| Name | Other Name | Family | Nativ Name | ISO6391 Code | ISO6392T Code | ISO6392B Code | ISO6393 Code | Notes |
|---|---|---|---|---|---|---|---|---|
| Faroese | Indo-European | føroyskt | fo | fao | fao | fao | ||
| 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 | ||
| Bislama | Creole | Bislama | bi | bis | bis | bis | Language formed from English and Ni-Vanuatu; with some French influence. | |
| Bosnian | Indo-European | bosanski jezik | bs | bos | bos | bos | ||
| Breton | Indo-European | brezhoneg | br | bre | bre | bre |