Trefnant is a village and community in Denbighshire, Wales. It is located on the A525 road in the Vale of Clwyd (Dyffryn Clwyd), about halfway between St Asaph (Llanelwy) to the north and Denbigh to the south. At the 2001 Census, the community had a population of 1,409, increasing to 1,581 at the 2011 Census.Welsh language author and polemicist Emrys ap Iwan was a minister at Trefnant at the end of the 19th century.Trefnant railway station served the village.