Stourpaine is a village and civil parish in the ceremonial county of Dorset in southern England. It is situated in the valley of the River Stour in the Dorset administrative district, three miles northwest of Blandford Forum. The A350 road, which connects Blandford to Shaftesbury to the north, passes through the village. The chalk hills of Cranborne Chase and the Dorset Downs lie immediately northeast and southwest respectively.