- Abkhaz
An abkhazo-adyghian (caucasian) language. Spoken in Georgia (Abkhazia). A mother tongue for some 105 thousand people.
- Adyghe
An abkhazo-adyghian (caucasian) language. Spoken in Russia (Adyghea, Krasnodar region). A mother tongue for some 120 thousand people.
- Afrikaans
A germanic language. One of the official languages of Republic of South Africa. A mother tongue for some 6,5 million South African afrikaners (boers) – descendants of Netherlands colonists.
- Agul
A lezgian (dagestanian) language. Spoken in Russia (Dagestan, Stavropol region) and Azerbaijan. A mother tongue for some 15 thousand people.
- Albanian
An indo-european language forming its own group. Official language of Albania. A mother tongue for some 5 million people in Albania, Jugoslavia (Kosovo), Italy, Greece.
- Altai
A turkic language. Spoken in Russia (Altai). A mother tongue for some 55 thousand people.
- Armenian (Eastern, Western, Grabar)
An indo-european language forming its own group. Official language of Armenia, spoken also in Georgia, Azerbaijan, Russia. The old literary armenian - Grabar – is now used exclusively as the language of the clergy. The modern literary language has two main varieties – Eastern (Yerevan), spoken in Armenia and Western, spoken in Near East and Western Europe. A mother tongue for some 7 million people.
- Avar
An avar-andi-dido (dagestanian) language. Spoken in Russia (Dagestan) and Azerbaijan. A mother tongue for some 600 thousand people.
- Aymara
A quechumaran language (one of the languages of South America indians). One of the three official languages of Bolivia. A mother tongue for some 2,2 million aymara indians living in Peru and Bolivia. Most Aymara speakers speak also Quechua and Spanish. Some scientists prefer to treat Aymara not as a single language with some 10 dialects but as of Aymara language group.
- Azerbaijani (Cyrillic), Azerbaijani (Latin)
A turkic language. Official language of Azerbaijan. A mother tongue for some 14-20 million people in Iran, Azerbaijan, Armenia, Georgia.
- Bashkir
A turkic language. Spoken in Russia (Bashkiriya and nearby regions). A mother tongue for some 1 million people.
- Basic
(for Beginners All-purpose Symbolic Instruction Code), a programming language developed in the mid-1960s by John G. Kemeney and Thomas E. Kurz, professors at Dartmouth college, New Hampshire, USA.
- Basque
An isolate language. A mother tongue for some 600 thousand people in Spain and France.
- Belarusian
An east slavic language. Official language of Belarus. A mother tongue for some 10,2 million people.
- Bemba
A bantu language. A mother tongue for some 5 million people in Zambia, Zaire, Congo and Tanzania.
- Blackfoot
A west algonkian language. A mother tongue for less than 10 thousand indians in USA and Canada.
- Breton
A brythonic (celtic) language. A mother tongue for some 1 million bretons in France.
- Bugotu
An oceanic language (member of malayo-polynesian branch of austronesian languages) spoken in south east Solomon islands.
- Bulgarian
A south slavic language. Official language of Bulgaria. A mother tongue for some 9 million people.
- Buryat
A mongolian language. Spoken in Russia (Buryatia). A mother tongue for some 422 thousand people.
- C/C++
A programming language developed in 1972 by Dennis M. Ritchie, a system programmer at @ "AT&T Bell laboratories". The C++ language was introduced by Bjarne Stroustrup of the same "AT&T Bell laboratories" in the early 1980s. The name denotes the evolution from ?.
- Catalan
A romance language (ibero-romance subgroup). A mother tongue for some 8 million people in Spain (Catalonia, Valencia, Balearic islands), France (Roussillon, East Pyrenees), Andorra and Sardinia island. One of the official languages of the above-stated spanish provinces and Andorra.
- Cebuano
A philippinean (austronesian) language. Spoken in central Philippines. Usually considered to be a group of closely related languages (bisayan). A mother tongue for some 24 million people.
- Chamorro
An austronesian language spoken in western Micronesia, particularly on Guam island. A mother tongue for some 78 thousand people.
- Chechen
A nakh (caucasian) language. A mother tongue for some 1 million people in Russia (Chechnya, Ingushetia and Dagestan).
- Chukchee
A luorawetlan language spoken in Russia (Chukchee and Koryak regions). A mother tongue for some 10 thousand people.
- Chuvash
A turkic language spoken in Russia (Chuvashiya). A mother tongue for some 2 million people.
- COBOL
COBOL (for Common Business-Oriented Language), a programming language developed by computer manufacturers and U.S. Department of Defense in 1959.
- Corsican
Usually considered to be a dialect of Italian, spoken on Corsica island. A mother tongue for some 341 thousand people.
- Crimean Tatar
A turkic language spoken in Ukraine (Crimea). A mother tongue for some 700 thousand people.
- Croatian
A south slavic language. It was considered to be the single Serbo-Croatian language as Serbian was, the main difference being in the spelling system used - cyrillic for Serbian and latin for Croatian. Official language of Croatia. A mother tongue for some 5 million people.
- Crow
A siouan language spoken in Montana, USA. A mother tongue for less than 10 thousand people.
- Czech
A west slavic language. Official language of Czech Republic, spoken also in Slovakia. A mother tongue for some 12 million people.
- Dakota
A siouan language spoken in north USA (South Dakota, Montana). A mother tongue for some 20 thousand people.
- Danish
A gemanic (scandinavian) language. Official language of Denmark, spoken also in Greenland and Faroe islands. A mother tongue for some 5,5 million people.
- Dargwa
A dagestanian language. Spoken in Russia (Dagestan). A mother tongue for some 360 thousand people.
- Dungan
A sino-tibetan language spoken in Kyrgyzstan, Kazakhstan and Uzbekistan. A mother tongue for some 50 thousand people.
- Dutch (Netherlands and Belgium)
A germanic language. Official language of Netherlands and Belgium. A mother tongue for some 20 million people.
- English
A germanic language. The main international language. A UN language. The official language of USA, Canada, Great Britain, Ireland (officially second to
Irish), Australia, New Zealand, India (on a temporary status) and 15 african states: Republic of South Africa, Nigeria, Ghana, Uganda etc. A mother tongue for some 508 million people.
- Eskimo (Cyrillic), Eskimo (Latin)
An eskimo-aleut language. Spoken in south-east Chukchee peninsula (Russia), Alaska and nearby regions (USA), arctic regions of Canada, Greenland. A mother tongue for some 100 thousand people.
- Esperanto
The most popular artificial language introduced by L.L.Zamenhoff in 1887. Spoken in 83 countries worldwide by some 100000 people, some 30000 books had been published in Esperanto.
- Estonian
A finno-ugric (baltic-finnic) language. Official language of Estonia. A mother tongue for some 1,1 million people.
- Even
A manchu-tungus language spoken in Russia (Okhotsk, Yakutia, Magadan region). A mother tongue for some 5 thousand people.
- Evenki
A manchu-tungus language spoken in China, Russia (from Yenisey to Sakhalin), Mongolia. A mother tongue for some 30 thousand people (in Russia – some 10 thousand).
- Faroese
A germanic (scandinavian) language. Official language of Faroe islands (autonomous Danish possession), spoken also in some other regions of Denmark. A mother tongue for some 47 thousand people.
- Fijian
An austronesian language spoken on Fiji islands. A mother tongue for some 350 thousand people.
- Finnish
A finno-ugrig (baltic-finnic) language. Official language of Finland, spoken also in Russia (Karelia, St.Petersburg region), Sweden. A mother tongue for some 6 million people.
- Fortran
(for FORmula TRANslator), a programming language developed by IBM in mid-1950s.
- French
A romance language. A UN language. Official language of France, Belgium, Switzerland, Luxemburg, Monaco, Andorra, Canada, Haiti, several african states: Benin, Cote d'Ivoire, Burkina Faso, Gabon, Guinea, Zaire, Congo, Mali, Niger, Senegal, Togo, Tchad, Burundi, Rwanda, Central African Republic, Madagascar, Cameroon, Seychelles, Comoros, Jibuti, Vanuatu (Oceania). A mother tongue for more than 100 million people.
- Frisian
A germanic language spoken in Noord-Holland and Friesland (Netherlands), North Frisian islands, Helgoland island, Saterland (Germany). A mother tongue for some 730 thousand people.
- Friulian
A romance language. Usually considered to be a rhaeto-romanic language. Spoken in Friuli-Venezia Giulia (Italy). A mother tongue for some 700 thousand people.
- Gagauz
A turkic language spoken in Southern Moldavia. A mother tongue for some 180 thousand people.
- Galician
A romance language frequently referred to as a dialect of Spanish or Portuguese, spoken in Spain (Galicia). A mother tongue for some 4 million people.
- Ganda
A bantu language spoken in Uganda. A mother tongue for some 4 million people.
- German (Luxemburg)
One of the official languages of Luxemburg (also called Luxembourgian). Usually considered to be a Moselle-Franconian dialect of German.
- German (new and old spelling)
A germanic language. Official language of Germany, Austria, Switzerland, Luxemburg, Belgium. A mother tongue for some 128 million people.
- Greek
An indo-european language forming its own group. Official language of Greece and Cyprus. A mother tongue for some 12 million people.
- Guarani
A tupian language spoken in Paraguay and nearby regions in Brazil, Argentina and Bolivia. A mother tongue for some 5 million guarani indians.
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