girls as Dr. Joseph Von Schrader
• 1931 · Strictly Dishonorable as Tino Caraffa, aka "Gus" Diruvo
• 1931 · The Beloved Bachelor as Michael Morda
• 1931 · The Vice Squad as Stephen Lucarno
• 1931 · City Streets as Big Fellow Maskal
• 1931 · Unfaithful as Colin Graham
• 1930 · The Right to Love as Eric
• 1930 · Anybody's Woman as Gustave Saxon
• 1930 · Grumpy as Berci
• 1930 · The Devil's Holiday as Dr. Reynolds
• 1930 · The Benson Murder Case as Adolph Mohler
• 1930 · Young Eagles as Von Baden
• 1930 · Slightly Scarlet as Malatroff
• 1930 · Behind the Make-Up as Boris
• 1929 · Half Way to Heaven as Nick Pogli
• 1929 · The Wolf of Wall Street as David Tyler
• 1928 · The Shopworn Angel as Bailey
• 1928 · Manhattan Cocktail as Boris Renov
• 1928 · The Woman from Moscow as The General's Son Vladimir
• 1928 · Night Watch as
• 1928 · Loves of an Actress as Dr. Durande
• 1928 · Hot News as James Clayton
• 1928 · Three Sinners as Count Dietrich Wallentin
• 1928 · Two Lovers as Don Ramon de Linea
• 1924 · The Half of a Boy as Gáthy Lõrinc (as Lukács Pál)
• 1923 · Egy dollár as
• 1922 · Samson und Delila as Ettore Ricco, the Tenor
• 1919 · Az összeesküvök as
• 1918 · Sphynx as Gordon-Philips György herceg (as Lukács Pál)
• 1918 · Soldiers of the Emperor as