| Ōkārito River | |
| Pushpin Map: | New Zealand South Island#New Zealand |
| Pushpin Map Size: | 270px |
| Pushpin Map Caption: | Mouth of the Ōkārito River |
| Source1: | Lake Mapourika |
| Source1 Coordinates: | -43.2927°N 170.2198°W |
| Source1 Elevation: | 82m (269feet) |
| Mouth: | Ōkārito Lagoon |
| Mouth Elevation: | 0m (00feet) |
| Mouth Coordinates: | -43.2193°N 170.1626°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | Region |
| Subdivision Name2: | West Coast |
| Subdivision Type3: | District |
| Subdivision Name3: | Westland |
| Length: | 12km (07miles) |
| Progression: | Lake Mapourika → Ōkārito River → Ōkārito Lagoon → Tasman Sea |
| River System: | Ōkārito River |
| Tributaries Left: | Jenkins Creek |
| Tributaries Right: | Zalas Creek |
The Ōkārito River is a river of the West Coast Region of New Zealand's South Island. It flows northwest from the northern end of Lake Mapourika, reaching the Ōkārito Lagoon 15 kilometres west of Whataroa.