| Name | Location | County | Country | Power source | Type | Function | River |
| Killaworgey Mill, St Columb Major | St Columb Major | Cornwall | United Kingdom | Water | Watermill | Corn mill | |
| Lower Mill, St Columb Major | St Columb Major | Cornwall | United Kingdom | Water | Watermill | Corn mill | |
| Reterth Mill, St Columb Major | St Columb Major | Cornwall | United Kingdom | Water | Watermill | Corn mill | |
| Rosewastis Estate Mill, St Columb Major | St Columb Major | Cornwall | United Kingdom | Water | Watermill | Farm mill | |
| Tresaddern Mill, St Columb Major | St Columb Major | Cornwall | United Kingdom | Water | Watermill |
