Godmanstone (or Godmanston) is a village and civil parish in the county of Dorset in southern England, situated in the West Dorset administrative district approximately 4 miles (6.4 km) north of the county town Dorchester. Its name means Godman's Farm and it is sited by the River Cerne amongst chalk hills of the Dorset Downs. Dorset County Council's latest (2013) estimate of the parish population is 130. In the 2011 census the population of Godmanstone parish combined with the small adjoining parish of Nether Cerne was 156.