Jason Griffith is an American actor best known for his extensive work in voice acting for animated series and video games, particularly during the 2000s. He was born Jason Adam Griffith on November 29, 1980, in Lakeline, Ohio. He began his acting career in the late 1990s, but became widely recognized for his voice roles in English-language dubs of anime productions.

Griffith's career is closely associated with 4Kids Entertainment, where he provided voices for numerous series airing on the company's programming blocks. His most iconic role during this period was voicing the titular character, Sonic the Hedgehog, in the anime Sonic X. He went on to reprise this role in several Sonic the Hedgehog video games from 2005 until 2010, including titles such as Shadow the Hedgehog, Sonic Riders, Sonic Unleashed, and Super Smash Bros. Brawl, often using the alias Adam Caroleson for these credits. He also voiced other characters from the franchise, including Shadow the Hedgehog and Jet the Hawk.

In addition to his work in the Sonic franchise, Griffith voiced many other prominent anime characters. He was the voice of Usopp in the 4Kids dub of One Piece and Tatsuha Uesugi in Gravitation. He had a long association with the Pokémon anime, voicing characters like Brawly, the recurring character Looker, and, most significantly, Cilan, who was a main character in the Pokémon: Black and White series. His Pokémon film credits include roles such as Sir Aaron in Pokémon: Lucario and the Mystery of Mew, Marcus in Pokémon: Arceus and the Jewel of Life, and Cilan in several movies including Pokémon the Movie: Kyurem vs. the Sword of Justice and the prologue Mewtwo ~Kakusei e no Prologue~. He also appeared in the short Sonic: Night of the Werehog as Sonic.

Griffith's other notable voice work includes roles in Yu-Gi-Oh! GX, Yu-Gi-Oh! 5D's, Teenage Mutant Ninja Turtles, Chaotic, Winx Club, and Kurokami: The Animation. He has also done voice work for other dubbing studios like NYAV Post, with credits including 009 Re:Cyborg, Psychic School Wars (as Mr. Saito), and Romantic Killer. His career demonstrates a significant contribution to English-language anime dubbing, with a particular legacy tied to his portrayal of Sonic the Hedgehog during a pivotal era for the franchise.