Picket Twenty is a suburb of Andover, in the Test Valley district of Hampshire, England.

On the 1888 OS map, only the farmstead of "Picket Twenty Farm" is drawn, although "Pavey's Farm" is relatively nearby"[1] Just thirteen dwellings are listed for Picket Twenty in the 1962 Kelly's Directory of Andover, it appears this number remained constant until 2008.

After 2017 in a further phase of development, housing was built beneath Andover Down, and relatively close to Harewood forest.

[4] Although an expansion of Andover, the Picket Twenty development is detached from the urban area, with a large sports ground providing a natural barrier.

In 2018 Cotswold Archaeology were excavating Bronze Age barrow sites prior to house building on that part of the development.