| Movie | 1955 | The Goofy Success Story | J.B. (voice) | |
| Movie | 1977 | The Hobbit | Thorin (voice) | |
| Movie | 1957 | The Liberty Story | Thomas Jefferson | |
| Movie | 1953 | Peter Pan | Captain Hook / Mr. Darling (voice) | |
| Movie | 1942 | Blondie's Blessed Event | George Wickley | |
| Movie | 1943 | Journey into Fear | Swami magician | |
| Movie | 1956 | Bus Stop | Life Magazine Photographer | |
| Movie | 1964 | The Patsy | Prof. Mulerr | |
| Movie | 1953 | The 5,000 Fingers of Dr. T. | Dr. Terwilliker | |
| Movie | 1946 | The Reckless Driver | Wally Walrus (archive sound) | |
| Movie | 1955 | Davy Crockett, King of the Wild Frontier | Thimblerig | |
| Movie | 1952 | Big Jim McLain | Robert Henried | |
| Movie | 1970 | Horton Hears a Who! | Narrator / Horton / Dr. H. Hoovey (voice) | |
| Movie | 1943 | Crazy House | Roco | |
| Movie | 1942 | Underground Agent | Hugo | |
| Movie | 1951 | I'll See You in My Dreams | William Rossiter (uncredited) | |
| Movie | 1953 | The Twonky | Kerry West | |
| Movie | 1947 | The Senator Was Indiscreet | Waiter | |
| Movie | 2005 | Once Upon a Halloween | Captain Hook | |
| Movie | 1976 | The Shaggy D.A. | Prof. Whatley | |
| Movie | 1943 | The Fly In The Ointment | Spider | |
| Movie | 1943 | Duty and the Beast | Hunter | |
| Movie | 1959 | 1001 Arabian Nights | The Wicked Wazir (voice) | |
| Movie | 1942 | Joan of Paris | Second Gestapo Agent (uncredited) | |
| Movie | 1959 | The Alphabet Conspiracy | Mad Hatter | |
| Movie | 1939 | It's a Wonderful World | Mr. Delmonico, Stage Manager | |
| Movie | 1953 | Johann Mouse | Narrator (voice) | |
| Movie | 1980 | Scruffy | Mr. Tibbles (voice) | |
| Movie | 1977 | Halloween Is Grinch Night | The Grinch / Narrator (voice) | |
| Movie | 1957 | Jet Pilot | Col. Matoff | |
| Movie | 1957 | The Monster That Challenged the World | Dr. Jess Rogers | |
| Movie | 1952 | The World in His Arms | Eustace | |
| Movie | 2003 | Hell's Highway: The True Story of Highway Safety Films | (archive footage) | |
| Movie | 1981 | Faeries | Faerie King / Shadow (voice) | |
| Movie | 1958 | Hansel and Gretel | Witch | |
| Movie | 1957 | The Story of Anyburg U.S.A. | Prosecutor | |
| Movie | 1945 | Chew-Chew Baby | Wally Walrus (voice) | |
| Movie | 1944 | The Beach Nut | Wally Walrus (voice) | |
| Movie | 1945 | Woody Dines Out | Taxidermist (voice) | |
| Movie | 1965 | The Salty Sea | Narrator | |
| Movie | 1944 | Ski for Two | Wally Walrus | |
| Movie | 1943 | Hitler's Children | Dr. Graf | |
| Movie | 1955 | The Miracle on 34th Street | Mr. Shellhammer | |
| Movie | 1983 | Allison Sydney Harrison | Art Appraiser | |
| Movie | 1951 | Rich, Young and Pretty | Jean - Maitre D' | |
| Movie | 1950 | Nancy Goes to Rio | Alfredo | |
| Movie | 1956 | The Birds and the Bees | Jacques de Montaigne | |
| Movie | 1953 | Siren of Bagdad | Ben Ali | |
| Movie | 1963 | My Six Loves | Kinsley Kross | |
| Movie | 1938 | Dramatic School | Ramy | |
| Movie | 1953 | The Affairs of Dobie Gillis | Prof. Pomfritt | |
| Movie | 1983 | The Great Bear Scare | (voice) | |
| Movie | 1959 | Juke Box Rhythm | Balenko | |
| Movie | 1941 | Weekend for Three | Old Field Inn Desk Clerk | |
| Movie | 1981 | The Trolls and the Christmas Express | Troglo (voice) | |
| Movie | 1952 | Three for Bedroom C | Jack Bleck | |
| Movie | 1939 | On Borrowed Time | Man in Convertible (uncredited) | |
| Movie | 1958 | Rock-a-Bye Baby | Mr. Wright | |
| Movie | 1940 | Bitter Sweet | Rudolph - Man at Mama Luden's (uncredited) | |
| Movie | 1980 | The Incredible Book Escape | Professor Mickimecki (voice) | |
| Movie | 1981 | Once Upon a Mouse | Slave in the Magic Mirror (voice) | |
| Movie | 1978 | The Youth Who Wanted to Shiver | Narrator | |
| Movie | 1950 | Summer Stock | Harrison I. Keath | |
| Movie | 1942 | Once Upon a Honeymoon | Vienna Tailor's Fitter (uncredited) | |
| Movie | 1949 | On the Town | Francois (uncredited) | |
| Movie | 1939 | Never Say Die | Bit Part | |
| Movie | 1978 | The Cat from Outer Space | Dr. Heffel | |
| Movie | 1982 | Barefoot In the Park | Victor Velasco | |
| Movie | 1956 | Eloise | Rene the French Waiter | |
| Movie | 1981 | Through the Magic Pyramid | Ay / Mr. Mantley | |
| Movie | 1970 | The Phantom Tollbooth | King Azaz / The MathemaGician (voice) | |
| Movie | 1951 | Too Young to Kiss | Mr. Sparrow | |
| Movie | 1962 | Barbara | Narrator | |
| Movie | 1982 | Miss Switch to the Rescue | Mordo (voice) | |
| Movie | 1943 | Hostages | Lt. Glasenapp | |
| Movie | 1965 | E Flat Elephants | Narrator | |
| Movie | 1951 | Texas Carnival | Hotel Clerk | |
| Movie | 1942 | The Big Street | Louie, Headwaiter (Uncredited) | |
| Movie | 1940 | The Great Dictator | Undetermined Role (uncredited) | |
| Movie | 1942 | The Falcon Takes Over | Quincey W. Marriot (Uncredited) | |
| Movie | 1958 | The Big Beat | Vladimir Skilsky | |
| Movie | 1941 | Maisie Was a Lady | Georgie Porgie (Uncredited) | |
| Movie | 1948 | Variety Time | Rudy La Paix | |
| Movie | 1973 | Dr. Seuss on the Loose | Narrator / North-Going Zax / South-Going Zax (voice) | |
| Movie | 1943 | A Lady Takes a Chance | Gregg Stone | |
| Movie | 1950 | One Hour in Wonderland | Self - Slave in the Magic Mirror | |
| Movie | 1958 | The Unchained Goddess | Apothecary (voice) | |
| Movie | 1940 | Dulcy | Vincent Leach | |
| Movie | 1941 | Underground | Herman | |
| Movie | 1942 | The Wife Takes a Flyer | Hendrik Woverman | |
| Movie | 1979 | Daniel and Nebuchadnezzar | King Nebuchadnezzar | |
| Movie | 1943 | His Butler's Sister | Reeves | |
| Movie | 1949 | My Friend Irma | Prof. Kropotkin | |
| Movie | 1944 | Passage to Marseille | Jourdain | |
| Movie | 1956 | High Tor | Biggs | |
| Movie | 1942 | A Date with the Falcon | Desk Clerk (uncredited) | |
| Movie | 1953 | Ben and Me | Tom Jefferson / Crook (voice) | |
| Movie | 1949 | Bride for Sale | Jewelry Store Sales Clerk | |
| Movie | 1942 | The Greatest Gift | Father Fabian (uncredited) | |
| Movie | 1970 | Christmas Is | voice | |
| Movie | 1941 | More About Nostradamus | Feliz Paretti, later Pope Sixtus V (uncredited) | |
| Movie | 1941 | The Gay Falcon | Herman, Police Sketch Artist (uncredited) | |
| Movie | 2003 | Walt Disney's Fables - Vol.3 | Tom Jefferson / Crook (segment "Ben and Me") (archive sound) | |
| Movie | 1969 | Up Is Down | Narrator | |
| Movie | 1977 | Wizards | Guards (uncredited) | |
| Movie | 1942 | Pacific Rendezvous | Hotel Desk Clerk | |
| Movie | 1978 | Mickey's 50 | Self | |
| Movie | 1967 | Cricket on the Hearth | Tackleton (voice) | |
| Movie | 1967 | Kismet | Wazir | |
| Movie | 1964 | Robin and the 7 Hoods | Mr. Ricks (uncredited) | |
| Movie | 1969 | Wake Me When the War Is Over | Prof. Herman Erhardt | |
| Movie | 1951 | Behave Yourself! | Norbert Gillespie | |
| Movie | 1942 | Nightmare | Hans | |
| Movie | 1951 | The Walt Disney Christmas Show | Slave in the Magic Mirror | |
| Movie | 1942 | Saboteur | Edward (uncredited) | |
| Movie | 1982 | Disney's Halloween Treat | Captain Hook (voice) (archive footage) | |
| Movie | 1955 | The Invisible Moustache of Raoul Dufy | Narrator | |
| Movie | 1941 | Abdul the Bulbul Ameer | Abdul (voice) | |
| Movie | 1973 | Brothers O'Toole | Polonius Vandergelt | |
| Movie | 1959 | The Ransom of Red Chief | Sam Snyder | |
| Movie | 1948 | Design for Death | Narrator | |
| Movie | 1944 | Mrs. Parkington | Mr. Ernst | |
| Movie | 1955 | You're Never Too Young | Francois | |
| Movie | 1981 | American Dream | Abe Berlowitz | |
| Movie | 1955 | Davy Crockett at the Alamo | Thimblerig | |
| Movie | 1972 | The World's Greatest Freak Show | Narrator, Pflug | |
| Movie | 1956 | Saturday Spectacular: Manhattan Tower | Village Artist | |
| Movie | 1953 | The Emperor's New Clothes | Tailors / King / King's Aide / Jacob (voice) | |
| Movie | 1973 | Nutcracker | U.S. Narrator | |
| Movie | 1977 | Disney's Greatest Villains | Slave in the Magic Mirror / Captain Hook (voice) (archive footage) | |
| Movie | 1981 | A Disney Halloween | Magic Mirror (voice) | |
| Movie | 1961 | Feathertop | Governor Balfour | |
| Movie | 1954 | Meet the Family | Carlos Martinez | |
| Movie | 1959 | Faces and Fortunes | Narrator | |
| TV Show | 1961 | Mister Ed | | 1 |
| TV Show | 1976 | Alice | | 2 |
| TV Show | 1963 | Burke's Law | Dr. Bing | 1 |
| TV Show | 1968 | Here's Lucy | William Barkley | 1 |
| TV Show | 1950 | The Colgate Comedy Hour | Self | 1 |
| TV Show | 1964 | Gilligan's Island | | 2 |
| TV Show | 1962 | The Lucy Show | Dr. Gitterman | 2 |
| TV Show | 1951 | I Love Lucy | Mr. Jenkins | 1 |
| TV Show | 1976 | Laverne & Shirley | | 1 |
| TV Show | 1965 | Lost in Space | Sagramonte | 1 |
| TV Show | 1962 | The Merv Griffin Show | Self | 3 |
| TV Show | 1951 | Dragnet | | 1 |
| TV Show | 1954 | The Wonderful World of Disney | | 1 |
| TV Show | 1960 | The Islanders | Inspector Gardeva | 1 |
| TV Show | 1974 | Kolchak: The Night Stalker | | 1 |
| TV Show | 1966 | The Monkees | | 1 |
| TV Show | 1957 | Have Gun, Will Travel | | 1 |
| TV Show | 1964 | Daniel Boone | Orlando, The Prophet | 1 |
| TV Show | 1971 | The Partners | | 1 |
| TV Show | 1971 | The Chicago Teddy Bears | | 1 |
| TV Show | 1951 | Schlitz Playhouse of Stars | Professor Greentree | 1 |
| TV Show | 1955 | The Alcoa Hour | | 1 |
| TV Show | 1954 | Climax! | | 1 |
| TV Show | 1957 | The Real McCoys | | 1 |
| TV Show | 1959 | Adventures in Paradise | Dr. Mood | 1 |
| TV Show | 1955 | The 20th Century Fox Hour | | 1 |
| TV Show | 1958 | The Donna Reed Show | | 1 |
| TV Show | 1956 | The Adventures of Jim Bowie | | 1 |
| TV Show | 1957 | The New Adventures of Charlie Chan | | 1 |
| TV Show | 1961 | Ben Casey | | 1 |
| TV Show | 1952 | Cavalcade of America | General Francis Marion | 1 |
| TV Show | 1962 | Hoppity Hooper | | 13 |
| TV Show | 1963 | Fractured Flickers | | 26 |
| TV Show | 1961 | Dr. Kildare | Oliver Blair | 1 |
| TV Show | 1959 | The DuPont Show with June Allyson | David Brent | 1 |
| TV Show | 1981 | American Dream | | 8 |
| TV Show | 1952 | Mr. & Mrs. North | | 1 |
| TV Show | 1957 | Meet McGraw | | 1 |
| TV Show | 1969 | The Dudley Do-Right Show | | 39 |
| TV Show | 1956 | Hey, Jeannie! | Rodney St. Roman | 1 |
| TV Show | 1957 | Tonight Starring Jack Paar | Self | 20 |
| TV Show | 1957 | Maverick | Homer Eakins | 1 |
| TV Show | 1965 | Hogan's Heroes | Major Bonacelli | 1 |
| TV Show | 1951 | Schlitz Playhouse of Stars | Professor | 1 |
| TV Show | 1951 | Schlitz Playhouse of Stars | | 1 |
| TV Show | 1951 | Schlitz Playhouse of Stars | Warren Fitzjerner | 1 |
| TV Show | 1951 | Schlitz Playhouse of Stars | Emory Caldwell | 1 |
| TV Show | 1963 | Burke's Law | Pepe Van Heller | 1 |
| TV Show | 1963 | Burke's Law | Leonid Borodny | 1 |
| TV Show | 1952 | Four Star Playhouse | Reverend Tuttle | 1 |
| TV Show | 1962 | The Tonight Show Starring Johnny Carson | Self | 1 |
| TV Show | 1961 | The Mike Douglas Show | Self | 2 |
| TV Show | 1956 | Playhouse 90 | Rene the French Waiter | 1 |
| TV Show | 1977 | The Love Boat | Karl Schmidt | 1 |
| TV Show | 1969 | Love, American Style | Manfried the Great | 1 |
| TV Show | 1951 | I Love Lucy | Mr. Livermore | 1 |
| TV Show | 1969 | Love, American Style | | 1 |
| TV Show | 1959 | The Adventures of Rocky and Bullwinkle and Friends | Snidely Whiplash (voice) | 163 |
| TV Show | 1959 | The Bullwinkle Show | Snidely Whiplash (voice) (uncredited) | 2 |
| TV Show | 1951 | The Red Skelton Show | Freddie's Foil | 1 |
