Beaminster is a town and civil parish in Dorset, England, situated in the Dorset Council administrative area approximately 15 miles northwest of the county town Dorchester. It is sited in a bowl-shaped valley near the source of the small River Brit. The 2013 mid-year estimate of the population of Beaminster parish is 3,100.
Beaminster is the product of the Anglo-Saxon age, dating back to around the 7th century, when it was known as Bebingmynster, meaning the church of Bebbe although the date of origin of the town is unknown. The place name and historic evidence indicates that it was probably the site of a primary Saxon minster church and was at the centre of a large episcopal estate. These are likely to have acted as a focus for a settlement, but evidence of its formation is lacking.
In its history Beaminster has been a centre of manufacture of linen and woollens, the raw materials for which were produced in the surrounding countryside. The town experienced three serious fires in the 17th and 18th centuries; the first of these, during the English Civil War, almost destroyed the fabric of the town.
Beaminster parish church is notable for its architecture, particularly its tower.