Glas Bheinn is a Graham of 731.5 m in Highland. All four of its nearest neighbours are higher, up to Meall na Teanga at 916.8 m.
On the Grahams height ladder it sits between Beinn na Caillich (Highland, NG601232) (732.1 m) and Beinn na Caillich (Highland, NG770229) (731.4 m). The higher hill nearest to it, Geal Charn, is a Corbett, 2.8 km to the north-west.