Languages:
| Isocode | Glottocode | Language | Classification | Count |
|---|---|---|---|---|
| tbd | Kaki Ae | T, E, Tate | 48 | |
| xla | Kamula | T, Kamula | 48 | |
| kiw | Kiwai, Northeast | T, Kiwaian | 48 | |
| kjd | Kiwai, Southern | T, Kiwaian | 48 | |
| kig | Kimaghima | T, Kolopom | 88 | |
| kpw | Kobon | T, M, Kalam-Kobon | 350 | |
| tyn | Kombai | T, O, A, Dumut | 76 | |
| khe | Korowai | T, O, A, Korowai | 282 | |
| xod | Kokoda | T, S, S, Central | 48 | |
| kup | Kunimaipa | T, S, G, Kunimaipa | 48 | |
| kqi | Koitabu | T, S, K, Koiaric | 48 | |
| xaw | Kawaiisu | U, N, N, Southern | 48 | |
| kkk | Kokota | Western Oceanic. | 48 | |
| Komnzo | Yam Family; Tonda Branch | 76 | ||
| ket | Ket | Yeniseian | 48 |