This paper evaluates the metallogenetic potential for REE (Rare-Earth Elements) of the State of São Paulo-Brazil. An exploration analysis model was based on a review of the pertinent bibliography (geology of São Paulo State and deposit types) followed by visits to Brazilian REE deposits. After these analyses, some potential areas have been checked through field and lab works (sampling, chemical and mineralogical analysis). The study concludes tha the State of São Paulo has a low potential for REE deposits. However, it indicates areas, such as the coastal plain in Cananeia-Iguape and Cenozoic aluvial sediments of the Pindamonhangaba Formation in the Paraíba Valley, where small placer deposits could occur.