The Goidelic languages or Gaelic languages (Scottish Gaelic: cànanan Goidhealach, Irish: teangacha Gaelacha, Manx: çhengaghyn Gaelgagh) are one of the two branches of the Insular Celtic languages, the other consisting of the Brythonic languages. Goidelic languages historically formed a dialect continuum stretching from the south of Ireland through the Isle of Man to the north of Scotland. There are three modern Goidelic languages: Irish (Gaeilge), Scottish Gaelic (Gàidhlig) and Manx (Gaelg).
The Goidelic languages are part of the Q-Celtic branch of the Celtic languages.
Although Irish and Manx are often referred to as Irish Gaelic and Manx Gaelic (as they are Goidelic or Gaelic languages), the use of the word Gaelic is unnecessary because the terms Irish and Manx, when referring to language, only ever refer to these languages, whereas Scots has come to refer to a Germanic language, and therefore "Scottish" can refer to things not at all Gaelic. The word Gaelic by itself is sometimes used to refer to Scottish Gaelic and is thus ambiguous.