Harris, Outer Hebrides in the context of St Kilda, Scotland

Clan MacLeod (/məˈklaʊd/ mə-KLOWD; Scottish Gaelic: Clann Mhic Leòid [ˈkʰl̪ˠãũn̪ˠ vĩçkʲ ˈʎɔːtʲ]) is a Highland Scottish clan associated with the Isle of Skye. There are two main branches of the clan: the MacLeods of Harris and Dunvegan, known in Gaelic as Sìol Tormoid ("seed of Tormod") and the Clan MacLeod of Lewis Assynt and Raasay, known in Gaelic as Sìol Torcaill ("seed of Torcall"). Both branches claim descent from Leòd, a Norse-Gael who lived in the 13th century.

Today, Clan MacLeod of The Lewes, Clan MacLeod of Raasay, and Clan MacLeod are represented by "Associated Clan MacLeod Societies", and the chiefs of the three clans. The association is made up of ten national societies across the world including: Australia, Canada, England, France, Germany, New Zealand, Scotland, South Africa, Switzerland, and the United States.

The Sound of Harris (Scottish Gaelic: Caolas na Hearadh) is a channel between the islands of Harris and North Uist in the Outer Hebrides of Scotland.

Clan MacLeod of The Lewes, commonly known as Clan MacLeod of Lewis (Scottish Gaelic: Clann Mhic Leòid Leòdhais), is a Highland Scottish clan, which at its height held extensive lands in the Western Isles and west coast of Scotland. From the 14th century up until the beginning of the 17th century there were two branches of Macleods: the MacLeods of Dunvegan and Harris (Clan MacLeod); and the Macleods of the Isle of Lewis. In Gaelic the Macleods of Lewis were known as Sìol Thorcaill ("Seed of Torquil"), and the MacLeods of Dunvegan and Harris were known as Sìol Thormoid ("Seed of Tormod").

The traditional progenitor of the MacLeods was Leod, made a son of Olaf the Black, King of Mann and the Isles, by a now-discredited tradition. An older, more accepted tradition names his father Olvir and describes the clan as Sliochd Olbhur. Tradition gave Leod two sons, Tormod - progenitor of the Macleods of Harris and Dunvegan (Sìol Thormoid); and Torquil - progenitor of the Macleods of Lewis (Sìol Thorcaill). In the 16th and early 17th centuries the chiefly line of the Clan Macleod of The Lewes was nearly extinguished by the bloodthirsty and power hungry chief "Old Rory" and his various offspring. This feuding directly led to the fall of the clan, and loss of its lands to the Clan Mackenzie. One line of the 16th century chiefly family, the Macleods of Raasay, survived and prospered on their lands for centuries thereafter. The current chief of Lewis descends from this latter family.

The Isle of Lewis (Scottish Gaelic: Eilean Leòdhais, pronounced [ˈelan ˈʎɔːəs̪] ) or simply Lewis is the northern part of Lewis and Harris, the largest island of the Western Isles or Outer Hebrides archipelago in Scotland. The two parts are frequently referred to as if they were separate islands. The total area of Lewis is 683 square miles (1,770 km).

Lewis is, in general, the lower-lying part of the island: the other part, Harris, is more mountainous. Due to its larger area and flatter, more fertile land, Lewis contains three-quarters of the population of the Western Isles, and the largest settlement, Stornoway. The island's diverse habitats are home to an assortment of flora and fauna, such as the golden eagle, red deer and seal, and are recognised in a number of conservation areas.