| Castle River | |
| Mouth Location: | Awatere River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 16km (10miles) |
| Source1 Elevation: | 1530m (5,020feet) |
| Mouth Elevation: | 685m (2,247feet) |
The Castle River is a river in the Marlborough Region of New Zealand. Rising just north of Shingle Peak, the river flows east then south until it meets the Awatere River.[1] [2]