Glyder Fach is a mountain in Snowdownia, in the county of Conwy, Wales. It is 994 m (3261 feet) high and is the 2nd highest of the Glyderau range and the 6th highest in Wales. Close to the summit lies Cantilever Stone, a popular spot for photographers. Castell y Gwynt is another significant feature and is situated in the western side of the mountain. There are some exposed and rocky sides of climbing, especially the upper pitch of Sinister Gully and in Great Pinnacle Gap.