Duffield is a village in the Amber Valley district of Derbyshire, 5 miles (8.0 km) north of Derby. It is centred on the western bank of the River Derwent at the mouth of the River Ecclesbourne. It is within the Derwent Valley Mills World Heritage Area and the southern foothills of the Pennines.

Amber Valley is a local government district with borough status in the east of Derbyshire, England, taking its name from the River Amber. Its council is based in Ripley. The district covers a semi-rural area lying to the north of the city of Derby. The district contains four main towns whose economy was based on coal mining and remains to some extent influenced by engineering, distribution and manufacturing, holding for instance the headquarters and production site of Thorntons confectionery.