Languages:
| Isocode | Glottocode | Language | Classification | Count |
|---|---|---|---|---|
| kgp | Kaingang | J, S, Kaingang | 48 | |
| kfz | Koromfe | N, A, V, N, G, C, N, Kurumfe | 48 | |
| kff | Koya | D, S, G, K, M, Kui-Kuvi | 48 | |
| ket | Ket | Yeniseian | 48 | |
| kan | Kannada | D, S, T, Kannada | 84 | |
| gyd | Kayardild | A, Tangkic | 78 | |
| gww | Kwini | A, Worrorran | 76 | |
| gvn | Kuku Yalanji | A, P, N, Pama-Maric | 76 | |
| gvc | Kotiria | 48 | ||
| dmo | Kemedzung | N, A, V, B, B, S, Beboid | 48 | |
| dju | Kapriman | S, S, Bahinemo | 48 | |
| cwt | Kuwaataay (Diembering Dialect) | N, A, A, N, B, J, J, Kwatay | 44 | |
| cou | Konyagi | N, A, A, N, E, Tenda | 44 | |
| cku | Koasati | M, E, C, A, Alabama-Koasati | 48 | |
| cbv | Kakua | 48 |