Cusop is a village and civil parish in Herefordshire, England that lies next to the town of Hay-on-Wye in Wales. It is a short walk from Hay, the distance between bus stops, it can reached by walking or driving out of Hay towards Bredwardine, and turning right into Cusop Dingle.
The writer L.T.C. Rolt lived here between 1914 and 1922, in a house then known as Radnor View, in a development locally called "Thirty Acres". Spending his early boyhood here, he went on to co-found the Inland Waterways Association and the Talyllyn Railway Preservation Society, and to write many books on transport, engineering biography and industrial archaeology.
The village is recorded in Domesday Book as "Cheweshope".
The Manor of Cusop formed part of the Ewyas Lacy Hundred and was once owned by the Clanowe Family, Edward III, Henry ap Griffith, Vaughans of Moccas and the Cornewall Family, lastly George Cornewall.