Duffield Hall is a 17th-century country house situated in the Amber Valley, Derbyshire and the former headquarters of the Derbyshire Building Society. It is a Grade II* listed building.
The manor of Duffield was granted by King Charles I to the Newton family who built a new mansion house there in the 1620s. The Newtons sold the house to Henry Coape, High Sheriff of Derbyshire in 1703. His granddaughter and heiress brought the estate to her husband Henry Porter.