| Ivaí River | |
|---|---|
| Origin | Paraná state |
| Mouth | Paraná River |
| Basin countries | Brazil |
The Ivaí River (Portuguese, Rio Ivaí[1]) is a river of Paraná state in southern Brazil. It is a tributary of the Paraná River. Its official spelling is Ivaí, with variants including Ivahy and Ival.[2]