Puncheston

• Country — Wales • Static Image — Puncheston aerial November 2021.jpg • Static Image Caption — Aerial view of the village, looking northeast • Official Name — Puncheston • Welsh Name — Cas-mael • Population — 568 • Population Ref — (2011) • Unitary Wales — Pembrokeshire • Constituency Westminster — Preseli Pembrokeshire • Constituency Welsh Assembly — Ceredigion Penfro • Post Town — Haverfordwest • Postcode District — SA62 • Postcode Area — SA • Os Grid Reference — SN007297 Puncheston (Cas-mael or Casmael) is a village, parish and community in Pembrokeshire, southwest Wales. It sits below the mountain known as Castlebythe (Cow Castle), one of the peaks in the Preseli Mountains, just outside the Pembrokeshire Coast National Park.

A map of 1578 shows the parish as Castle Male, presumably a phonetic spelling of the Welsh name by the English mapmaker. Lewis's Topographical Dictionary of 1844 gives 326 inhabitants (the 1849 edition gives 255) for the parish, which includes the village and a number of outlying residences and farms. Lewis surmises that the original name was Castell Mael, deriving from an ancient encampment of which there are remains. A railway passed through the parish in the 19th and 20th centuries, with a halt at the village.

The Community of Puncheston consists of the villages of Puncheston, Henry's Moat, Little Newcastle, Castlebythe, Morvil and Tufton. Henry's Moat Electoral Ward returns two councillors to Pembrokeshire County Council, and Puncheston Ward four.

Puncheston County Primary School is in the village.

• Bartholomew Roberts (1682–1722), pirate, known as 'Black Bart' (Barti Ddu), was born in Casnewydd Bach near Puncheston. • John Gambold (1711-1771), bishop of the Unitas Fratrum, was born in Puncheston, where his father was rector.