Paraibuna River (São Paulo) should not be confused with Paraibuna River (Minas Gerais).
| Paraibuna River | |
| Pushpin Map: | Brazil |
| Source1 Location: | São Paulo state |
| Mouth Coordinates: | -23.3683°N -45.6639°W |
| Subdivision Type1: | Country |
The Paraibuna River (pt|Rio Paraibuna) is a river of São Paulo state in southeastern Brazil. It is a tributary of the Paraíba do Sul.
The headwaters are protected by the Mananciais do Rio Paraíba do Sul Environmental Protection Area, created in 1982 to protect the sources of the Paraíba do Sul river.