Nercwys is a rural village and community in Flintshire, Wales, which is surrounded by open countryside. The community population taken at the 2011 census was 585. The older, Anglicised spelling of Nerquis can sometimes be found. It has a small school and a local bus service to Mold which is around 3 miles away.
Nercwys lies on the eastern fringe of the Clwydian Range and is served by a network of lanes. The modern settlement straggles along a shelf that interrupts the prevailing south-west to north-east slope. The River Terrig, a tributary of the Alyn, runs northwards less than one kilometre to the east.