Unstone is a village and civil parish in the English county of Derbyshire, in the North East Derbyshire administrative district approximately 1 mile south east of Dronfield. It is also close to the town of Chesterfield. The River Drone and the Midland Main Line railway run through the village, which has a population of over 1,000, increasing to 1,876 and including Apperknowle at the time of the 2011 Census.