São Luís River From Wikipedia the free encyclopedia For Rio São Luis, Amapá, see Rio São Luis (Amapá). This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "São Luís River" – news · newspapers · books · scholar · JSTOR (August 2013) (Learn how and when to remove this message) Rio São Luís is a river in the state of Acre, in Brazil, Brazil is a country in South America. References[edit] This article related to a river in Acre is a stub. You can help Wikipedia by expanding it.vte