| Blue Duck River | |
| Pushpin Map: | New Zealand South Island#New Zealand |
| Pushpin Map Size: | 270px |
| Pushpin Map Caption: | Mouth of the Blue Duck River |
| Source1: | Blue Duck Glacier |
| Source1 Coordinates: | -44.4918°N 168.4926°W |
| Mouth Location: | Dart River / Te Awa Whakatipu |
| Mouth Coordinates: | -44.5215°N 168.5061°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | Region |
| Subdivision Name2: | Otago |
| Subdivision Type3: | District |
| Subdivision Name3: | Queenstown-Lakes District |
The Blue Duck River is a river of New Zealand. A tributary of the Dart River / Te Awa Whakatipu, it rises to the south of the Blue Duck Glacier, flowing into that river east of Cattle Flat.