Coordinates: 51°36′56″N 3°46′18″W / 51.615511°N 3.771745°W
Cwmavon (Welsh: Cwmafan) is a large village and community in the Afan valley in Wales, lying within Neath Port Talbot County Borough. It has a population of 5,603, increasing slightly to 5,615 at the 2011 Census. In many ways it is a suburb of the nearby town of Port Talbot which is less than 2 miles (3.2 km) to the south, but it is separated from the town by the local geography. The literal translation of Cwmafan from Welsh to English is 'Valley of the River Afan', Cwm meaning valley and Afan being the name of the river.
The village is surrounded by hills, the biggest being Foel Fynyddau which stands 370 m (1200 ft) high and lies on the northern edge of the village. West of Foel Fynyddau is Mynydd-y-Gaer, the summit of which is where the community boundaries of Cwmavon, Baglan and Briton Ferry all meet. The River Afan runs through the village from North East to South West. The area of Ynysygwas lies to the east of the village, Brynbryddan to the West and Pwllyglaw to the North.