Knighton /ˈnaɪtən/ (Welsh: Tref-y-clawdd Welsh pronunciation: [trɛvəˈklauð] or Trefyclo) is a small market town and community situated chiefly in Powys, Wales, within the historic county boundaries of Radnorshire. Lying on the River Teme, the town straddles the English-Welsh border; Knighton railway station, as well as a small part of the town's built-up area, is located in Shropshire, England. Knighton is the sixth largest town in Powys.