Arran or the
Isle of Arran (; ) is the largest island in the
Firth of Clyde, Scotland. With an area of it is the seventh largest Scottish island. It is in the
unitary council area of
North Ayrshire. In the 2011 census it had a resident population of 4,629. Although it is culturally and physically similar to the
Hebrides, it is separated from them by the
Kintyre peninsula. Arran is divided into highland and lowland areas by the
Highland Boundary Fault and it has been described as a "geologist's paradise".