| Mangawhai River | |
| Mouth Location: | Manganui River (Northland) |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | Region |
| Subdivision Name2: | Northland Region |
The Mangawhai River is a river of the Northland Region of New Zealand. It flows into the Mangawhai Estuary, Mangawhai Harbour and then into the Pacific Ocean.[1] [2]