Arne is a village and civil parish in the Purbeck district of Dorset, England; situated east of Wareham. The village is situated on the Arne Peninsula, which protrudes into Poole Harbour opposite the town of Poole.
Besides the village and peninsula of Arne, the civil parish includes a significant area to the west of Arne and south and west of Wareham, including the villages of Stoborough, Stoborough Green, Ridge, and Worgret (the last three redirected here), and has an area of 24.83 square kilometres. At the time of the UK 2011 census, the parish had a population of 1,297. Since 1974 the parish has formed part of the Purbeck local government district.