| 165078 | Lembena | wenenge | | | Davies and Comrie (1985) | new |
| 76223 | Lavukaleve | koisove | new | | Tryon & Hackman (1983) | |
| 165073 | Kyenele (Kyaimbarang Dialect) | aɲigə | | | Davies and Comrie (1985) | new |
| 165074 | Kyaka | enenge | | | Davies and Comrie (1985) | new |
| 155604 | Kutong (Sakam Dialect) | kweǥʌi | | | McElhanon and Voorhoeve (1970) | new |
| 166078 | Kuot | nə | adj | | Lindström (2008) | |
| 155585 | Kuni-Boazi (Boazi Dialect) | qandi | | | McElhanon and Voorhoeve (1970) | new |
| 28628 | Kuni-Boazi | ndakinɑḳ | | | Voorhoeve (1970) | |
| 155632 | Kumukio | gbili | | | McElhanon and Voorhoeve (1970) | new |
| 825 | Kuman | erǐme | | | Trefry (1969) | |
| 36487 | Kula | tupw'αyα | | | Stokhof (1975) | |
| 260650 | Kui (Kiramang Dialect) | sib'ɛʔ | | | Stokhof (1975) | |
| 260651 | Kui (Kiramang Dialect) | biy'αkα | | | Stokhof (1975) | |
| 36253 | Kui | səb'aʔ | | | Stokhof (1975) | |
| 155575 | Kubo | doaw | | | McElhanon and Voorhoeve (1970) | new |
| 5736 | Kubo | dwau | | | Shaw (1973) | |
| 7208 | Kubo | dwau | | | Shaw (1986) | |
| 91129 | Kube | gberia | new | | McElhanon (1967) | new |
| 155637 | Kube | gbeli | | | McElhanon and Voorhoeve (1970) | new |
| 144472 | Kowaki | moni | | | Z'graggen (1980) | (new) |
| 210678 | Korowai | 'ɸe:βʔæ | | | Hughes (2009) | |
| 144463 | Korak | gutu | | | Z'graggen (1980) | (new) |
| 240513 | Kopar (Singarin Dialect) | ˈnənkʰümükʰ | | | Abbott (1985) | |
| 245431 | Kopar (Singarin Dialect) | 'ɛmbuampʰ 'nənkʰümükʰ | | | SIL (1977) | |
| 16641 | Konai | gehẽ | | | Shaw (1986) | |
| 210881 | Komyandaret | ɸæʔmɔˈneʔ | | | Hughes (2009) | |
| 148957 | Komba (Puleng River Dialect) | irakŋâ | | | Southwell (1976) | new |
| 148863 | Komba (Gwama River (South) Dialect) | âiŋâ | | | Southwell (1976) | new |
| 148817 | Komba (Gwama River (North) Dialect) | âiŋâ | | | Southwell (1976) | new |
| 148910 | Komba (Ândâ River Dialect) | uŋakŋâ | | | Southwell (1976) | new |
| 91123 | Komba | irakŋâ | new | | McElhanon (1967) | new |
| 155640 | Komba | irak | | | McElhanon and Voorhoeve (1970) | new |
| 230690 | Kol | pi'talpe | | | SIL (1981) | |
| 15458 | Koitabu | isage | new | | Dutton (2010) | |
| 165072 | Kobon | gɩ'sʌn | | | Davies and Comrie (1985) | new |
| 196159 | Kobon | kamɨŋ | + | | Pawley (2013) | |
| 196158 | Kobon | g+sön | + | | Pawley (2013) | |
| 144478 | Kobol | igom | | | Z'graggen (1980) | green, new |
| 144479 | Kobol | irigirauk | | | Z'graggen (1980) | new |
| 35066 | Klon (Probur Dialect) | hαb'α | | | Stokhof (1975) | |
| 35185 | Klon (Halerman Dialect) | hab'α | | | Stokhof (1975) | |
| 220352 | Kirikiri | kedi | | | Clouse (1997) | |
| 220505 | Kirikiri | kedi | | | Clouse (1997) | |
| 155631 | Kinalakna | poyo | | | McElhanon and Voorhoeve (1970) | new |
| 6453 | Kibiri | mapi oriora | | | Wurm (1973) | |
| 33568 | Ketengban | okoripwe | | | Heeschen (1978) | |
| 181526 | Kesawai | ʌmgo | | | Z'graggen (1980) | new |
| 6865 | Kerewo | olio moto | | | Wurm (1973) | |
| 4137 | Keoru-Ahia | eleke | | | Brown (1973) | |
| 4347 | Keoru-Ahia (Aheave Dialect) | ereke | | | Brown (1973) | |
