| Waikūkūpa River | |
| Pushpin Map: | New Zealand South Island#New Zealand |
| Pushpin Map Size: | 270px |
| Pushpin Map Caption: | Mouth of the Waikūkūpa River |
| Source1: | Fritz Glacier |
| Source1 Coordinates: | -43.4795°N 170.1568°W |
| Mouth: | Tasman Sea |
| Mouth Coordinates: | -43.3356°N 170.0061°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | Region |
| Subdivision Name2: | West Coast |
| Subdivision Type3: | District |
| Subdivision Name3: | Westland |
| Length: | 16km (10miles) |
| Progression: | Waikūkūpa River → Tasman Sea |
| River System: | Waikūkūpa River |
| Tributaries Left: | Joey Creek, Acrobat Creek, Molly Creek |
| Tributaries Right: | Hare Mare Creek, Paddy Creek |
The Waikūkūpa River is a river of the West Coast region of New Zealand's South Island. It flows northwest through Westland Tai Poutini National Park to reach the Tasman Sea 14 kilometres north of Fox Glacier township.