Pertwood is an ancient settlement and former civil parish, near Warminster in the county of Wiltshire in the west of England.

[1] Its land and houses now lie in the parishes of Brixton Deverill, East Knoyle, Sutton Veny and Chicklade, and have fewer than twenty inhabitants.

[4] In 1808, a topographer wrote of Pertwood that it was "...a decayed parish in the hundred of Warminster... containing 2 houses and 15 inhabitants".

[2] That volume recounts the owners of the manor, including John Benett of Pythouse (from 1805 to 1810) and Percy Wyndham (followed by his son and grandson, in all 1877 to 1919).

Colonel Scrope Egerton owned Pertwood Manor Farm from 1945 until his death in 1986; he was married to Marjorie, a sister of John Morrison, 1st Baron Margadale, owner of the Fonthill House estate.

It was originally a small 12th-century stone building entered by a round-headed door on its south side, but in about 1812 it was "restored" by the then lord of the manor, Richard Ricward, so that by 1822 there was nothing ancient to be seen, except one stoop.

[15] Upper Pertwood, on high downland in the southern half of the former parish, is approached by a drive from the A350 road and consists of the original manor house, known as Manor Farm, five farm cottages, and other buildings, all now in the parish of Chicklade.

[16] The organic farming model was introduced by Mark Houghton Brown, largely to conserve the thin soil, and was continued by him until 2005 and thereafter by new owners.

[18] Lancelot Morehouse, a 17th-century Rector of Pertwood, has been described as John Aubrey's "most familiar learned acquaintance".

[19] Percy Scawen Wyndham (1835–1911), a younger son of the first Lord Leconfield, owned Pertwood from 1877 until his death in 1911.