| Wairoa River | |
| Source1 Location: | Gordon Range |
| Mouth Location: | Waimea River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 45km (28miles) |
The Wairoa River is located in the north of the South Island of New Zealand. It flows north for 45 kilometres before combining with the Wai-iti River to form the Waimea River. This flows into the southern end of Tasman Bay / Te Tai-o-Aorere near Richmond.