| Bettne River | |
| Pushpin Map: | New Zealand#New Zealand South Island |
| Pushpin Map Size: | 270px |
| Pushpin Map Caption: | Mouth of the Bettne River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | region |
| Subdivision Name2: | West Coast Region |
| Subdivision Type3: | District |
| Subdivision Name3: | Westland District |
| Length: | 5.7km (03.5miles) |
| Source1: | Purity Glacier |
| Source1 Location: | Southern Alps / Kā Tiritiri o te Moana |
| Source1 Coordinates: | -44.3303°N 168.8222°W |
| Source1 Elevation: | 1800m (5,900feet) |
| Mouth: | Jackson Bay / Okahu |
| Mouth Coordinates: | -44.3014°N 168.7819°W |
| Mouth Elevation: | 300m (1,000feet) |
| Progression: | Purity Glacier → Bettne River → Waiatoto River → Jackson Bay / Okahu |
| River System: | Waiatoto River |
| Tributaries Left: | Finis Creek |
The Bettne River is a river of South Westland, New Zealand. A tributary of the Waiatoto River, it rises in the Southern Alps / Kā Tiritiri o te Moana and flows north-westward to join that river 4km (02miles) south of the Bonar Flats.