| Koranga River | |
| Mouth Location: | Waioeka River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 20km (10miles) |
The Koranga River is a river of the northeast of New Zealand's North Island. It lies to the east of Te Urewera National Park, to the southwest of the settlement of Matawai, and flows northwest to reach its outflow into the Waioeka River.