Lewis and Harris
largest island in Scotland, part of the Outer Hebrides

Lewis and Harris, or Lewis with Harris, is the largest island in Scotland. It is the main island of the Outer Hebrides, around 24 miles (39 km) from the Scottish mainland.
The island has an area of 841 square miles (2,178 km2), which is approximately 1% the size of Great Britain). It is not only the largest island in Scotland but also the third largest in the British Isles, after Great Britain and Ireland.
Despite its name, Lewis and Harris is a single island divided by mountains. The northern two-thirds is called Lewis and the southern third Harris; each is referred to as if it were a separate island and there are many cultural and linguistic differences between the two.
Name
The island does not have a one-word name in either English or Scottish Gaelic, and is referred to as "Lewis and Harris", "Harris and Lewis", "Lewis with Harris", "Harris with Lewis" etc. Rarely used is the collective name of "the Long Island" (Scottish Gaelic: an t-Eilean Fada), although that epithet is sometimes applied to the entire archipelago of the Outer Hebrides, including the Uist group of islands and Barra.
Geography
Lewis–Harris boundary
The boundary between Lewis and Harris runs for about six miles (ten kilometres), where the island narrows between Loch Resort (Loch Reasort, opposite Scarp) on the west and Loch Seaforth (Loch Shìophoirt) on the east This is north of the more obvious isthmus at Tarbert, which looks as though it should separate North Harris from South Harris but the North Harris Estate extends much further south. Until 1975, Lewis belonged to the county of Ross and Cromarty and Harris to Inverness-shire.
The public source identifies “Lewis and Harris” as largest island in Scotland, part of the Outer Hebrides. This brief keeps that definition visible, then builds a research path around Lewis, Harris and largest.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Lewis and Harris”, the useful work is to connect “largest island in Scotland, part of the Outer Hebrides” to the records capable of establishing context and consequence.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Aug 9, 2026. The linked authority identifier is Q363778. VIAF identifies the subject as 236999897. The Library of Congress control number is sh86004268. Authority coordinates are 58.250, -6.667. 3 of 3 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1975.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Lewis and Harris”, its source revision and the description used here.
- Expand the search: follow Lewis and Harris primary sources, Lewis and Harris archive and Lewis research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Lewis and Harris”?
- What physical evidence or contemporary plan supports the description?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Lewis and Harris” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.