Jason Griffith.
The voice actor? Well the voice actor is Jason Anthony Griffith.
Koji Yusa
In Japanese- Kouji Yusa in English- Jason Griffith.
The voice of Amy Rose from the release of the Shadow the Hedgehog video game to the sonic games made now is Lisa Ortiz. She also voiced Amy in the English dubbed Sonic X.
Pete Capella is the English voice actor while Daisuke Ono is the Japanese.
As of Sonic Colours, Sonic's new voice actor is Roger Craig Smith.
Jason Griffith, the same voice actor for Shadow the Hedgehog, Sonic the Hedgehog (2006), Sonic and the Secret Rings, and if you count the future title Sonic and the Black Night, that's Griffith too.
Leraldo Anzaldua is the English voice actor for Noda
American voice actor Dan Green.
Kouji Yusa in Japanese Jason Griffith form 2005-2010 Kirk Thornton 2010-Present
Several different people have done voice acting for Sonic the Hedgehog.In the Adventures of Sonic the Hedgehog, Sonic the Hedgehog (SatAM), and Sonic Underground TV series, Sonic was voiced by Jaleel White (the same actor who played Urkel on Family Matters).In the Sonic Underground TV series, the singing voice of Sonic was done by Samuel Vincent (who voiced characters in several other shows and animes).In the Sonic X TV series and the Sonic the Hedgehog games from 2005-2010, Sonic was voiced by Jason Griffith (the same actor who recorded the voice for Cilan in the dub of Pokémon Black and White, as well as other animes).In Sonic the Hedgehog: The Movie, Sonic was voiced by Martin Burke.In the Sonic the Hedgehog video game series from 1998 to 2004, the voice of Sonic is recorded by Ryan Drummond.The current voice of Sonic the Hedgehog in the video game series (as well as the upcoming Sonic Boom TV series) is Roger Craig Smith (the same actor who voiced Thomas in Regular Show).
Sonic the Hedgehog began speaking in the animated tv series based on the game. In the actual games, the first time he was given a voice actor was for Sonic Adventure.