Hay-on-Wye, known locally as Hay, is a market town and community in Powys, Wales, in the historic county of Brecknockshire. With over twenty bookshops, it is often described as a "town of books"; it is both the National Book Town of Wales and the site of the annual Hay Festival.

Powys is a county and preserved county in Wales. It borders Gwynedd, Denbighshire, and Wrexham to the north; the English ceremonial counties of Shropshire and Herefordshire to the east; Monmouthshire, Blaenau Gwent, Merthyr Tydfil, Caerphilly, Rhondda Cynon Taf, and Neath Port Talbot to the south; and Carmarthenshire and Ceredigion to the west. The largest settlement is Newtown, and the administrative centre is Llandrindod Wells.