| Movie | 1959 | North by Northwest | Auctioneer | |
| Movie | 1966 | The Fortune Cookie | Thompson | |
| Movie | 1959 | The Angry Red Planet | Prof. Theodore Gettell | |
| Movie | 1951 | The Racket | Harry Craig | |
| Movie | 1975 | Rikki-Tikki-Tavi | Father (voice) | |
| Movie | 2005 | The Naked Monster | General Mann | |
| Movie | 1965 | Girl Happy | Opening Narrator (uncredited) | |
| Movie | 1960 | The Story of Ruth | Elimelech | |
| Movie | 1963 | The Slime People | Norman Tolliver | |
| Movie | 1955 | A Man Called Peter | Senator Willis K. Harvey | |
| Movie | 1958 | From the Earth to the Moon | Countdown Announcer | |
| Movie | 1962 | Mister Magoo's Christmas Carol | Ghost of Christmas Present (voice) | |
| Movie | 1954 | Susan Slept Here | Harvey Butterworth | |
| Movie | 1983 | Daffy Duck's Movie: Fantastic Island | The Well (voice) | |
| Movie | 1974 | Fangs | Snakey Bender | |
| Movie | 1975 | Yankee Doodle Cricket | Chester C. Cricket / Harry the Cat (voice) | |
| Movie | 1957 | The Monolith Monsters | Martin Cochrane | |
| Movie | 1959 | The Monster of Piedras Blancas | Dr. Sam Jorgenson | |
| Movie | 1979 | Raggedy Ann and Raggedy Andy in the Pumpkin Who Couldn't Smile | The Pumpkin (voice) | |
| Movie | 1956 | The Unguarded Moment | Mr. Pendleton | |
| Movie | 1973 | A Very Merry Cricket | Chester C. Cricket / Harry the Cat (voice) | |
| Movie | 1967 | Creature of Destruction | Dr. John Basso | |
| Movie | 1962 | Shootout at Big Sag | Chan Bartholomew | |
| Movie | 1971 | Strawberries Need Rain | The Reaper | |
| Movie | 1951 | The Blue Veil | Joplin | |
| Movie | 1973 | A Cricket in Times Square | Chester C. Cricket / Harry the Cat / Father / Music Teacher (voice) | |
| Movie | 1978 | Raggedy Ann & Andy: The Great Santa Claus Caper | Alexander Graham Wolf / Santa Claus (voice) | |
| Movie | 1985 | Starchaser: The Legend of Orin | Arthur (voice) | |
| Movie | 1969 | Birthday | Churchy La Femme / Beauregard | |
| Movie | 1958 | The Perfect Furlough | Col. Leland | |
| Movie | 1956 | Everything But the Truth | Lawrence Everett | |
| Movie | 1952 | It Grows on Trees | Finlay Murchison | |
| Movie | 1953 | I Love Melvin | Mr. Henneman | |
| Movie | 1964 | Kwaheri | Narrator | |
| Movie | 1953 | Dream Wife | Ken Landwell | |
| Movie | 1965 | Strange Bedfellows | Opening Off-Screen Narrator (uncredited) | |
| Movie | 1960 | The Gallant Hours | Frank Enright | |
| Movie | 1969 | The Pogo Special Birthday Special | Churchy La Femme / Beauregard | |
| Movie | 1974 | Oliver Twist | Fagin | |
| Movie | 1970 | The Phantom Tollbooth | Humbug (voice) | |
| Movie | 1985 | Rainbow Brite and the Star Stealer | Orin / Bombo / TV announcer (voice) | |
| Movie | 1952 | Francis Goes to West Point | Col. Daniels | |
| Movie | 1987 | The Smurfs: 'Tis the Season to Be Smurfy | Gustav (voice) | |
| Movie | 1956 | The Lieutenant Wore Skirts | Henry 'Hank' Gaxton | |
| Movie | 1959 | Say One for Me | Harry LaMaise | |
| Movie | 1987 | Ultraman: The Adventure Begins | Dr. Philby | |
| Movie | 1962 | About Time | King of Planet Q | |
| Movie | 1984 | Quest | | |
| Movie | 1988 | The Creation - Greatest Adventure Stories from the Bible | God / The Storyteller (Voice) | |
| Movie | 1964 | The Big Parade of Comedy | Narrator (voice) | |
| Movie | 1956 | Forbidden Planet | Narrator (voice) (uncredited) | |
| Movie | 1963 | King Kong vs. Godzilla | Mr. Tako / Dr. Shigesawa / Dr. Akira Makino / General Masami Shinzo / Commander Roberts / Narrator (voice) (uncredited) | |
| Movie | 1953 | The War of the Worlds | Maj. Gen. Mann | |
| TV Show | 1961 | Mister Ed | | 2 |
| TV Show | 1960 | The Andy Griffith Show | C.J. Hasler | 1 |
| TV Show | 1958 | 77 Sunset Strip | | 1 |
| TV Show | 1964 | Voyage to the Bottom of the Sea | | 1 |
| TV Show | 1962 | The Beverly Hillbillies | Dr. Stuyvesant | 1 |
| TV Show | 1963 | My Favorite Martian | | 0 |
| TV Show | 1971 | Curiosity Shop | | 2 |
| TV Show | 1957 | Perry Mason | Harry Lannon | 1 |
| TV Show | 1955 | Alfred Hitchcock Presents | Dr. Fred Bixby | 1 |
| TV Show | 1959 | Rawhide | Dr. Gardner | 1 |
| TV Show | 1955 | The Millionaire | Fred Malcolm | 1 |
| TV Show | 1962 | The Virginian | Mr. Lowell | 1 |
| TV Show | 1957 | The Thin Man | | 1 |
| TV Show | 1955 | The 20th Century Fox Hour | | 1 |
| TV Show | 1967 | Judd for the Defense | | 1 |
| TV Show | 1955 | Matinee Theater | | 1 |
| TV Show | 1948 | The Philco Television Playhouse | | 1 |
| TV Show | 1955 | Navy Log | | 1 |
| TV Show | 1958 | The Rifleman | | 1 |
| TV Show | 1963 | The Dakotas | | 1 |
| TV Show | 1963 | Mr. Novak | Bates | 1 |
| TV Show | 1958 | The Texan | | 1 |
| TV Show | 1954 | The Whistler | | 1 |
| TV Show | 1961 | The New Breed | Garland | 1 |
| TV Show | 1956 | Dick Powell's Zane Grey Theatre | Attorney General | 1 |
| TV Show | 1965 | Hank | | 1 |
| TV Show | 1962 | General Electric True | | 1 |
| TV Show | 1961 | Dr. Kildare | Dr. Keith Bresson | 1 |
| TV Show | 1959 | The DuPont Show with June Allyson | Vance | 1 |
| TV Show | 1961 | Dr. Kildare | Dr. Arthur Jansen | 1 |
| TV Show | 1962 | The Virginian | Horatio Troast | 1 |
| TV Show | 1960 | Checkmate | Simon Oelrich | 1 |
| TV Show | 1957 | Perry Mason | Frederic Archer III | 1 |
| TV Show | 1957 | Perry Mason | Deputy D.A. Stewart Linn | 1 |
| TV Show | 1957 | Perry Mason | Willard Nesbitt | 1 |
| TV Show | 1957 | Perry Mason | Bernard Daniels | 1 |
| TV Show | 1957 | Perry Mason | Lawrence Otis | 1 |
| TV Show | 1957 | Perry Mason | George Browne | 1 |
| TV Show | 1957 | Perry Mason | Ed Pierce | 1 |
| TV Show | 1963 | My Favorite Martian | Mr. Clary | 1 |
| TV Show | 1955 | Alfred Hitchcock Presents | Peter Talbot | 1 |
| TV Show | 1958 | The Further Adventures of Ellery Queen | Inspector Richard Queen | 32 |
| TV Show | 1974 | Shazam! | Mentor | 28 |
| TV Show | 1962 | The Alfred Hitchcock Hour | Felix Ryder | 1 |
| TV Show | 1962 | The Alfred Hitchcock Hour | Mr. Selby | 1 |
