Blandford St Mary is a village and civil parish in the North Dorset district of Dorset, England. The village is on the south bank of the River Stour, immediately opposite the larger town of Blandford Forum. The village grew up around the Badger Brewery, owned by Hall and Woodhouse, which is based there. At the 2001 census it had a population of 1,233. The appropriate electoral ward is called 'Portman' with naturally the most populous area being south of the river.