Yamandu Costa (born January 24, 1980 in Passo Fundo), sometimes misspelled Yamandú, is a Brazilian guitarist and composer.
His main instrument is the Brazilian seven-stringed classical guitar.
Costa began to study guitar at age seven with his father, Algacir Costa, leader of the group Os Fronteiriços (The Frontiersmen) and mastered the instrument after studying with Lúcio Yanel, an Argentine virtuoso who lived in Brazil.