Coordinates: 52°08′20″N 4°09′43″W / 52.139°N 4.162°W
Cribyn is a small village in Ceredigion, Wales, about 7 miles (11 km) north of Lampeter and with the villages of Troed y Rhiw, Mydroilyn and Dihewyd to the north.
Once a thriving community with two pubs, a garage and a post office, it is now largely reduced to a dormitory town or commuter village for Lampeter.
The primary school in the village, founded by local hero Gwilym Butler-Wilkins, has maintained its status as primarily Welsh speaking since its establishment in 1876.
Cribyn has one of the few Unitarian chapels in Ceredigion, which was established in 1790 by Dafydd Davis Castellhywel and Evan Davies, Cwmbedw. There was an old cottage next to the Nonconformist chapel which was older than the chapel, and a school was held here for many years until the primary school was founded.
Four parishes meet in Cribyn, and most parishioners went to the parish church in Llanfihangel Ystrad until the present church was established at the end of the 19th century.
Cribyn is a mountain in the Brecon Beacons with an elevation of 2608 feet (or 795 metres) about 300 feet lower than the neighbouring peaks of Pen y Fan and Corn Du. It is a prominent peak in the long and impressive escarpment facing north and running roughly east-west of the central section of the Brecon Beacons.
The summit lies on a ridge stretching from Talybont Reservoir in the east, to the A470 road. The ridge line to the west connects Cribyn with the peak of Pen y Fan. To the east, the ridge line descends to Bwlch ar y Fan, a col crossed by an ancient trail sometimes known as 'The Gap Road' before ascending again to the peak of Fan y Big.
In common with other peaks of the Brecon Beacons, the upper slopes of Cribyn are formed from sandstones of the Brownstones Formation of the Old Red Sandstone laid down during the Devonian period. The lower slopes of the hill are formed from sandstones and mudstones of the underlying Senni Beds Formation. The rock strata tilt gently southward like the rest of the peaks in the range. The heads of Cwm Sere and Cwm Cynwyn, to the northwest and east of Cribyn respectively, nurtured small glaciers during the last ice age and there are rock moraines at the foot of the cliffs. The glacial erosion resulted in the very steep northern and eastern faces which the hill possesses.