| Puremāhaia River | |
| Pushpin Map: | New Zealand#New Zealand South Island |
| Pushpin Map Size: | 270px |
| Pushpin Map Caption: | Mouth of the Puremāhaia River |
| Source1 Coordinates: | -40.8304°N 172.7175°W |
| Mouth Location: | Golden Bay / Mohua |
| Mouth Coordinates: | -40.7926°N 172.7666°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Progression: | Puremāhaia River → Golden Bay / Mohua → Tasman Sea |
The Puremāhaia River is a river of the Tasman Region of New Zealand's South Island. It flows northeast through Puramāhoi, where it crosses under State Highway 60, before reaching Golden Bay five kilometres northwest of Tākaka.