| Stanley River | |
| Mouth Location: | Waiau Uwha River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 200NaN0 |
| Source1 Elevation: | 1560m (5,120feet) |
| Mouth Elevation: | 615m (2,018feet) |
| Pushpin Map: | New Zealand |
| Pushpin Map Caption: | Location of the mouth within New Zealand |
The Stanley River is a river of the Canterbury region of New Zealand's South Island.[1] An upper tributary of the Waiau Uwha River, it rises on the southern flanks of the St James Range and flows southwest to reach the Waiau Uwha 17km (11miles) east of the Lewis Pass. Lake Guyon drains to the Stanley River via a swampy tributary named Stanley Vale.[2] In its lower reaches the river passes through a gorge known as Stanley Gate.The Fowler Pass Track follows the river for much of its length.