Arranmore

Árainn Mhór
Arranmore
Island
Aerial view of Arranmore (left)
Árainn Mhór
Location in Ireland
Coordinates: 54°59′22″N 8°31′51″W / 54.98953°N 8.53089°W / 54.98953; -8.53089
CountryIreland
ProvinceUlster
CountyCounty Donegal
BaronyBoylagh
DistrictThe Rosses
Government
 • Dáil ÉireannDonegal
Area
 • Total
22 km2 (8.5 sq mi)
Population
 (2022)
 • Total
478
 • Density22/km2 (56/sq mi)
Time zoneUTC+0 (WET)
 • Summer (DST)UTC-1 (IST (WEST))
Irish Grid ReferenceB665155
Árainn Mhór is the only official name. The anglicised spelling 'Arranmore' has no official status.

Árainn Mhór (English name: Arranmore) is an island off the west coast of County Donegal, Ireland. It is the county's largest inhabited island, with a population of 478 in 2022, but has had a gradually falling native population since the 1990s. Its main settlement is Leabgarrow. The island is part of the Gaeltacht, with most of the inhabitants speaking Ulster Irish.

It is also known in English as Aran Island (not to be confused with the Aran Islands off Galway Bay or the Scottish Isle of Arran). In Irish it was traditionally called Árainn; the adjective mór (large) was added fairly recently. It was also sometimes called Árainn Uí Dhomhnaill, 'Aran of the O'Donnells'.