The Rio Araújo is a Fleuve Brésil IEN of the State of Santa Catarina. It marks the southern border between the municipality S of Florianópolis and São Jose, separating the districts from Capoeiras (in Florianópolis) and Campinas (in São Jose). It then throws in the Atlantic Ocean, in the Southern Baie.

The river is very polluted and any more a Poisson S since the years 1980 does not count.