| 4299 | Keoru-Ahia (Aheave Dialect) | ape | | | Brown (1973) | |
| 4089 | Keoru-Ahia | ape | | | Brown (1973) | |
| 6818 | Kerewo | puluʔo | | | Wurm (1973) | |
| 176686 | Kesawai | tama | | | Z'graggen (1980) | mouth |
| 33301 | Keuw | bíisì-pô | | | Kamholz (2012) | |
| 6405 | Kibiri | ara wui | | | Wurm (1973) | |
| 155530 | Kinalakna | aŋo | | | McElhanon and Voorhoeve (1970) | mouth |
| 212745 | Kirikiri | boɾakwaɾi | | | Clouse (1997) | |
| 212744 | Kirikiri (Faia Dialect) | uɸəɾi | | | Clouse (1997) | |
| 77645 | Klon | ad | | | Baird (2008) | |
| 35096 | Klon (Halerman Dialect) | nad. | | | Stokhof (1975) | |
| 34977 | Klon (Probur Dialect) | nad. | | | Stokhof (1975) | |
| 139711 | Kobol | papɛ | | | Z'graggen (1980) | (mouth) |
| 196148 | Kobon | maj mgan | + | | Pawley (2013) | |
| 196147 | Kobon | meg mgan | + | | Pawley (2013) | |
| 163060 | Kobon | ˌmanʥ̮əməŋ'gan | | | Davies and Comrie (1985) | mouth |
| 230136 | Kol | 'koru | | | SIL (1981) | |
| 229587 | Kol | koru lanɛnwa | | | SIL (1962) | |
| 155538 | Komba | lau | | | McElhanon and Voorhoeve (1970) | mouth |
| 148650 | Komba (Ândâ River Dialect) | lâuŋâ | mouth (his) | | Southwell (1976) | mouth (his) |
| 148649 | Komba (Gwama River (North) Dialect) | lâuŋâ | mouth (his) | | Southwell (1976) | mouth (his) |
| 148652 | Komba (Gwama River (South) Dialect) | lâuŋâ | mouth (his) | | Southwell (1976) | mouth (his) |
| 148651 | Komba (Puleng River Dialect) | lâuŋâ | mouth (his) | | Southwell (1976) | mouth (his) |
| 201605 | Kombai | mogoro | | | Voorhoeve (2000) | |
| 210746 | Komyandaret | bɔŋgɔ'lɔ | | | Hughes (2009) | |
| 16593 | Konai | mɔgau | | | Shaw (1986) | |
| 28239 | Korafe | beka | | | Wilson (1969) | |
| 155554 | Korafe | beka | | | McElhanon and Voorhoeve (1970) | mouth |
| 52354 | Korafe (Mokorua Dialect) | be[xa] | mouth | | Smallhorn (2011) | |
| 52353 | Korafe (Mokorua Dialect) | be[ka] | mouth | | Smallhorn (2011) | |
| 52355 | Korafe (Rabade Dialect) | be[ka] | mouth | | Smallhorn (2011) | |
| 139697 | Korak | -kotaŋ | | | Z'graggen (1980) | (mouth) |
| 210540 | Korowai | bɔ:l'ʔɑ:t | | | Hughes (2009) | |
| 139706 | Kowaki | hopar | | | Z'graggen (1980) | (mouth) |
| 155536 | Kube | koa | | | McElhanon and Voorhoeve (1970) | mouth |
| 5688 | Kubo | mogau | | | Shaw (1973) | |
| 155470 | Kubo | moga | | | McElhanon and Voorhoeve (1970) | mouth |
| 7160 | Kubo | mɔgaʔu | | | Shaw (1986) | |
| 36164 | Kui | naw'α | | | Stokhof (1975) | |
| 37686 | Kui (Kiramang Dialect) | nαw'α | | | Stokhof (1975) | |
| 36398 | Kula | ndž'agɩ | | | Stokhof (1975) | |
| 822 | Kuman | diřano | | | Trefry (1969) | |
| 32555 | Kuman | dira-ne | | | Salisbury (1956) | |
| 155531 | Kumukio | gbi | | | McElhanon and Voorhoeve (1970) | mouth |
| 28618 | Kuni-Boazi | mɑŋgɑŋga | | | Voorhoeve (1970) | |
| 155485 | Kuni-Boazi (Boazi Dialect) | maŋkaŋka | | | McElhanon and Voorhoeve (1970) | mouth |
| 165872 | Kuot | nənəm | | | Lindström (2008) | |
| 155503 | Kutong (Sakam Dialect) | gi | | | McElhanon and Voorhoeve (1970) | mouth |
| 163062 | Kyaka | kata | | | Davies and Comrie (1985) | mouth |
| 163061 | Kyenele (Kyaimbarang Dialect) | 'ᵐbaraŋ | | | Davies and Comrie (1985) | mouth |
