| Pearse River | |
| Pushpin Map: | New Zealand#New Zealand South Island |
| Pushpin Map Size: | 270px |
| Pushpin Map Caption: | Mouth of the Pearse River |
| Source1 Location: | Confluence of Eyles Creek and Whisky Creek |
| Source1 Coordinates: | -41.211°N 172.7406°W |
| Mouth Location: | Motueka River |
| Mouth Coordinates: | -41.2317°N 172.8133°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 13km (08miles) |
| Progression: | Pearse River → Motueka River → Tasman Bay → Tasman Sea |
| Tributaries Left: | Sugar Loaf Creek |
| Tributaries Right: | Field Creek, Goat Creek, Granity Creek |
The Pearse River is a river of the Tasman Region of New Zealand's South Island. It flows east from sources in the Wharepapa / Arthur Range, reaching the Motueka River 20 kilometres southwest of Motueka.
The source is a resurgence near the Nettlebed Cave. The resurgence has been dived to a depth of 245 metres[1] and a diver had died in one attempt. At least three undescribed species have been found by divers in the resurgence.[2]