| Abbreviation | Definition |
|---|---|
| BAK | Bashkir |
| BAL | Baluchi |
| BAM | Bambara |
| BAN | Balinese |
| BAQ | Basque |
| BAS | Basa |
| BAT | Baltic (Other) |
| BAV | VENGO: A Language of Cameroon |
| BBJ | Ghomala: A Language of Cameroon |
| BEJ | Beja |
| BEL | Byelorussian |
| BEM | Bemba |
| BEN | Bengali |
| BER | Berber (Other) |
| BHO | Bhojpuri |
| BIH | Bihari |
| BIK | Bikol |
| BIN | Bini |
| BIS | Bislama |
| BKZ | BUNGKU (language) |