ISO 639-1 in the context of "Northwest Caucasian languages"

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". Within the Northwest Caucasian languages, only Abkhaz has a first-set code in the ISO 639 standard.

This is a partial index of Wikipedia articles treating natural languages, arranged alphabetically and with families mentioned. The list also includes extinct languages.

For a published list of languages, see ISO 639-1 (list of ISO 639 language codes for 136 major languages), or for a more inclusive list, see ISO 639-3 (list of ISO 639-3 codes, 7,874 in total as of June 2013). The enumeration of languages and dialects can easily be taken into the five-digit range; the Linguasphere Observatory has a database (LS-2010) with more than 32,800 coded entries and more than 70,900 linguistic names.

A macrolanguage is a group of mutually intelligible speech varieties, or dialect continuum, that have no traditional name in common, and which may be considered distinct languages by their speakers. Macrolanguages are used as a book-keeping mechanism for the ISO 639 international standard of language codes. Macrolanguages are established to assist mapping between different sets of ISO language codes. Specifically, there may be a many-to-one correspondence between ISO 639-3, intended to identify all the thousands of languages of the world, and either of two other sets, ISO 639-1, established to identify languages in computer systems, and ISO 639-2, which encodes a few hundred languages for library cataloguing and bibliographic purposes. When such many-to-one ISO 639-2 codes are included in an ISO 639-3 context, they are called "macrolanguages" to distinguish them from the corresponding individual languages of ISO 639-3. According to the ISO,

ISO 639-3 is curated by SIL International; ISO 639-2 is curated by the Library of Congress (USA).

ISO 639 is a standardized nomenclature used to classify languages. Each language is assigned a two-letter (set 1) and three-letter lowercase abbreviation (sets 2–5). Part 1 of the standard, ISO 639-1, defines the two-letter codes, and Part 3 (2007), ISO 639-3, defines the three-letter codes, aiming to cover all known natural languages, largely superseding the ISO 639-2 three-letter code standard.

Kapampangan, Capampáñgan, or Pampangan, is an Austronesian language, and one of the eight major languages of the Philippines. It is the primary and predominant language of the entire province of Pampanga and southern Tarlac, on the southern part of Luzon's central plains geographic region, where the Kapampangan ethnic group resides. Kapampangan is also spoken in northeastern Bataan, as well as in the provinces of Bulacan, Nueva Ecija, and Zambales that border Pampanga. It is further spoken as a second language by a few Aeta groups in the southern part of Central Luzon. The language is known honorifically as Amánung Sísuan ('breastfed, or nurtured, language').

Kapampangan is assigned the ISO 639-2 three-letter code pam, but not an ISO 639-1 two-letter code.

Hiligaynon, also often referred to as Ilonggo or Binisayâ/Bisayâ nga Hiniligaynon/Inilonggo, is an Austronesian regional language spoken in the Philippines by about 9.1 million people, predominantly in Panay Island, Negros Occidental, and Soccsksargen, most of whom belong to the Hiligaynon people. It is the second-most widely spoken language in the Visayas and belongs to the Bisayan languages, and it is more distantly related to other Philippine languages.

It also has one of the largest native language-speaking populations of the Philippines, despite it not being taught and studied formally in schools and universities until 2012. Hiligaynon is given the ISO 639-2 three-letter code hil, but has no ISO 639-1 two-letter code.