Alfriston is a village and civil parish in the East Sussex district of Wealden, England. The village lies in the valley of the River Cuckmere, about four miles (6 km) north-east of Seaford and south of the main A27 trunk road and part of the large area of Polegate. The parish had a population of 829 at the 2011 census.

Wealden is a local government district in East Sussex, England. Its council is based in Hailsham, the district's largest town. The district also includes the towns of Crowborough, Polegate and Uckfield, along with numerous villages and surrounding rural areas. The district's name comes from the Weald, the landscape and ancient woodland which occupies much of the centre and north of the area.