Dorchester is a civil parish in Westmorland County, New Brunswick, Canada. For governance purposes it is divided between the city of Dieppe; the villages of Dorchester and Memramcook; the Indian reserve of Fort Folly 1; and the local service district of the parish of Dorchester, which further includes the special services area of Calhoun Road. All governance units except the Indian reserve are members of the Southeast Regional Service Commission.