| Tummil River | |
|---|---|
 | |
| Location | |
| Country | New Zealand |
| Physical characteristics | |
| Mouth | |
• location | Avon River |
| Length | 12 km (7.5 mi) |
The Tummil River is a river of the Marlborough Region of New Zealand's South Island. It flows northwest from rough hill country north of Mount Horrible to reach the Avon River southwest of Blenheim.