The Tweed River is a minor river located in the Marlborough district on the South Island of New Zealand.
| Tweed River | |
|---|---|
.png)  Location of the Tweed River | |
| Physical characteristics | |
| Source | Robinson Saddle |
| • location | Inland Kaikōura Range |
| Mouth | |
• location | Confluence with the Waiau Toa / Clarence River |
• coordinates | 42°15′S 173°18′E / 42.250°S 173.300°E |
| Basin features | |
| River system | Waiau Toa / Clarence River |
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.