Carnedd Dafydd

Carnedd Dafydd is a mountain peak in the Carneddau range in Snowdonia, north Wales, and is the third highest peak in Wales, or the fourth if Crib y Ddysgl on the Snowdon ridge is counted.

Carnedd Dafydd is on the main ridge of the Carneddau, south-west of Carnedd Llywelyn and north of Pen yr Ole Wen. It is thought to have been named after the Welsh prince Dafydd ap Llywelyn, son of Llywelyn the Great. It is usually climbed by first ascending Pen yr Ole Wen and then following the ridge along to Carnedd Dafydd, though it is also possible to make a direct ascent from Tal y Llyn Ogwen, first following the stream, Afon Lloer, to the mountain lake of Ffynnon Lloer then climbing up the slope to the summit.

Like most of the summits in the Carneddau range, it has a flat, boulder-strewn summit plateau.