Monmouthshire
Historic counties data provided by Association of British Counties / Historic Counties Trust.
| Name | Location | County | Country | Power source | Type | Function | River |
| Abbey Furnace and Wireworks, Tintern | Tintern | Monmouthshire | United Kingdom | Water | Watermill | Forge mill | Anghidi |
| Abbey Mill, Tintern | Tintern | Monmouthshire | United Kingdom | Water | Watermill | Saw mill, Workshop | Wye |
| Black Brook Mill, Penallt | Penallt, Trellech United | Monmouthshire | United Kingdom | Watermill | Cider mill | Black Brook | |
| Buckholt Mill, Buckholt | Dixton | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Mally Brook |
| Buckholt Old Mill, Buckholt | Dixton | Monmouthshire | United Kingdom | Water | Watermill | Mally Brook | |
| Cider mill, Chapel Hill | Chapel Hill, Tintern | Monmouthshire | United Kingdom | Water | Watermill | Cider mill | Wye |
| Clearwater Paper Mill, Whitebrook | Whitebrook, Trellech United | Monmouthshire | United Kingdom | Steam, Water | Watermill | Paper mill | White Brook |
| Crucorney Mill, Llanfihangel | Llanfihangel | Monmouthshire | United Kingdom | Water | Watermill | ||
| Dixton Mill, Dixton | Dixton | Monmouthshire | United Kingdom | Water | Watermill | Mally Brook | |
| Fernside Paper Mill, Whitebrook | Whitebrook, Trellech United | Monmouthshire | United Kingdom | Water | Watermill | Paper mill | White Brook |
| Furnace mill, Redbrook | Redbrook | Monmouthshire | United Kingdom | Water | Watermill | Forge mill | Red Brook |
| Gelli-groes Mill, Gelli-groes | Pontllanfraith | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Sirhowy |
| Lady Mill, Mounton | Mounton, Mathern | Monmouthshire | United Kingdom | Water | Watermill | Paper mill | Mounton Brook |
| Lark Mill, Mounton | Mounton, Mathern | Monmouthshire | United Kingdom | Water | Watermill | Paper mill | Mounton Brook |
| Linnet Mill, Mounton | Mounton, Mathern | Monmouthshire | United Kingdom | Water | Watermill | Paper mill | Mounton Brook |
| Llancayo Mill, Llancayo | Llancayo, Gwehelog Fawr | Monmouthshire | United Kingdom | Wind | Tower mill | Corn mill | |
| Llanhilleth Mill, Glandwr | Glandwr, Llanhilleth | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Ebwy |
| Llanyrafon Mill, Llanyrafon | Llanyrafon | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Lwyd (Grey) |
| Lower Mill, Redbrook | Redbrook | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Swan Brook |
| Mathern Mill, Mathern | Mathern | Monmouthshire | United Kingdom | Steam, Water | Watermill | Corn mill | Mounton Brook |
| Monnow Mill, Monmouth | Monmouth | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Monnow |
| Monnow Mill, Monmouth | Monmouth | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Monnow |
| Newton Mill, Dixton | Dixton | Monmouthshire | United Kingdom | Water | Watermill | Mally Brook | |
| Perthyre Mill, Rockfield | Rockfield, Llangattock-vibon-avel | Monmouthshire | United Kingdom | Water | Watermill | Corn mill, Fulling mill, Paper mill | Monnow |
| Rockfield Mill, Rockfield | Rockfield, Llangattock-vibon-avel | Monmouthshire | United Kingdom | Water | Watermill | Corn mill, Fulling mill | Tributary to Monnow |
| Ruthlin Mill, Rockfield | Rockfield, Llangattock-vibon-avel | Monmouthshire | United Kingdom | Water | Watermill | Corn mill, Paper mill | Monnow |
| Sharpe's Steam Flour Mill, Chepstow | Chepstow | Monmouthshire | United Kingdom | Steam | Corn mill | ||
| Skenfrith Mill, Skenfrith | Skenfrith | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Monnow |
| Sudbrook Paper Mill, Sudbrook | Sudbrook, Portskewett | Monmouthshire | United Kingdom | Water | Watermill | Paper mill | Severn |
| Sunnyside Paper Mill, Whitebrook | Whitebrook, Trellech United | Monmouthshire | United Kingdom | Water | Watermill | Paper mill | White Brook |
| The Glynn Paper Mill, Whitebrook | Whitebrook, Trellech United | Monmouthshire | United Kingdom | Water | Watermill | Paper mill | White Brook |
| Tower mill, Rogiet | Rogiet | Monmouthshire | United Kingdom | Wind | Tower mill | Corn mill | |
| Tre-Rhew Mill, Caggle Street | Caggle Street | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Tre-Rhew Brook |
| Upper Forge Mill, Redbrook | Redbrook | Monmouthshire | United Kingdom | Water | Watermill | Forge mill | Red Brook |
| Watermill, Blackwood | Blackwood | Monmouthshire | United Kingdom | Water | Watermill | ||
| Watermill, Blast Furnace | Blast Furnace | Monmouthshire | United Kingdom | Water | Watermill | Forge mill | |
| Watermill, Little Mill | Pontypool | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Berthin Brook |
| Wye Valley Mills, Redbrook | Redbrook | Monmouthshire | United Kingdom | Water | Watermill | Corn mill | Red Brook |
| Wye Valley Paper Mills, Whitebrook | Whitebrook, Trellech United | Monmouthshire | United Kingdom | Steam, Water | Watermill | Paper mill | White Brook |