| Ugly River | |
| Pushpin Map: | New Zealand#New Zealand South Island |
| Pushpin Map Size: | 270px |
| Pushpin Map Caption: | Mouth of the Ugly River |
| Source1: | Amohia Peak |
| Source1 Coordinates: | -41.0202°N 172.3126°W |
| Mouth Location: | Karamea River |
| Mouth Coordinates: | -41.1956°N 172.3228°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 21km (13miles) |
| Progression: | Ugly River → Karamea River → Ōtūmahana Estuary → Karamea Bight → Tasman Sea |
| Tributaries Left: | Domett Creek, McNabb Creek |
| Tributaries Right: | Harley Creek, Rubble Creek |
The Ugly River is a river of the West Coast Region of New Zealand's South Island. It flows south to reach the Karamea River 17 kilometres northeast of Karamea. The river's entire length is within Kahurangi National Park.