게일어군(영어: Gaelic languages) 또는 고이델어군(영어: Goidelic languages)은 도서켈트어군에 속한 언어들로 여기에 속한 대표적인 언어가 아일랜드어이다.
![Thumb](http://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Scots_lang-en.svg/640px-Scots_lang-en.svg.png)
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