Fan Frynych is a subsidiary summit of Fan Fawr in the Fforest Fawr section of the Brecon Beacons National Park, South Wales. It makes up half of the Craig Cerrig-gleisiad and Fan Frynych National Nature Reserve with its sister peak Craig Cerrig-gleisiad. The summit is marked by a trig point, where the northern face of Craig Cerrig-gleisiad can be viewed.
