Garndiffaith is a village situated between Talywain and Varteg in Monmouthshire. It is three miles north of the town of Pontypool and 3½ miles south of the World Heritage Site of Blaenavon. The village is now part of the Abersychan suburb of Pontypool which also includes Cwmavon, Pentwyn, Talywain, Varteg, and Victoria Village.
Situated near the old British coal mines and works, the Garndiffaith area is renowned for its agricultural and industrial heritage based on mining of iron and coal. The adjacent former British Coal Corporation land is known as 'The Balance' after the Water Balance winding mechanism.
Garndiffaith has a few small shops, a Public house and a police station. Garnteg has been the local primary school since it was opened in 1995, when Varteg and Garndiffaith primary schools merged. Garndiffaith primary was later demolished and a new community hall was opened on the site.
Garndiffaith RFC is a the local rugby union club.
- Location map: 51°44’6"N, 3°3’59"W