Coordinates: 53°36′04″N 1°57′36″W / 53.601°N 1.960°W
The Marsden Moor Estate is a large expanse of moorland situated in the Pennines, between the conurbations of West Yorkshire and Greater Manchester in the north of England. It is named after the adjacent small town of Marsden, and is owned and administered by the National Trust to whom it was conveyed in 1955 by the Radcliffe family in lieu of death duties.
The estate covers some 2,429 ha (5,685 acres) of unenclosed common moorland and almost surrounds Marsden. It forms the most northerly section of the Peak District National Park. The landscape is made up of valleys, peaks and crags and has long been modified by man. The fact that Marsden forms the eastern gateway to the important Standedge crossing of the moors has resulted in the presence of transport related archaeological remains dating from pre-Roman times to the great engineering structures of the canal and railway ages. The moors have also been used as a water catchment area since the Victorian era, and several reservoirs are present, along with their associated catchwaters.