| Name | Location | County | Country | Power source | Type | Function | River |
| Ruthin Mill, Ruthin | Ruthin | Denbighshire | United Kingdom | Water | Watermill | Corn mill | Clwyd |
| Saw mill, Park Farm, Ruthin | Ruthin | Denbighshire | United Kingdom | Water | Watermill | Saw mill | Clwyd |
| Woollen mill, Pandy'r Capel | Pandy'r Capel, Gwyddelwern | Merionethshire | United Kingdom | Water | Watermill | Woollen mill | Clwyd |