Graigwen (English translation = White-Rock) is the name of the large hill (Graigwen Hill) and the village or district located thereon, sited to the north of Pontypridd town centre and south of Glyncoch and Ynysybwl in the county borough of Rhondda Cynon Taf, Wales, and within the ancient parish of Llanwonno (Llanwynno).

It falls within the Rhondda and Pontypridd Town electoral wards, and comprises the sub-districts of Pantygraigwen, Penygraigwen, the Whiterock Estate, and Lanwood.

Graigwen was once home to the Daren-Ddu Colliery located in Lan Wood and numerous coal levels and stone quarries were cut into its hillsides.

The large adjoining Craig-yr-Hesg quarry in neighbouring Glyncoch historically supplied much of Pontypridd's buildings with their finely dressed stone, and continues to do so today.

Also in this area once was located the infamous Rhondda Cutting to the Taff Vale Railway which featured in the nearby rail accident at Hopkinstown in 1911.