| Otamatea River | |
|---|---|
 | |
| Location | |
| Country | New Zealand |
| Physical characteristics | |
| Source | |
| • location | Ahimanawa Range |
| Mouth | |
• location | Rangitaiki River |
• elevation | 622 metres (2,041 ft) |
| Length | 27 kilometres (17 mi) |
The Otamatea River is a river of the northwestern Hawke's Bay region of New Zealand's North Island. It flows generally north from its origins in the northern foothills of the Ahimanawa Range, reaching the Rangitaiki River 25 kilometres southwest of Taupō amid the Kaingaroa Forest.