Treforest is a village in the south-east of Pontypridd, in the county borough of Rhondda Cynon Taf, Wales. It is situated in the Treforest electoral ward, along with the village of Glyntaff. It is part of the Pontypridd Town community. Treforest runs along the west bank of the River Taff, while Glyntaff runs along its east bank.