Domingo Jonhy Vega Urzúa (December 24, 1977, Arica, Chile), commonly known as Américo, is a Chilean singer.

He became known when he started leading the band Américo y la Nueva Alegría. He is the son of the boleros singer Melvin "Corazón" Américo.

Américo started his musical career at the 8 years old, when unexpectedly, he had to replace his brother Darwin, who had to sing in the Carnaval del Parque Lauca, one of the most populated areas of Arica. After that, he started participating in local and regional festivals. When he was 9 years old, he recorded his debut album, Para mis padres, and later released his second album, Mi colegiala, while he was a teenager.

When he released his album Tropicalmente Américo, he was discovered by the bando Alegría, who at the time, were without a vocalist, and they invited him to join the band. With the band, Americo recorded 11 albums, such as El nuevo tropical (1997, remastered in 2001), En vivo, teatro monumental 1 y 2 (1998), Somos parte de tu vida (1999), Tu corazón nos pertenece (2000), and En vivo entrega disco de platino (1999). He worked with them until 2002, when he decided to leave the band.