Llangwm is a village and community in Conwy County Borough, in Wales. It is located in the valley of the Afon Medrad, close to the borders with Denbighshire and Gwynedd, 2.9 miles (4.7 km) south of Cerrigydrudion, 7.8 miles (12.6 km) west of Corwen and 27.9 miles (44.9 km) south east of Conwy. At the 2001 census the community had a population of 516, decreasing to 470 at the 2011 census. It is one of three communities in the Uwchaled ward, and includes the villages of Dinmael, Gellioedd, Glan-yr-afon, Llangwm, Maerdy and Ty-nant.