| 76182 | Lavukaleve | hamus | night | | Tryon & Hackman (1983) | |
| 22980 | Lau | lahaba | | | Voorhoeve (1975) | |
| 164848 | Kyenele (Miyak Dialect) | wukʰan | | | Davies and Comrie (1985) | night |
| 164841 | Kyenele (Kyaimbarang Dialect) | u𝒳wan | | | Davies and Comrie (1985) | night |
| 164842 | Kyaka | kukwa | | | Davies and Comrie (1985) | night |
| 22897 | Kwesten | kwin(tir) | | | Voorhoeve (1975) | |
| 22616 | Kwerba (Airmati Dialect) | kwin | | | Voorhoeve (1975) | |
| 22532 | Kwerba | ic | | | Voorhoeve (1975) | |
| 24947 | Kurudu | rorma | | | Voorhoeve (1975) | |
| 165974 | Kuot | arubu | also 'darkness' | | Lindström (2008) | |
| 28629 | Kuni-Boazi | loɤ̣a | | | Voorhoeve (1970) | |
| 21966 | Kuni-Boazi | deve | | | Voorhoeve (1975) | |
| 826 | Kuman | anduweři | | | Trefry (1969) | |
| 36488 | Kula | itin'an | | | Stokhof (1975) | |
| 260666 | Kui (Kiramang Dialect) | s'insamα | | | Stokhof (1975) | |
| 260705 | Kui (Kiramang Dialect) | s'insamα | | | Stokhof (1975) | |
| 260733 | Kui (Kiramang Dialect) | 'ɛr | | | Stokhof (1975) | |
| 260732 | Kui (Kiramang Dialect) | ab | | | Stokhof (1975) | |
| 260731 | Kui (Kiramang Dialect) | 'ɛr | | | Stokhof (1975) | |
| 260730 | Kui (Kiramang Dialect) | ab | | | Stokhof (1975) | |
| 36254 | Kui | αk'αn’ | | | Stokhof (1975) | |
| 5705 | Kubo | go̧si̧ | | | Shaw (1973) | |
| 7177 | Kubo | gōsī | | | Shaw (1986) | |
| 90765 | Kube | siŋi | night | | McElhanon (1967) | night |
| 145018 | Kowaki | tururapaha | | | Z'graggen (1980) | night |
| 33815 | Kosare | tomo | | | Heeschen (1978) | |
| 210623 | Korowai | ʔæl̪u'nɑ:n | | | Hughes (2009) | |
| 19926 | Korapun-Sela | imbẽl | | | Voorhoeve (1975) | |
| 145008 | Korak | inom | | | Z'graggen (1980) | night |
| 52597 | Korafe (Rabade Dialect) | 'tumba | night | | Smallhorn (2011) | |
| 52596 | Korafe (Mokorua Dialect) | 'tumba | night | | Smallhorn (2011) | |
| 240502 | Kopar (Singarin Dialect) | ˈřakʰaməntʰa | | | Abbott (1985) | |
| 245419 | Kopar (Singarin Dialect) | 'řakʰaməntʰa | | | SIL (1977) | |
| 21285 | Koneraw | yodomor | | | Voorhoeve (1975) | |
| 22246 | Konda | baburte | | | Voorhoeve (1975) | |
| 16610 | Konai | sa nɔgulu | | | Shaw (1986) | |
| 210825 | Komyandaret | ˈwɑɔhdəˈbɯ | | | Hughes (2009) | |
| 148935 | Komba (Puleng River Dialect) | ŋâtik | | | Southwell (1976) | night |
| 148843 | Komba (Gwama River (South) Dialect) | ŋâtik | | | Southwell (1976) | night |
| 148797 | Komba (Gwama River (North) Dialect) | ŋeŋ | | | Southwell (1976) | night |
| 148889 | Komba (Ândâ River Dialect) | ŋâtik | | | Southwell (1976) | night |
| 90759 | Komba | ŋatik | night | | McElhanon (1967) | night |
| 230674 | Kol | 'togo | | | SIL (1981) | |
| 22006 | Kokoda (Tarof Dialect) | parierea | | | Voorhoeve (1975) | |
| 22046 | Kokoda (Kasuweri Dialect) | patierea | | | Voorhoeve (1975) | |
| 14660 | Koitabu | vahi | night | | Dutton (2010) | |
| 164840 | Kobon | sɩmpʰ | | | Davies and Comrie (1985) | night |
| 196161 | Kobon | sɨbön | - | | Pawley (2013) | |
| 196160 | Kobon | s+b | - | | Pawley (2013) | |
| 145024 | Kobol | urinam | | | Z'graggen (1980) | night |
