São Luís Island is an island in Brazil with an area of 1,410 km² (544 sq mi), located between the Baía de São Marcos and the Baía de São José in Maranhão state. There are 4 cities located in the island: São Luís, after which the island is named, São José de Ribamar, Paço do Lumiar, and Raposa. São Luís is the capital of the state. The Island was originally named Upaon-Açu (literally big island) by the natives.
This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.