| Manganui River | |
| Source1 Location: | Herangi Range |
| Mouth Location: | Awakino River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 20km (10miles) |
Waikato's Manganui River is located close to the west coast of New Zealand's North Island. It flows south, parallel to the coast of the North Taranaki Bight, before flowing into the Awakino River 5km (03miles) from the latter's mouth.