Cribarth (nicknamed the Sleeping Giant)[1] is a hill in the Brecon Beacons National Park, Powys, Wales, in the traditional county of Brecknockshire.

To its west is a 426-metre-high (1,398 ft) rounded top at SN 829144 which lies just to the northwest of a mile-long ridge that forms the main bulk of the hill.

Numerous crags, restricted areas of broken limestone pavement and shakeholes adorn the slopes of this hill as do various man-made features relating to its geology and described below.

Several kilometres (miles) of abandoned tramroads weave around the hill and two major inclines link this high-level network to the former Swansea Canal in the Tawe valley below.

Various public footpaths and bridleways provide access over its lower slopes from the communities in the upper Swansea Valley such as Abercraf, Ynyswen and Pen-y-cae.