Carn Eige (Scottish Gaelic: Càrn Èite) is a mountain in the Northwest Highlands of Scotland. Rising to 1,183 metres (3,881 ft) above sea level, it is the highest mountain in Scotland north of the Great Glen, the twelfth-highest in the British Isles, and, in terms of relative height (topographic prominence), it is the second-tallest mountain in the British Isles after Ben Nevis (its "parent peak" for determination of topographic prominence). Carn Eige lies between Glen Affric and Loch Mullardoch, and is at the heart of a massif along with its twin peak, the 1,181-metre (3,875 ft) Mam Sodhail.

Administratively, it is in the Highland council area, on the boundary between the historic counties of Inverness and Ross and Cromarty, on the former lands of the Clan Chisholm. The mountain is difficult to access, being ten kilometres (6 mi) from the nearest road, and its sub-peak to the north, Beinn Fhionnlaidh, is even more inaccessible.