Aaron Mitchell Dismuke (born October 13, 1992) is an American voice actor, ADR director and script writer. He is known for his role as Alphonse Elric in the English dub of the first Fullmetal Alchemist television series, whom he voiced when he was 12 years old. He is also known for his directorial work for the English dubs of Nanbaka, Shomin Sample, Tsugumomo, Cheer Boys!
Source: Wikipedia