| Tweed River | |
| Pushpin Map: | New Zealand |
| Pushpin Map Caption: | Location of the Tweed River |
| Source1: | Robinson Saddle |
| Source1 Location: | Inland Kaikōura Range |
| Mouth Location: | Confluence with the Waiau Toa / Clarence River |
| Mouth Coordinates: | -42.25°N 191°W |
| River System: | Waiau Toa / Clarence River |
The Tweed River is a minor river located in the Marlborough district on the South Island of New Zealand.
It drains Lake McRae, Carters and Robinson Saddles on the south-western side of the Inland Kaikōura Range and feeds into the Waiau Toa / Clarence River. The Tweed River lies within the borders of Molesworth Station.