Northwest Caucasian languages

Northwest Caucasian
West Caucasian
Abkhazo–Circassian
Abkhaz–Adyghean
North Pontic
Pontic
Geographic
distribution
Ciscaucasia in Eastern Europe
Linguistic classificationOne of the world's primary language families
Proto-languageProto-Northwest Caucasian
Subdivisions
Language codes
Glottologabkh1242
  Circassian
  Abazgi
  Ubykh (extinct)

The Northwest Caucasian languages, also called West Caucasian, Abkhazo-Adyghean, Abkhazo-Circassian, Circassic, or sometimes Pontic languages (from Ancient Greek, pontos, referring to the Black Sea, in contrast to the Northeast Caucasian languages as the Caspian languages), is a family of languages spoken in the northwestern Caucasus region, chiefly in three Russian republics (Adygea, Kabardino-Balkaria, Karachay–Cherkessia), the disputed territory of Abkhazia, Georgia, and Turkey, with smaller communities scattered throughout the Middle East.

The group's relationship to any other language family is uncertain and unproven. One language, Ubykh, became extinct in 1992, while all of the other languages are in some form of endangerment, with UNESCO classifying all as either "vulnerable", "endangered", or "severely endangered".

The Northwest Caucasian languages possess highly complex sets of consonant distinctions paired with a lack of vowel distinctions, often providing archetypical cases of vertical vowel systems, also known as "linear" vowel systems.