| Name | Other Name | Family | Nativ Name | ISO6391 Code | ISO6392T Code | ISO6392B Code | ISO6393 Code | Notes |
|---|---|---|---|---|---|---|---|---|
| Avaric | Northeast Caucasian | авар мацӀ; магӀарул мацӀ | av | ava | ava | ava | also known as Avar | |
| Avestan | Indo-European | avesta | ae | ave | ave | ave | ancient | |
| Aymara | Aymaran | aymar aru | ay | aym | aym | aym + 2 | macrolanguage | |
| Azerbaijani | Turkic | azərbaycan dili | az | aze | aze | aze + 2 | macrolanguage | |
| Bambara | Niger–Congo | bamanankan | bm | bam | bam | bam | ||
| Bashkir | Turkic | башҡорт теле | ba | bak | bak | bak | ||
| Basque | Language isolate | euskara; euskera | eu | eus | baq | eus | ||
| Belarusian | Indo-European | беларуская мова | be | bel | bel | bel | ||
| Bengali | Indo-European | বাংলা | bn | ben | ben | ben | also known as Bangla | |
| Bihari languages | Indo-European | भोजपुरी | bh | bih | bih | collective language code for Bhojpuri; Magahi; and Maithili |