Scottish English is the set of varieties of the English language spoken in Scotland. The transregional, standardised variety is called Scottish Standard English or Standard Scottish English (SSE). Scottish Standard English may be defined as "the characteristic speech of the professional class [in Scotland] and the accepted norm in schools". IETF language tag for "Scottish Standard English" is en-scotland.

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.