| Name | Location | County | Country | Power source | Type | Function | River |
| Gwynfryn Mill, Llanbedr | Llanbedr | Merionethshire | United Kingdom | Water | Watermill | Corn mill | Artro |
| Old Gwynfryn Mill, Llanbedr | Llanbedr | Merionethshire | United Kingdom | Water | Watermill | Woollen mill | Artro |
