Grosmont is a village and community near Abergavenny in Monmouthshire, Wales. The population taken at the 2011 census was 920. The wider community (parish) includes the villages of Llangattock Lingoed, Llangua and Llanvetherine.

Monmouthshire is a county in the south east of Wales. It borders Powys to the north; the English counties of Herefordshire and Gloucestershire to the north and east; the Severn Estuary to the south, and Torfaen, Newport and Blaenau Gwent to the west. The largest town is Abergavenny, and the administrative centre is Usk.