Sandleford is a hamlet and former parish in the English county of Berkshire. The settlement is now within the civil parish of Greenham, and is located approximately 1.5 miles (2.4 km) south of the town of Newbury.
It measures about 520 acres, most of which is taken up with the fields and copses to the west of the Priory. A census taken in 1801 showed Sandleford to have three houses, three families and 18 people.
At the same time Newbury comprised 931 houses, 34 empty houses, 971 families and 4275 people. John Marius Wilson in his Imperial Gazetteer of England and Wales, 1870–72, gave Sandleford as having Real property £775; of which £10 are in fisheries, and a population of 49 in nine houses, but in 1881 the population of Sandleford had shrunk to 34. In 1615 it was separated from the manor and parish of Newbury, and the adjacent Wash Common and became extra-parochial, as described by Sir Francis More, Kt, of Fawley, it was to be: no part of the Parish of Newbury, nor to be so reputed. At some point after 1924 it was subsumed into the parish of Greenham. Currently underway is a development proposal by Bloor homes and Donnington New homes for 1500 new homes to be built on the site.