Llanhilleth (Welsh: Llanhiledd) is a village, community and an electoral ward on the A467 road between Ebbw Vale and Crumlin in Blaenau Gwent, Wales.

It is in the benefice of Abertillery with Cwmtillery with Llanhilleth with Six Bells, in the deanery of Pontypool, and was built in 1898.

The name comes from Llanheledd (Welsh for 'church of Saint Heledd'), with the /i/ replacing the original /e/ due to the regional dialect of the area (Gwenhwyseg) changing the /e/ sound to /i/.

The village contains the Miners Institute, which provides many essential ceremonies for locals, such as Weddings, Christenings and Funeral Receptions.

The Llanhilleth Rugby Club sits along a road sprouting off the A467, at the entrance from Crumlin.