Tonmawr is a village in Neath Port Talbot county borough, south Wales. It is located around four miles east of Neath.
The village is home to a rugby union team (Tonmawr RFC), a primary school, a community centre, and the Pelenna Mountain Centre.
Coordinates: 51°39′08″N 3°44′22″W / 51.65222°N 3.73944°W