Alan Oppenheimer (born April 23, 1930) is an American retired actor. He has performed numerous roles on live-action television since the 1960s and has had an active career doing voice work since the 1970s.
Oppenheimer has appeared in science fiction in the 1973 cult classic Westworld, where he played the head IT technician. He has also appeared in three Star Trek series, always playing a different character. He appeared in the episode "Rightful Heir" as a Klingon cleric, Koroth, a primary instigator of the cloning of Kahless; on as Starfleet Captain Declan Keogh in command of the USS Odyssey; and as an alien ambassador in .
Oppenheimer also appeared as film director Cecil B. DeMille in the 1994 Broadway production of Andrew Lloyd Webber's Sunset Blvd. Sunset Boulevard entry, broadwaymusicalhome.com; accessed May 9, 2015.
Oppenheimer's repertoire also includes , voicing Dr. Piotr Ivanovich in , Prometheus in God of War II and Jandor the Airship Captain in Nox. He additionally voiced Harold in , Dyntos and the Chariot Master in , and Darm and the Narrator in Ys.
In 2019, Oppenheimer guest-starred on the animated series Tigtone and featured in Toy Story 4 as Old Timer.
| 1966 | Gamera the Invincible | Dr. Contrare | |
| 1967 | Gunn | Whiteside | Credited as Allan Oppenheimer |
| 1968 | How to Save a Marriage and Ruin Your Life | Everett Bauer | |
| Star! | Andre Charlot, Producer | ||
| Up Tight! | Unctuous Man in Arcade | ||
| 1969 | The Maltese Bippy | Adolph Springer | |
| 1970 | Little Big Man | Major | |
| 1972 | The Groundstar Conspiracy | General Hackett | |
| 1973 | The Thief Who Came to Dinner | Insurance Man | |
| Westworld | Chief Supervisor | ||
| 1975 | Win, Place or Steal | Lt. Mannite | |
| The Lives of Jenny Dolan | Springfield | ||
| The Hindenburg | Albert Breslau | ||
| 1976 | Helter Skelter | Aaron Stovitz | |
| Freaky Friday | Mr. Joffert | ||
| 1978 | Record City | Blind Man | |
| 1979 | A Pleasure Doing Business | Marvin | |
| 1980 | Private Benjamin | Rabbi | |
| 1981 | Macbeth | Duncan | |
| 1982 | Mighty Mouse in the Great Space Chase | Mighty Mouse, Oil Can Harry, Swifty, Narrator, additional voices | Voice |
| 1984 | The NeverEnding Story | Falkor, Gmork, Rockbiter | Voices A green check mark indicates that a role has been confirmed using a screenshot (or collage of screenshots) of a title's list of voice actors and their respective characters found in its credits or other reliable sources of information. |
| 1985 | The Secret of the Sword | Skeletor, Man-At-Arms, Battle Cat, Bald Rebel, Chef Alan | |
| Skeletor, Man-At-Arms, Zipper | Voices | ||
| 1988 | Handlebar, Outlaw Scuzz, Stampede | ||
| Moving | Mr. Cadell | ||
| 1989 | Oomp | Voice | |
| 1992 | Love Field | Announcer | |
| 1993 | Invisible: The Chronicles of Benjamin Knight | Dr. Knox | |
| 1994 | Farr | ||
| 1997 | Culture | ||
| 2008 | Juan Frances: Live | Mr. French | |
| 2009 | The Secret Life of Bees | Additional voices | |
| 9 | The Scientist | Voice | |
| Alfred Pennyworth | |||
| 2014 | Foxcatcher | Du Point Dynasty Narrator | |
| 2017 | Best Fiends: Boot Camp | King Slug | |
| 2019 | Toy Story 4 | Old Timer | Voices |
| 2022 | He-Man, Skeletor |
| 1964 | The Defenders | Dr. Frick | |
| 1966 | The Felony Squad | Ed Clark | |
| The F.B.I. | Ludovic Krols | ||
| 1966–1967 | I Spy | Colonel Benkovsky | |
| 1967 | It's About Time | Pettijohn | |
| He & She | Murray Mouse | ||
| Judd for the Defense | District Attorney Tom Rogers | ||
| Get Smart | Agent 498 | ||
| 1967–1969 | Hogan's Heroes | 4 episodes: Colonel Sitzer, Herman Freitag, Major Byron Buckles, Wilhelm | |
| 1968 | The Andy Griffith Show | Mr. Ruskin | |
| The Name of the Game | Harvey | ||
| Here Come the Brides | Benet | ||
| 1968–1971 | The Mod Squad | 2 episodes: Bob Ross, Phil Norval | |
| 1969 | Lancer | Dan'l Drew | |
| The Queen and I | H.R. Martin | ||
| My Friend Tony | Dr. Mink | ||
| The Bill Cosby Show | Dwight McDevitt | ||
| Ironside | Arnold Cane | ||
| The Mod Squad | Phil Norval | ||
| 1969–1970 | That Girl | 4 episodes: Dr. Globe, Morgan Jerome, Mr. Katz, Stewart Hurly | |
| Here Come the Brides | 2 episides: Benet, Victor | ||
| 1970 | I Dream of Jeannie | Congressman Farragut | |
| Hastings Corner | Dr. Byron Dorman | ||
| My World and Welcome to It | The Principal | ||
| Three for Tahiti | Cecil Barrett | ||
| The Governor & J.J. | Mr. Federenko | ||
| The High Chaparral | Sweets | ||
| George Hartnell | |||
| 1971 | The Partridge Family | Wink Burgess | |
| Love, American Style | Captain Blodgett | ||
| Inside O.U.T. | Edgar Winston | ||
| The Good Life | Rolls Royce manager | ||
| McCloud | Mervin Simmons | ||
| The Jimmy Stewart Show | Prof. Lokacs | ||
| Nichols | Averrel | ||
| 1971–1972 | The Courtship of Eddie's Father | Sy Freeman | |
| Bonanza | 3 episodes: Darius Dalrymple, Ernesto, Wentworth | ||
| Insight | 2 episodes: Marty, Sergeant Varron | ||
| The Doris Day Show | 2 episodes: Marvin Patterson, The Doctor | ||
| 1972 | The Paul Lynde Show | Fletcher Lyons | |
| Bewitched | Blades Buckholtzer | ||
| Here's Lucy | 2 episodes: Dr. Parker, Herb Hinkley | ||
| 1973 | Butch Cassidy | Additional voices | |
| Goober and the Ghost Chasers | |||
| Speed Buggy | |||
| The New Scooby-Doo Movies | Windmaker #4 | Voice | |
| Inch High, Private Eye | Additional voices | ||
| Wait Till Your Father Gets Home | |||
| 1973–1974 | The Six Million Dollar Man | Dr. Rudy Wells | |
| 1974, 1979 | ABC Afterschool Special | First Cadet, de Brigny, John Hocker | Voice, 2 episodes |
| 1974 | Valley of the Dinosaurs | Gorok | Voice |
| Hong Kong Phooey | Additional voices | ||
| 1975 | Uncle Croc's Block | Fraidy Cat, Jasper Catdaver, Captain Eddie Kittenbacker, Cloud Nine, additional voices | Voice |
| Fraidy Cat | |||
| The Tom & Jerry Show | Ringmaster, Sapstone | Voice, 2 episodes | |
| 1976–1978 | The Scooby-Doo Show | Scooby-Dum, Jim Rivets, Mr. Collins, Tarlof, Officer Oldfield, Squire Marley, Jean Pierre Baptiste, Chin Wong Sing | Voice(December 16, 2015) "SkelEtor Masters of the Universe Alan Oppenheimer He-Man Phoenix Comicon Fan Fest". Nai Wang. Retrieved February 13, 2023. |
| 1976–1979 | Tarzan, Lord of the Jungle | Tomos, Orbin, Phobeg | Voice |
| 1977 | Simon Cappell | ||
| CB Bears | Sidney Merciless | Voice | |
| Laff-A-Lympics | Additional voices | ||
| Space Sentinels | Man-Wolf, Morpheus | Voice, 2 episodes | |
| Captain Caveman and the Teen Angels | Additional voices | Episode: "The Mystery Mansion Mix-Up" | |
| The All New Superfriends Hour | Dr. Cranum (in "The Brain Machine"), (in "The Secret Four"), Hydronoid #2 (in "Invasion of the Hydronoids"), Doctor Fright (in "Doctor Fright"), Wolfman (in "The Man Beasts of Xra"), The Marsh Monster (in "The Marsh Monster"), Captain Shark (in "The Protector"), Gentleman Ghost (in "The Ghost"), Scientist (in "The Ghost") | Voice, 7 episodes | |
| Hawaii Five-O | Bernie Fryer | Episode: "The Friends of Joey Kalima" | |
| 1978 | The Ghost of Flight 401 | Barton | |
| Peeping Times | Miles Rathbourne | ||
| Battle of the Planets | Additional voices | ||
| 1978–1979 | Fabulous Funnies | Captain Katzenjammer, Inspector, Gaylord, Irwin, Grelber, additional voices | Voice |
| Fangface | Additional voices | ||
| 1979 | ABC Weekend Special | 2 episodes | |
| Blind Ambition | George Simonson | ||
| 1979–1980 | The New Adventures of Mighty Mouse and Heckle & Jeckle | Mighty Mouse, Oil Can Harry, Swifty, Narrator, additional voices | |
| 1979–1981 | The Plastic Man Comedy/Adventure Show | Toyman, Half-Ape | Voice |
| 1979–1982 | The New Adventures of Flash Gordon | Ming the Merciless, Hans Zarkov, Gundar the Desert Hawk | |
| 1980 | Drak Pack | Count Dracula | |
| The Lone Ranger | Additional voices | ||
| 1980–1981 | Thundarr the Barbarian | Mindok the Mind Menace, Muragg, Old Wizard | Voice, 2 episodes |
| 1980–1982 | Scooby-Doo and Scrappy-Doo | Additional voices | |
| 1981 | Blackstar | Carpo, Overlord | Voice |
| 1981–1982 | The Kid Super Power Hour with Shazam! | Uncle Marvel, Doctor Sivana, Tawky Tawny, Wizard Shazam | Voice |
| Trollkins | Sheriff Pudge Trollism | Voice | |
| Hero High | Narrator, Mr. Sampson | ||
| 1981–1989 | The Smurfs | Vanity Smurf, Father Time | |
| 1982 | My Smurfy Valentine | Vanity Smurf | Voice, television film |
| Arthur Lazar | Television film | ||
| Mama's Family | Mayor Tutweller | ||
| The Scooby & Scrappy-Doo/Puppy Hour | Additional voices | ||
| Richie Rich | |||
| The Smurfs Christmas Special | Vanity Smurf | Voice, television film | |
| 1982–1985 | Knight Rider | General Duncton, Joe Lewis | |
| 1983 | The Smurfic Games | Vanity Smurf | Voice, television film |
| 1983–1985 | He-Man and the Masters of the Universe | Skeletor, Battle Cat, Man-At-Arms, Mer-Man, Buzz-Off, Roboto, Chef Alan, Nepthu, Chimera, Additional voices | Voice |
| 1985 | Challenge of the GoBots | Mobius | Voice, episode: "Genius and Son" |
| 1985–1986 | The Transformers | Beachcomber, Breakdown, Seaspray, Warpath | Voice |
| 1985 | The Wuzzles | Rhinokey, Crocosaur, Mr. Packcat | |
| The 13 Ghosts of Scooby-Doo | Mirror Demon, Professor Fantazmo | Voice, 2 episodes | |
| 1985–1987 | Skeletor, Battle Cat, Man-At-Arms, Spyster, Additional voices | Voice | |
| 1986 | The Centurions | Dr. Gates | Voice |
| Ghostbusters | Prime Evil, Fangster, Long John Scarechrome | ||
| Sam Trautman | |||
| Karate Kommandos | President | ||
| Strong Medicine | Dr. Townsend | ||
| 1987 | Bionic Six | Professor Amadeus Sharp, Metalhand | Voice |
| Tis The Season To Be Smurfy | Vanity Smurf | Voice, television film | |
| Blondie & Dagwood | Julius Dithers | Voice, TV special | |
| 1987–1988 | BraveStarr | Handlebar, Outlaw Scuzz, Stampede | Voice |
| Snorks | Additional voices | 4 episodes | |
| 1987–1990 | DuckTales | Colonel Beaureguard DuBark, All My Ducklings Actor, Von Doghausen | Voice, 3 episodes |
| 1988 | A Pup Named Scooby-Doo | Additional voices | Season 1 |
| Scooby-Doo! and the Reluctant Werewolf | Mummy, Swamp Thing | Voice, television film | |
| The New Yogi Bear Show | Additional voices | ||
| Superman | Jonathan Kent | Voice | |
| Matlock | Dr. Linder | Episode: "The Heiress" | |
| 1988–1989 | Slimer! and the Real Ghostbusters | Goolem, Morris P. Grout | Voice |
| Fantastic Max | Additional voices | ||
| 1989 | Plato, Aldrin Klordane, Captain Kernel | Voice | |
| Blob, Colonel Chaffey | Voice, television film | ||
| Blondie & Dagwood: Second Wedding Workout | Julius Dithers | Voice, TV special | |
| 1990 | Teenage Mutant Ninja Turtles | Dr. Polidorius | Voice, episode: "Rebel Without a Fin" |
| The Wizard of Oz | Wizard | Voice | |
| 1991 | TaleSpin | Principal Ed Pomeroy | Voice, episode: "Sheepskin Deep" |
| Captain Planet and the Planeteers | Dr. Borzon | Voice, episode: "Meltdown Syndrome" | |
| Additional voices | |||
| James Bond Jr. | The Chameleon | Voice | |
| Arthur Lyons | |||
| 1991–1993 | The Legend of Prince Valiant | Merlin | Voice |
| 1992 | Fish Police | Additional voices | Episode: "The Two Gils" |
| Tom & Jerry Kids | 3 episodes | ||
| The Little Mermaid | Episode: "The Evil Manta" | ||
| 1993 | Bonkers | 2 episodes | |
| I Yabba-Dabba Do! | Television film | ||
| Koroth | |||
| 1994 | Captain Keogh | ||
| Auctioneer | Voice, episode: "Time Out of Joint" | ||
| Fantastic Four | Watcher, Firelord | Voice, episode: "The Silver Surfer and the Coming of Galactus" | |
| 1994–1995 | Phantom 2040 | Professor Jack Archer | Voice |
| 1997 | Nezu Ambassador | ||
| 1997–1998 | The New Adventures of Zorro | Additional voices | |
| 1998 | Leonard Gould | ||
| Invasion America | Additional voices | 3 episodes | |
| Jumanji | Ludwig Von Ritcher | Voice, 2 episodes | |
| 2000 | Rocket Power | Television Announcer | |
| 2001–2004 | Passions | Alistair Crane | |
| 2003 | The Big O | Norman Burg | Voice, English dub |
| 2003, 2006 | The Grim Adventures of Billy & Mandy | Father Time, Mighty Moe | Voice, 5 episodes |
| 2004 | Laoban | Voice, episode: "Red Data" | |
| 2005 | Clifford's Puppy Days | Mr. Solomon | Voice, 2 episodes |
| 2007 | 'Til Death | Mr. Wallach | Episode: "Performance Anxiety" |
| 2014 | Adventure Time | Darren the Ancient Sleeper, Sun | Voice, episode: "Something Big" |
| 2019 | Tigtone | Beautiful Horse Head | Voice, episode: "Tigtone and the Beautiful War" |
| Forky Asks a Question | Old Timer | Voice, episode: "What is Time?" | |
| 2020 | JJ Villard's Fairy Tales | Mirror Max, Roach, Flea Circus | Voice, episode: "Snow White" |
| 2021 | Moss Man | Voice | |
| 2022 | He-Man and the Masters of the Universe | King Grayskull | Voice |
| 1990 | Ys I & II | Darm | English dub |
| 1999 | Leopard Master | ||
| 1999 | Revenant | Ogrok, Urgg | |
| 2000 | Nox | Captain, Necromancer, Lewis | |
| 2000 | Guardian Telwyn, Sir Sarles, Mornmaster Thaddin Dawnhunter | ||
| 2000 | Additional voices | ||
| 2000 | Invictus | Additional voices | |
| 2001 | Harold, Cult Ghoul Thug, Cult Ghoul Soldier | ||
| 2002 | Earth & Beyond | Memnon | |
| 2002 | Piotr Ivanovich | ||
| 2003 | Additional voices | ||
| 2004 | Harold, Cult Ghoul Thug, Soldier | ||
| 2004 | Additional voices | ||
| 2004 | Charles Northcutt | ||
| 2004 | The Bard's Tale | Additional voices | |
| 2007 | God of War II | Prometheus | |
| 2008 | Robert Ludlum's The Bourne Conspiracy | Additional voices | |
| 2008 | Tom Clancy's EndWar | Additional voices | |
| 2012 | Dyntos, Chariot Master | English dub | |
| 2015 | Fallout 4 | Paladin Brandis | |
| 2016 | He-Man: Tappers of Greyskull | Skeletor |
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