| Name | Location | County | Country | Power source | Type | Function | River |
| Crescent Factory, Holywell | Holywell | Flintshire | United Kingdom | Water | Watermill | Woollen mill | Holywell Stream |
| Croes-Onen Windmill, Pen-y-Maes | Holywell | Flintshire | United Kingdom | Wind | Tower mill | ||
| Greenfield Mills, Holywell | Holywell | Flintshire | United Kingdom | Water | Watermill | Brass mill, Copper works, Rolling mill, Textile mill | Holywell Stream |
| Lower Mill, Holywell | Holywell | Flintshire | United Kingdom | Water | Watermill | Corn mill, Woollen mill | Holywell Stream |
| Post mill, Holywell | Holywell | Huntingdonshire | United Kingdom | Wind | Post mill | Corn mill | |
| Upper Mill, Holywell | Holywell | Flintshire | United Kingdom | Water | Watermill | Woollen mill | Holywell Stream |
| Victoria Mills, Holywell | Holywell | Flintshire | United Kingdom | Water | Watermill | Corn mill, Cotton mill | Holywell Stream |