| Movie | 1964 | Emil and the Detectives | Baron | |
| Movie | 1944 | The Princess and the Pirate | La Roche | |
| Movie | 1951 | People Will Talk | Prof. Barker | |
| Movie | 1972 | Treasure Island | Squire Trelawney | |
| Movie | 1961 | Come September | Maurice Clavell | |
| Movie | 1947 | Riff-Raff | Eric Molinar | |
| Movie | 1943 | The Fallen Sparrow | Dr. Christian Skaas | |
| Movie | 1947 | Born to Kill | Matthew Arnett | |
| Movie | 1944 | Lifeboat | Willi | |
| Movie | 1949 | The Inspector General | Yakov | |
| Movie | 1948 | The Pirate | Don Pedro Vargas | |
| Movie | 1971 | Black Beauty | Hackenschmidt | |
| Movie | 1962 | The Wonderful World of the Brothers Grimm | Stossel | |
| Movie | 1945 | Cornered | Melchior Incza | |
| Movie | 1951 | Bedtime for Bonzo | Professor Hans Neumann | |
| Movie | 1947 | Sinbad the Sailor | Melik | |
| Movie | 1944 | Step Lively | Joe Gribble | |
| Movie | 1942 | Once Upon a Honeymoon | Baron Franz Von Luber | |
| Movie | 1943 | This Land Is Mine | Major Erich von Keller | |
| Movie | 1953 | Call Me Madam | August Tantinnin | |
| Movie | 1924 | Mein Leopold | | |
| Movie | 1924 | Michael | Michael | |
| Movie | 1970 | The Juggler of Notre Dame | The Innkeeper | |
| Movie | 1945 | The Spanish Main | Don Juan Alvarado | |
| Movie | 1950 | The Yellow Cab Man | Dr. Byron Dokstedder | |
| Movie | 1968 | Dr. Coppelius | Dr. Coppelius | |
| Movie | 1954 | The Steel Cage | Louis, the Prison Chef, segment "The Chef" | |
| Movie | 1944 | Till We Meet Again | Vitrey, The Mayor | |
| Movie | 1953 | White Witch Doctor | Huysman | |
| Movie | 1959 | The Miracle | Flaco | |
| Movie | 1969 | A Hundred-Odd Years from Now | | |
| Movie | 1964 | Wonderful Life | Lloyd Davis | |
| Movie | 1957 | Ten Thousand Bedrooms | Papa Martelli | |
| Movie | 1965 | A Very Special Favor | Etienne | |
| Movie | 1965 | Twenty-Four Hours to Kill | Malouf | |
| Movie | 1966 | Congress of Love | Der 'Ewige Wiener' | |
| Movie | 1968 | Heidi | Father Richter | |
| Movie | 1950 | Spy Hunt | Doctor Stahl | |
| Movie | 1967 | The Caper of the Golden Bulls | Antonio Gonzales | |
| Movie | 1932 | Spione im Savoy-Hotel | Kurt | |
| Movie | 1953 | Confidentially Connie | Emil Spangenberg | |
| Movie | 1927 | Addio giovinezza! | | |
| Movie | 1922 | Sodom and Gomorrah | Eduard Harber - Student am Cambridge-Lyzeum / Ein Goldschmied von Galiläa | |
| Movie | 1976 | The Mysterious House of Dr. C. | Dr. Coppelius | |
| Movie | 1945 | Salome, Where She Danced | Dimitrioff | |
| Movie | 1950 | Bud Abbott and Lou Costello in the Foreign Legion | Sgt. Axmann | |
| Movie | 1926 | Grüß mir das blonde Kind am Rhein | | |
| Movie | 1957 | Pinocchio | Gepetto | |
| Movie | 1926 | Aus des Rheinlands Schicksalstagen | Walter Thiermann | |
| Movie | 1925 | O alte Burschenherrlichkeit | | |
| Movie | 1926 | Junges Blut | Oberprimaner | |
| Movie | 1927 | The Long Intermission | Ottokar | |
| Movie | 1928 | Almenrausch und Edelweiss | Mentel | |
| Movie | 1927 | Die Lorelei | | |
| Movie | 1927 | The Right to Live | | |
| Movie | 1927 | Ehegeheimnisse | | |
| Movie | 1928 | Ledige Mütter | | |
| Movie | 1963 | A Cry of Angels | | |
| Movie | 1927 | Liebe geht seltsame Wege | | |
| Movie | 1929 | Eros in Ketten | | |
| Movie | 1929 | Osudné noci | | |
| Movie | 1968 | The Legend of Robin Hood | Friar Tuck | |
| TV Show | 1961 | Cain's Hundred | Arnie Grote | 1 |
| TV Show | 1966 | Batman | The Clock King | 2 |
| TV Show | 1962 | The Merv Griffin Show | Self | 4 |
| TV Show | 1952 | Omnibus | | 2 |
| TV Show | 1948 | Studio One | | 3 |
| TV Show | 1951 | Hallmark Hall of Fame | Mr. Reallybig | 1 |
| TV Show | 1960 | Outlaws | | 1 |
| TV Show | 1959 | Rawhide | Lazio Tzgorni | 1 |
| TV Show | 1968 | Rowan & Martin's Laugh-In | Self (uncredited) | 2 |
| TV Show | 1951 | Schlitz Playhouse of Stars | | 1 |
| TV Show | 1955 | The 20th Century Fox Hour | Emil Markheim | 1 |
| TV Show | 1956 | The Dinah Shore Chevy Show | Self | 1 |
| TV Show | 1949 | Suspense | Dr. Potterton / Richard Morley | 1 |
| TV Show | 1950 | Robert Montgomery Presents | Krisons Ringo | 1 |
| TV Show | 1951 | The Name's the Same | | 21 |
| TV Show | 1970 | Filmgeschichte(n) aus Österreich | Self | 1 |
| TV Show | 1962 | The Tonight Show Starring Johnny Carson | Self | 5 |
| TV Show | 1961 | Dr. Kildare | Dr. Max Jurgens | 1 |
| TV Show | 1956 | Telephone Time | | 1 |
| TV Show | 1960 | The Chevy Mystery Show | Host | 18 |
| TV Show | 1953 | Letter to Loretta | Emil Kronsteidt | 1 |
| TV Show | 1958 | 77 Sunset Strip | Oskar Pauker | 4 |
| TV Show | 1972 | Assignment: Vienna | Tandler | 1 |
| TV Show | 1948 | The Ed Sullivan Show | Self | 1 |
| TV Show | 1948 | Studio One | Lev Simon | 1 |
| TV Show | 1951 | Hallmark Hall of Fame | George Frederic Handel | 1 |
| TV Show | 1959 | The Big Party | Self | 1 |
| TV Show | 1949 | Suspense | Frank Cadwallader | 1 |
| TV Show | 1949 | Suspense | | 3 |
| TV Show | 1977 | The Love Boat | Marcel Locksmith | 2 |
| TV Show | 1950 | What's My Line? | Self | 1 |
| TV Show | 1956 | Tony Awards | Self - Presenter | 1 |
| TV Show | 1957 | Tonight Starring Jack Paar | Self | 7 |
| TV Show | 1961 | The Mike Douglas Show | Self | 5 |
| TV Show | 1961 | The Mike Douglas Show | Self - Co-Host | 5 |
