| Waimamakau River | |
| Mouth Location: | Waimamaku River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
Waimamakau River should not be confused with Waimamaku River.
The Waimamakau River is a short river of the Northland Region of New Zealand's North Island. Confusingly, it is a tributary of the Waimamaku River, reaching the latter 10 kilometres southeast of Ōmāpere.