Mappowder is a village and civil parish in the county of Dorset in southern England. It lies within the North Dorset administrative district, approximately 9 miles (14 km) south-east of the town of Sherborne. The parish covers about 1,900 acres (770 ha) at an altitude of 75 to 160 metres (246 to 525 ft). It is sited on Corallian limestone soil at the southern edge of the Blackmore Vale, close to the northern scarp face of the Dorset Downs.