Outer Hebrides in the context of Isle of Lewis

The British Isles are an archipelago in the North Atlantic Ocean off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Inner and Outer Hebrides, the Northern Isles (Orkney and Shetland), and over six thousand smaller islands. They have a total area of 315,159 km (121,684 sq mi) and a combined population of almost 75 million, and include two sovereign states, the Republic of Ireland (which covers roughly five-sixths of Ireland) and the United Kingdom of Great Britain and Northern Ireland. The Channel Islands, off the north coast of France, are normally taken to be part of the British Isles, even though geographically they do not form part of the archipelago. Under the UK Interpretation Act 1978, the Channel Islands are clarified as forming part of the British Islands, not to be confused with the British Isles.

The oldest rocks are 2.7 billion years old and are found in Ireland, Wales and the north-west of Scotland. During the Silurian period, the north-western regions collided with the south-east, which had been part of a separate continental landmass. The topography of the islands is modest in scale by global standards. Ben Nevis, the highest mountain, rises to only 1,345 metres (4,413 ft), and Lough Neagh, which is notably larger than other lakes in the island group, covers 390 square kilometres (151 sq mi). The climate is temperate marine, with cool winters and warm summers. The North Atlantic drift brings significant moisture and raises temperatures 11 °C (20 °F) above the global average for the latitude. This led to a landscape that was long dominated by temperate rainforest, although human activity has since cleared the vast majority of forest cover. The region was re-inhabited after the last glacial period of Quaternary glaciation, by 12,000 BC, when Great Britain was still part of a peninsula of the European continent. Ireland was connected to Great Britain by the British-Irish Ice Sheet before 14,000 BC, and was not inhabited until after 8000 BC. Great Britain became an island by 7000 BC with the flooding of Doggerland.

The Norse–Gaels (Old Irish: Gall-Goídil; Irish: Gall-Ghaeil; Scottish Gaelic: Gall-Gàidheal; Manx: Goal-Gael, 'foreigner-Gaels') were a people of mixed Gaelic and Norse ancestry and culture. They emerged in the Viking Age, when Vikings who settled in Ireland and in Scotland became Gaelicised and intermarried with Gaels. The Norse–Gaels dominated much of the Irish Sea and Scottish Sea regions from the 9th to 12th centuries. They founded the Kingdom of the Isles (which included the Hebrides and the Isle of Man), the Kingdom of Dublin, the Lordship of Galloway (which is named after them), and briefly ruled the Kingdom of York (939–944 AD). The most powerful Norse–Gaelic dynasty were the Uí Ímair or Ivar dynasty.

Over time, the Norse–Gaels became ever more Gaelicised and disappeared as a distinct group. However, they left a lasting influence, especially in the Isle of Man and Outer Hebrides, where most placenames are of Norse–Gaelic origin. Several Scottish clans have Norse–Gaelic roots, such as Clan MacDonald, Clan MacDougall and Clan MacLeod. The elite mercenary warriors known as the gallowglass (gallóglaigh) emerged from these Norse–Gaelic clans and became an important part of Irish warfare. The Viking longship also influenced the Gaelic birlinn and longa fada, which were used extensively until the 17th century. Norse–Gaelic surnames survive today and include MacIvor, MacAskill, and [Mac]Cotter.

The Inner Hebrides (/ˈhɛbrɪdiːz/ HEB-rid-eez; Scottish Gaelic: na h-Eileanan a-staigh, lit. 'the Inner Isles') is an archipelago off the west coast of mainland Scotland, to the south east of the Outer Hebrides. Together these two island chains form the Hebrides, which experience a mild oceanic climate. The Inner Hebrides comprise 35 inhabited islands as well as 44 uninhabited islands with an area greater than 30 hectares (74 acres). Skye, Mull, and Islay are the three largest, and also have the highest populations. The main commercial activities are tourism, crofting, fishing and whisky distilling. In modern times the Inner Hebrides have formed part of two separate local government jurisdictions, one to the north and the other to the south. Together, the islands have an area of about 4,130 km (1,594 sq mi), and had a population of 18,948 in 2011. The population density is therefore about 4.6 inhabitants per square kilometre (12 inhabitants per square mile).

There are various important prehistoric structures, many of which pre-date the first written references to the islands by Roman and Greek authors. In the historic period the earliest known settlers were Picts to the north and Gaels in the southern kingdom of Dál Riada prior to the islands becoming part of the Suðreyjar kingdom of the Norse, who ruled for over 400 years until sovereignty was transferred to Scotland by the Treaty of Perth in 1266. Control of the islands was then held by various clan chiefs, principally the MacLeans, MacLeods and MacDonalds. The Highland Clearances of the 19th century had a devastating effect on many communities and it is only in recent years that population levels have ceased to decline.

The Hebrides (/ˈhɛbrɪdiːz/ HEB-rid-eez; Scottish Gaelic: Innse Gall, pronounced [ˈĩːʃə ˈkaul̪ˠ]; Old Norse: Suðreyjar, lit. 'Southern isles') are the largest archipelago in the United Kingdom, off the west coast of the Scottish mainland. The islands fall into two main groups, based on their proximity to the mainland: the Inner and Outer Hebrides.

These islands have a long history of occupation (dating back to the Mesolithic period), and the culture of the inhabitants has been successively influenced by the cultures of Celtic-speaking, Norse-speaking, and English-speaking peoples. This diversity is reflected in the various names given to the islands, which are derived from the different languages that have been spoken there at various points in their history.

Scottish Gaelic (/ˈɡælɪk/ GAL-ik; endonym: Gàidhlig [ˈkaːlɪkʲ] ), also known as Scots Gaelic or simply Gaelic, is a Celtic language native to the Gaels of Scotland. As a member of the Goidelic branch of Celtic, Scottish Gaelic, alongside both Irish and Manx, developed out of Old Irish. It became a distinct spoken language sometime in the 13th century in the Middle Irish period, although a common literary language was shared by the Gaels of both Ireland and Scotland until well into the 17th century. Most of modern Scotland was once Gaelic-speaking, as evidenced especially by Gaelic-language place names.

In the 2011 census of Scotland, 57,375 people (1.1% of the Scottish population, three years and older) reported being able to speak Gaelic, 1,275 fewer than in 2001. The highest percentages of Gaelic speakers were in the Outer Hebrides. Nevertheless, there is a language revival, and the number of speakers of the language under age 20 did not decrease between the 2001 and 2011 censuses. In the 2022 census of Scotland, it was found that 2.5% of the Scottish population had some skills in Gaelic, or 130,161 persons. Of these, 69,701 people reported speaking the language, with a further 46,404 people reporting that they understood the language, but did not speak, read, or write in it.

This is a list of islands of Scotland, the mainland of which is part of the island of Great Britain. Also included are various other related tables and lists. The definition of an offshore island used in this list is "land that is surrounded by seawater on a daily basis, but not necessarily at all stages of the tide, excluding human devices such as bridges and causeways".

Scotland has around 900 offshore islands, most of which are to be found in four main groups: Shetland, Orkney, and the Hebrides, sub-divided into the Inner Hebrides and Outer Hebrides. There are also clusters of islands in the Firth of Clyde, Firth of Forth, and Solway Firth, and numerous small islands within the many bodies of fresh water in Scotland including Loch Lomond and Loch Maree. The largest island is Lewis and Harris, which extends to 2,179 km (841 sq mi), and there are a further 200 islands which are greater than 40 hectares (100 acres) in area. Of the remainder, several, such as Staffa and the Flannan Isles, are well-known, despite their small size. Some 101 Scottish islands are currently permanently inhabited, of which 96 are offshore islands. Between 2001 and 2011, Scottish island populations as a whole grew by 4% to 103,702 although by 2022 the total had fallen back to just under 103,000.

Scottish national identity, including Scottish nationalism, are terms referring to the sense of national identity as embodied in the shared and characteristic culture, languages, and traditions of the Scottish people. It includes the ethnic, cultural, or economic influences found in Scotland.

Although the various languages of Gaelic, Scots, and Scottish English are distinctive, people associate them all together as Scottish with a shared identity, as well as a regional or local identity. Parts of Scotland, like Glasgow, the Outer Hebrides, Orkney, Shetland, the northeast of Scotland, and the Scottish Borders, retain a strong sense of regional identity, alongside the Scottish national identity.

The Inner Seas off the West Coast of Scotland is a marine area designated by the International Hydrographic Organization (IHO). It consists of a number of waterbodies between the Scottish mainland, the Outer Hebrides islands, and the coast of Ireland.

Waterbodies within the Inner Seas include the Minch and Little Minch, the Sound of Harris, the Inner Sound, the Sea of the Hebrides, the Firth of Lorn, the Sound of Jura, the Firth of Clyde, Belfast Lough and the North Channel. The IHO defines the limits of the Inner Seas as follows:

Lewis and Harris (Scottish Gaelic: Leòdhas agus Na Hearadh), or Lewis with Harris, is a Scottish island in the Outer Hebrides, around 24 miles (39 km) from the Scottish mainland.

With an area of 841 square miles (2,178 km) (approximately 1% the size of Great Britain) it is the largest island in Scotland and the third largest in the British Isles, after Great Britain and Ireland.

Rockall (/ˈrɒkɔːl/) is a 17.15-metre-high (56 ft 3 in), uninhabitable granite islet in the North Atlantic Ocean. It is 301 kilometres (187 statute miles; 163 nautical miles) west of Soay, St Kilda, Scotland; 423 kilometres (263 statute miles; 228 nautical miles) north-west of Tory Island, Ireland; and 700 kilometres (430 statute miles; 380 nautical miles) south of Iceland. The nearest permanently inhabited place is in North Uist, 370 kilometres (230 mi; 200 nmi) east in Scotland's Outer Hebrides.

Rockall was formed during the Paleogene period, by magmatism as part of the North Atlantic Igneous Province. Rockall and Hasselwood Rock, 200 metres north, are the only emergent parts of Helen's Reef and the Rockall Plateau. Twenty-nine-metre waves just east of Rockall were reported in 2006 as the largest ever recorded by scientific instruments in the open ocean. Rockall's first named geographic location and only occupiable area is Hall's Ledge.

St Kilda (Scottish Gaelic: Hiort) is a remote archipelago situated 35 nautical miles (65 kilometres) west-northwest of North Uist in the North Atlantic Ocean. It contains the westernmost islands of the Outer Hebrides of Scotland. The largest island is Hirta, whose sea cliffs are the highest in the United Kingdom; three other islands (Dùn, Soay and Boreray) were also used for grazing and seabird hunting. The islands are administratively a part of the Comhairle nan Eilean Siar local authority area.

The origin of the name St Kilda is a matter of conjecture. The islands' human heritage includes unique architectural features from the historic and prehistoric periods, although the earliest written records of island life date from the Late Middle Ages. The medieval village on Hirta was rebuilt in the 19th century, but illnesses brought by increased external contacts through tourism, and the upheaval of the First World War, contributed to the island's evacuation. Permanent habitation on the islands possibly extends back two millennia, the population probably never exceeding 180; its peak was in the late 17th century. The population waxed and waned, eventually dropping to 36 in 1930, when the remaining population was evacuated. Currently, the only year-round residents are military personnel; a variety of conservation workers, volunteers and scientists spend time there in the summer months. The entire archipelago is owned by the National Trust for Scotland.

The Minch (Scottish Gaelic: A' Mhaoil) is a strait in north-west Scotland that separates the mainland from Lewis and Harris in the Outer Hebrides. It was known as Skotlandsfjörð ("Scotland's firth") in Old Norse.

The Minch's southern extension, which separates Skye from the middle islands of the Hebridean chain, is known as the Little Minch. It opens into the Sea of the Hebrides.

The Sea of the Hebrides (Scottish Gaelic: An Cuan Barrach, pronounced [ən̪ˠ ˈkʰuan ˈparˠəx]) is a small and partly sheltered section of the North Atlantic Ocean, indirectly off the southern part of the north-west coast of Scotland. To the east are the mainland of Scotland and the northern Inner Hebrides (including Skye and the Small Isles); to the west are the southern Outer Hebrides islands, principally South Uist, Eriskay, and Barra. To the north is the Little Minch, a channel connecting it with the Minch.

The Sea of the Hebrides forms part of the Inner Seas off the West Coast of Scotland, as defined by the International Hydrographic Organization, and part of the Seas west of Scotland as far as fisheries management is concerned.

Comhairle nan Eilean Siar (Scottish Gaelic for 'Council of the Western Isles'; Scottish Gaelic pronunciation: [ˈkʰõ.ərˠʎə nə ˈɲelan ˈʃiəɾ]) is the local authority for Na h-Eileanan an Iar (the Western Isles, also known as the Outer Hebrides), one of the 32 council areas of Scotland. It is based in Stornoway on the Isle of Lewis.

Barra Head, also known as Berneray (Scottish Gaelic: Beàrnaraigh), is the southernmost island of the Outer Hebrides in Scotland. Within the Outer Hebrides, it forms part of the Barra Isles archipelago. Originally, Barra Head only referred to the southernmost headland of Berneray but is now a common name for the entire island. The highest point of the island is Sotan, a Marilyn.

There are numerous prehistoric structures on the island and permanent occupation by 20–50 individuals occurred throughout the historic period, peaking in the 19th century. The economy of the residents was based on agriculture, fishing and fowling. The cliffs provide nesting sites for seabirds in such profusion that Berneray has been designated as a Special Protection Area.