Cnap Cruinn is a Graham of 741.9 m in Highland. All four of its nearest neighbours are higher, up to Stob Coire Easain at 1,116.2 m.
It sits below Cruach Innse, only 2.5 km to the south-west and 115.1 m higher. All four of its nearest neighbours lie to the south, so it stands at the northern edge of its group. On the Grahams height ladder it sits between Pap of Glencoe (742.4 m) and Sgurr Dearg (741.6 m). The higher hill nearest to it, Cruach Innse, is a Corbett, 2.5 km to the south-west.
