Y Garn is a mountain in Snowdonia, north Wales, part of the Glyderau. It is one of the Welsh 3000s - the 14 mountains in Wales over 3,000 ft in height.
The south-westerly side of the mountain slopes gently down to the Nant Peris valley. The other, north-easterly side is of a different character, consisting of two steeply sided cwms, Cwm Clyd and Cwm Cywion, and finally Llyn Idwal and Ogwen Cottage. Along the ridge to the north lies Elidir Fawr, while to the south-east is the top of the Devil's Kitchen and Glyder Fawr.