盖尔国（苏格兰盖尔语：Gàidhealtachd，[kɛːəlˠ̪t̪əxk]， listen；有时也作A' Ghàidhealtachd）这一术语常用来指代苏格兰的高地和群岛地区，特别是指该地区的凯尔特文化。

相应的爱尔兰语词汇Gaeltacht则用来特指使用爱尔兰语的地区。

它也用来指代加拿大使用盖尔语的地区，包括新斯科舍省和安大略省的格伦加里县。

The Gàidhealtachd ([kɛːəl̪ˠt̪əxk]  listen , English: Gaeldom), sometimes known as A' Ghàidhealtachd (English: The Gaeldom), usually refers to the highlands and islands of Scotland, and especially the Gaelic culture of the area. The corresponding Irish word Gaeltacht refers strictly to an Irish-speaking area. The term is also used to apply to the Gaelic-speaking Canadian areas of Nova Scotia and Glengarry County, Ontario.