| Name | Location | County | Country | Power source | Type | Function | River |
| Llawr-y-glyn Mill, Llawr-y-glyn | Trefeglwys | Montgomeryshire | United Kingdom | Water | Watermill | Corn mill | Trannon |
| Pandy, Gwernafon, Llawr-y-glyn | Trefeglwys | Montgomeryshire | United Kingdom | Water | Watermill | Woollen mill | Trannon |
| Rhyd-y-carw Mill, Trefeglwys | Trefeglwys | Montgomeryshire | United Kingdom | Water | Watermill | Corn mill | Trannon |
| Talgarth Mill, Trefeglwys | Trefeglwys | Montgomeryshire | United Kingdom | Water | Watermill | Corn mill | Trannon |
