Dartmoor Preservation Association (DPA) is one of the oldest environmental or amenity bodies in the UK. It was founded in 1883. It concerns itself with Dartmoor, a National Park in Devon, south-west England. It began with two main areas of concern. Firstly, commoners' rights were being eroded through army use, including the firing of live artillery shells, and piecemeal enclosure of land around the margins. Secondly, there was increasing public interest in Dartmoor's scenery, archaeology, history and wildlife
The DPA has opposed what it considered to be unsuitable developments on Dartmoor throughout its history. In its founding year, the secretary, Robert Burnard persuaded the War Department not to fire on the Okehampton Firing Range on Saturdays to allow access to the public. Many battles have been fought since, particularly against the military presence and the proposed building of reservoirs on the moor, notably under the Chairmanship of Lady Sayer, granddaughter of Robert Burnard.