Carlos Alazraqui (Rocko from Rocko's Modern Life, Denzel Crocker on The Fairly OddParents, Lazlo and Clam in Camp Lazlo, the Taco Bell chihuahua, Spyro in Spyro the Dragon, Winslow and Lube from CatDog, Mr.
Joe Alaskey (died February 3, 2016, age 63) (voice of Bugs Bunny and other characters formerly voiced by Mel Blanc, Plucky Duck in Tiny Toon Adventures, Grandpa Lou Pickles in Rugrats and All Grown Up!, Stinkie in Casper and The Spooktacular New Adventures of Casper and Baby Huey in The Baby Huey Show).
Ben Affleck (Joseph in Joseph: King of Dreams Gorast in Bionicle Mistika).
Pamela Segall Adlon (Bobby Hill in King of the Hill, Ashley Spinelli in Recess, Andrew "Andy" Johnson in Squirrel Boy, Margaret "Moose" Person in Pepper Ann, Lucky in 101 Dalmatians: The Series).
Also serves as voice director for Rugrats, The Wild Thornberrys and As Told by Ginger Corroder in Hero Factory) Baboon on I Am Weasel, Cow on Cow and Chicken and I Am Weasel, Starscream in live-action Transformers movies, Doctor Doom in The Super Hero Squad Show, Ickis on Aaahh!!! Real Monsters and Cobra Commander in the current G.I.
Charlie Adler (Spike in My Little Pony, Buster Bunny on Tiny Toon Adventures, Animaniacs, Space Jam, and Looney Tunes: Back in Action, Ed and Bev Bighead on Rocko's Modern Life, I.R.
William Adams, a/k/a will.i.am ( Madagascar: Escape 2 Africa as Moto Moto and Rio as Pedro).
Don Adams (died September 25, 2005, age 82) ( Tennessee Tuxedo, Inspector Gadget, Gadget Boy, Principal Hickey in Pepper Ann, and himself in The New Scooby-Doo Movies), (Episode " The Exterminator" - Season 1, 1972).
Bryan Adams (Hoodwink in The Real Story of the Three Little Kittens).
Mark Acheson (Unicron on Transformers: Armada and Transformers: Energon as well as the narrator for Transformers Energon, Fat Dog Mendoza on Fat Dog Mendoza and Lord Tirek on My Little Pony Friendship is Magic).
Paula Abdul (Wristwatch#1 in Robots, Herself in Opposites Attract, Skat Strut, and Looney Tunes: Back in Action).
Bud Abbott (died April 24, 1974, age 76) (Himself in The Abbott and Costello Cartoon Show).
Greg Abbey (as MaximIX in Cubix: Robots for Everyone, Yusei Fudo in Yu-Gi-Oh! 5D's, Tristan Taylor in Yu-Gi-Oh! after episode 11, and the 2003 Teenage Mutant Ninja Turtles as Raphael).