Chediston is a village and a civil parish on the B1123 road, in the East Suffolk district, in the English county of Suffolk. It is located 2 miles west of Halesworth, its post town. The population of the civil parish as of the 2011 census was 195 and in 2018 it was estimated to be 234. Chediston shares a parish council with the nearby villages of Linstead Magna and Linstead Parva.