| Jaguari River | |
| Pushpin Map: | Brazil |
| Source1 Location: | São Paulo state |
| Mouth Location: | Paraíba do Sul |
| Mouth Coordinates: | -23.1739°N -45.9136°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Jaguari River (Portuguese: Rio Jaguari) is a river of São Paulo state in southeastern Brazil.[1] 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.The Fernão Dias Environmental Protection Area, created in 1997, also protects some of the headwaters.