João Vieira is an island in the Bijagós Archipelago of

Guinea-Bissau Guinea-Bissau, officially the Republic of Guinea-Bissau, is a country in West Africa that covers with an estimated population of 2,026,778. It borders Senegal to Guinea-Bissau–Senegal border, its north and Guinea to Guinea–Guinea-Bissau b ...

. Its population is 6 (2009 census). It is part of the

João Vieira and Poilão Marine National Park João is a given name of Portuguese origin. It is equivalent to the given name John. The diminutive is Joãozinho and the feminine is Joana. It is widespread in Portuguese-speaking countries. Notable people with the name are enumerated in the s ...

.Quadro nacional da biotecnologia e biosegurança da Guiné-Bissau
, March 2008, p. 33 It lies north-northeast of the island Poilão. Other nearby islands are Meio and Cavalos. The islands are important nesting grounds for sea turtles. Administratively João Vieira belongs to the Bubaque sector in the Bolama region. It is located south of Roxa Island and northeast of Cavalos and Meio.

References

Bolama region Bissagos Islands {{GuineaBissau-geo-stub