| Willberg River | |
|---|---|
 | |
| Location | |
| Country | New Zealand |
| Physical characteristics | |
| Mouth | |
• location | Poerua River |
| Length | 8 km (5.0 mi) |
The Willberg River (also spelt Wilberg River) is a river of the West Coast Region of New Zealand's South Island. It initially flows northwest before turning southwest, reaching the Poerua River 12 kilometres south of Harihari.