Blaengwrach (/blaɪnˈɡrɑːx/ blyne-GRAHKH,[1][2] Welsh: [ˌblainˈɡwraːχ]) is a community near Glynneath and Resolven in the county borough of Neath Port Talbot, Wales.

The principal settlement is Cwmgwrach, a village on the south side of the Neath valley, of which the eastern end is called Blaengwrach, which sometimes causes confusion.

Craig-y-Llyn is the highest point in the old county of Glamorgan, and is home to a nature reserve containing Llyn Fach and a Site of Special Scientific Interest.

[4] The village itself was once an active commercial centre, servicing the coalmines, but now contains one shop, a single pub and a rugby union club, Cwmgwrach RFC.

Other community facilities include Blaengwrach Primary School, St Mary's Church in Wales, the 13th Afannedd (Cwmgwrach) Scout group, and the Welfare Hall.

The Neath and Tennant Canal once reached to Glyn-neath, and has been restored to provide over four miles of walkable towpath between Resolven and Glynneath.