Llangua (Welsh: Llangiwa) is a village in Monmouthshire, south-east Wales, United Kingdom.
Llangua is located nine miles north-east of Abergavenny on the A465 road.
Nearby Pontrilas just inside Herefordshire on the Welsh Marches Line has a potential location of a re-opened station.
Llangua sits just inside the border with England on the Welsh bank of the River Monnow. The village has a parish church. Grosmont is one mile to the south-east.
Coordinates: 51°55′45″N 2°53′08″W / 51.92918°N 2.88564°W / 51.92918; -2.88564