Llanddewi Skirrid (Welsh: Llanddewi Ysgyryd) is a village in Monmouthshire. Llanddewi Skirrid is located 3 miles (4.8 km) north east of Abergavenny on the old B4521 road to Ross-on-Wye. The Skirrid mountain overlooks the village and parish. The Skirrid is a stand alone mountain, an outlier of the Black Mountains, Wales and the most easterly mountain within the Brecon Beacons National Park.