Gaeltacht (/ - /, GAYL-tək(h)t, Irish: [ˈɡeːl̪ˠt̪ˠəxt̪ˠ], pl. Gaeltachtaí) is an Irish term referring individually to any, or collectively to all, of the districts where the government recognises that the Irish language is the predominant vernacular, or language of the home.
The Gaeltacht districts were first officially recognised during the 1920s in the early years of the Irish Free State, following the Gaelic Revival, as part of a government policy aimed at restoring the Irish language.
It is now recognised that the Gaeltacht is threatened by serious language decline. Research published in 2015 showed that of the 155 electoral divisions in the Gaeltacht, only 21 are communities where Irish is spoken on a daily basis by two-thirds or more of the population. Two-thirds is regarded by some academics as a tipping point for language survival.