| Abbreviation | Definition |
|---|---|
| JRB | Judeo-Arabic |
| JSN | Jai Swaminarayan |
| JUK | WAPAN: A language of Nigeria |
| JUW | WASE: a language of Nigeria |
| KAA | Kara- Kalpak |
| KAB | KABARDIAN: A language of European Russia |
| KAB | Kabyle |
| KAC | Kachin |
| KAG | Kagoro: a language of Mali |
| KAL | Greenlandic |
| KAM | Kamba |
| KAN | Kannada |
| KAR | Karen |
| KAS | Kashmiri |
| KAT | Georgian |
| KAU | Kanuri |
| KAW | Kawi |
| KAZ | Kazakh |
| KCJ | Korean Chinese And Japanese |
| KCK | Kalanga |