Severino "Sivuca" Dias de Oliveira (26 March 1930, Itabaiana, Paraíba, Brazil — 14 December 2006, João Pessoa, Paraíba, Brazil) was a Brazilian accordionist and guitarist.

He is best known internationally for his work with Scandinavian jazz musicians in the 1980s. His most famous songs are the Brazilian popular classic "João e Maria" with lyrics by Chico Buarque and the accordion standard "Feira de Mangaio". He is also famous for his use of makeshift instruments playing alongside conventional ones and for his versatility, fusing traditional regional styles like forro and Chorinho with jazz, bossa nova, classical, and other musical forms.

Sivuca and Hermeto Pascoal, both versatile multi-instrumentalists with albinism, have worked together and are sometimes confused with each other. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.