West Lothian is one of the 32 council areas of Scotland, and was one of its historic counties. The county was called Linlithgowshire until 1925. The historic county was bounded geographically by the Avon to the west and the Almond to the east. The modern council area occupies a larger area than the historic county. It was reshaped following local government reforms in 1975: some areas in the west were transferred to Falkirk; some areas in the east were transferred to Edinburgh; and some areas that had formerly been part of Midlothian were added to West Lothian.

Scottish Gaelic, also known as Scots Gaelic or simply Gaelic, is a Goidelic language native to the Gaels of Scotland. As a Goidelic language, Scottish Gaelic, as well as 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.