Hadleigh is an ancient market town and civil parish in the Babergh district of Suffolk, England. The town is situated next to the River Brett, between the larger towns of Sudbury and Ipswich. It had a population of 8,253 at the 2011 census. The headquarters of Babergh District Council were located in the town until 2017.

Babergh District is a local government district in Suffolk, England. In 2021 it had a population of 92,300. The district is primarily a rural area, containing just two towns, Sudbury and Hadleigh, which was the administrative centre until 2017 when the council moved to shared offices with neighbouring Mid Suffolk District Council in Ipswich, outside either district. The district is named after the medieval Babergh Hundred, which covered part of the area.