Herbrandston is a village, parish, and community situated on the north side of the River Cleddau in Pembrokeshire, Wales. Geographically, it is positioned to the west of Milford Haven and Hakin and to the east of St Ishmael's.
The village underwent significant demographic growth following the construction of the ESSO oil refinery prior to 1960. While the population was only 200 before this period, the development of associated housing estates caused the size of the village to increase rapidly within a few years. As of current records, Herbrandston has a population of 397, with 15 per cent of the residents being Welsh-speaking.