Coordinates: 53°05′49″N 1°22′48″W / 53.097°N 1.380°W / 53.097; -1.380

Alfreton is a town and civil parish in Amber Valley, Derbyshire, England, adjoining the Bolsover and North East Derbyshire districts. It was formerly a Norman Manor and later an Urban District. The population of the Alfreton Ward was 7,928 at the 2001 Census. The villages of Ironville, Riddings, Somercotes and Swanwick were historically part of the Manor and Urban District, and the population including these was 24,476 in 2001.

The main industry of Alfreton was historically coal mining but after the mines closed in the 1960s it changed to light industry, warehousing, retailing and the service sector. A substantial proportion of local jobs are in the latter, such as health, education and leisure. A significant but declining proportion of the area is still agricultural. Alfreton town is a busy urban centre with a number of national chain stores, along with independents and charity shops, but is dominated by a large branch of Tesco. There are several banks, building societies, estate agents and other services. There is an indoor market, library, two post offices, job centre and numerous pubs and food outlets. There is a health centre, a leisure centre, swimming pool and park at the west end of the town, and a golf course outside the town to the west.