| Ivinhema River | |
| Pushpin Map: | Brazil |
| River System: | Paraná River |
| Source1 Location: | Mato Grosso do Sul state |
| Mouth: | Paraná River |
| Basin Size: | 38200km2 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
| Length: | 595km (370miles) |
| Discharge1 Avg: | 544.5m3/s |
The Ivinhema River (Portuguese: Rio Ivinhema) is a river of Mato Grosso do Sul state in southwestern Brazil. It is one of the main tributaries of the western part of the Paraná River.
Forty-six different species of fish were found in seven streams in the river basin.[1] The lower reaches are protected by the Rio Ivinhema State Park, created in 1998.