Yamandu Costa (born January 24, 1980, in Passo Fundo), sometimes spelled Yamandú, is a Brazilian guitarist and composer.

His main instrument is the violão de sete cordas, the Brazilian seven-string classical guitar.

Yamandu Costa gained increased international recognition after he appeared in Mika Kaurismäki's 2005 documentary film Brasileirinho.

The film showcased the vibrant world of Brazilian choro music and featured Costa’s impressive guitar skills, which helped him reach a broader audience.

Costa's diverse styles include choro, bossa nova, milonga, tango, samba and chamamé.