| Lud River | |
| Mouth Location: | Wakapuaka River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 7km (04miles) |
The Lud River is a river of the Nelson Region of New Zealand's South Island. It flows north from a ridge 10km (10miles) east of Nelson city centre, reaching the Wakapuaka River close to the latter's outfall into Delaware Bay, an indentation in the eastern shore of Tasman Bay / Te Tai-o-Aorere.
The Lud river has the same name as the river which runs through the town of Louth Lincolnshire UK.