| Itu River | |
| Source1 Location: | Rio Grande do Sul state |
| Mouth Location: | Ibicuí River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Itu River (Portuguese, Rio Itu) is a river of Rio Grande do Sul state in southern Brazil. It is a tributary of the Ibicuí River, which in turn is a tributary of the Uruguay River.