Abertillery is a town and community in Blaenau Gwent County Borough, Wales. It is located in the Ebbw Fach valley, and the historic county of Monmouthshire. The surrounding landscape borders the Brecon Beacons National Park and the Blaenavon World heritage Site. Formerly a major coal mining centre the Abertillery area was transformed in the 1990s using EU and other funding to return to a greener environment.