| Name | Location | County | Country | Power source | Type | Function | River |
| Dicker Mill, Hertford | Hertford | Hertfordshire | United Kingdom | Water | Watermill | Oil mill | |
| Sele Mill, Hertford | Hertford | Hertfordshire | United Kingdom | Steam, Water | Roller flour mill, Watermill | Corn mill | Lee |
| Town Mill, Hertford | Hertford | Hertfordshire | United Kingdom | Water | Watermill |