The Nakh languages are a group of languages within the Northeast Caucasian family, spoken chiefly by the Chechens and Ingush in the North Caucasus.

Bats is the endangered language of the Bats people, an ethnic minority in Georgia. The Chechen, Ingush and Bats peoples are also grouped under the ethno-linguistic umbrella of Nakh peoples.

The Nakh languages were historically classified as an independent North-Central Caucasian family, but are now recognized as a branch of the Northeast Caucasian family.

The separation of Nakh from common Northeast Caucasian has been tentatively dated to the Neolithic (ca. 4th millennium BC).

The Nakh languages are relevant to the glottalic theory of Indo-European, because the Vainakh branch has undergone the voicing of ejectives that has been postulated but widely derided as improbable in that family. In initial position, Bats ejectives correspond to Vainakh ejectives, but in non-initial position to Vainakh voiced consonants. (The exception is *qʼ, which remains an ejective in Vainakh.)

A similar change has taken place in some of the other Dagestanian languages.

A change from ejectives to implosives is also reconstructed in the East Cushitic languages, specifically in Somaloid.

Many obscure ancient languages or peoples have been postulated by scholars of the Caucasus as Nakh, many in the South Caucasus. None of these have been confirmed; most are classified as Nakh on the basis of placenames.^{[citation needed]}