| Hikuwai River | |
| Mouth Location: | Ūawa River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | Region |
| Subdivision Name2: | Gisborne |
| Progression: | Pangopango Stream → Waiau River → Hikuwai River → Ūawa River |
| River System: | Ūawa River |
The Hikuwai River is the name for the middle section of the Ūawa River in the Gisborne Region of New Zealand. The river flows south through a valley between two hill ridges to the north of Tolaga Bay, and for most of its length runs parallel with the Pacific coast, which lies 5km (03miles) to the east. The Hikuwai river section ends at the confluence with the Mangatokerau River 10km (10miles) before the Ūawa River into the sea at Tolaga Bay.
In March 2022, heavy rainfall in the region caused the river to rise by over 9.6 metres, causing the nearby town of Mangatuna to be evacuated.[1]