| Mangawai River | |
|---|---|
 | |
| Location | |
| Country | New Zealand |
| Region | Northland Region |
| Physical characteristics | |
| Mouth | |
• location | Wairoa River |
The Mangawai River is a river of the Northland Region of New Zealand. It flows east into the Wairoa River close to its outflow into the Kaipara Harbour.