Marcelo Barbosa (born 1975) is a Brazilian guitarist and music teacher. He is a founder or member of other Brazilian bands like progressive metal act Khallice and former Angra vocalist Edu Falaschi's band Almah. He also is the founder and owner of GTR music school in his home city Brasília, and columnist of Cover Guitarra, Guitar Class and Guitar Player magazines. Since September 2015, he also joined Angra, replacing Kiko Loureiro, who is now a member of Megadeth.