- Lawman: As Doc Holiday (1959)
- Perry Mason: The Case of the Barefaced Witness (1961)
- The Detectives Starring Robert Taylor (1961–62)
- Perry Mason: The Case of the Bogus Books (1962)
- Bewitched (1964) Darrin's friend Kermit
- Batman (1966–68) – Title role, 3 seasons
- Alexander the Great (1968, unsold pilot)
- The Big Valley "In Silent Battle" Sept. 3, 1968; Season 4 Episode 1
- How I Got You (1969)
- The Eyes of Charles Sand (1972)
- Poor Devil (1973)
- Shazam! (1974–75, voice)
- Nevada Smith (1975)
- Family Feud (1976–85 Celebrity episodes as himself)
- The New Adventures of Batman (1977, voice)
- Tarzan and the Super 7 (1978–80, voice)
- Legends of the Superheroes (1979)
- For the Love of It (1980)
- Warp Speed (1981)
- Time Warp (1981)
- I Take These Men (1983)
- Ace Diamond Private Eye (1983, unsold pilot)
- Super Friends: The Legendary Super Powers Show (1984–85, voice)
- The Super Powers Team: Galactic Guardians (1985–86, voice)
- The Last Precinct (1986, 7 episodes)
- Murder, She Wrote (1987, "Death Takes a Dive", as Wade Talmadge)
- Zorro (1990, episode "The Wizard")
- Lookwell (1991, unsold pilot)
- 1775 (1992, unsold pilot)
- Rugrats (1992, voice)
- Batman: The Animated Series (1992, voice, Episode "Beware the Gray Ghost")
- The Ben Stiller Show (1992, guest-star)
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- Tales from the Crypt (TV series) (1994, Episode: "As Ye Sow")
- Danger Theatre (1993)
- Space Ghost Coast to Coast (1994, himself)
- The Simpsons (1994 and 2002, voice)
- The Adventures of Pete & Pete (1993–96)
- Goosebumps (1995, Episode: "Attack of the Mutant", as The Galloping Gazelle)
- Johnny Bravo (1997, voice)
- The Wayans Bros. (1997, himself)
- The Secret Files of the Spy Dogs (1998–99, voice)
- Histeria! (1999, voice)
- The Fairly OddParents (recurring cast member, voice, himself)
- Family Guy (2000–present, voice, Mayor Adam West)
- The Grim Adventures of Billy & Mandy (2001, voices)
- Return to the Batcave: The Misadventures of Adam and Burt (2003)
- Kim Possible (2003, episode The Fearless Ferret, voice)
- Monster Island (2004)
- Celebrity Deathmatch (1998–2001, 2005–06; himself)
- The Drew Carey Show (2001)
- Yes, Dear (2004)
- The Batman (2004–2007, voice of Mayor)
- The Boondocks (2006, voice)
- The King of Queens (2006, himself)
- George Lopez (TV series) (2007)
- Blue Harvest (2007, Grand Moff Tarkin)
- 30 Rock (2009, himself)
- SpongeBob SquarePants (2010, voice, young Mermaid Man)
- Funny or Die Presents (2011, himself)
- Batman: The Brave and the Bold (Thomas Wayne, episode "Chill of the Night!") (Proto, episode "The Plague of the Prototypes!")
- The Super Hero Squad Show (2011, Nighthawk)
- Jake and the Never Land Pirates (2011, Wise Old Parrot)
- Betty White's Off Their Rockers (2012, himself)
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