| 6891 | Kerewo | neʔewa | | | Wurm (1973) | |
| 180941 | Kesawai | aere | | | Z'graggen (1980) | two |
| 33597 | Ketengban | bitini | | | Heeschen (1978) | |
| 33409 | Keuw | páid-yô | | | Kamholz (2012) | |
| 6479 | Kibiri | buakei | | | Wurm (1973) | |
| 19773 | Kimaghima | kave | | | Voorhoeve (1975) | |
| 237015 | Kire | pʰunini | | | Foley (2005) | |
| 214646 | Kirikiri | ɔɾo-we | | | Clouse (1997) | |
| 214645 | Kirikiri (Faia Dialect) | ɔɾo-we | | | Clouse (1997) | |
| 77546 | Klon | orok | | | Baird (2008) | |
| 77549 | Klon | rok | | | Baird (2008) | |
| 35147 | Klon (Halerman Dialect) | ər'ak | | | Stokhof (1975) | |
| 35028 | Klon (Probur Dialect) | ər'u | | | Stokhof (1975) | |
| 143915 | Kobol | ambur | | | Z'graggen (1980) | (two) |
| 196290 | Kobon | m+höp | - | | Pawley (2013) | |
| 196289 | Kobon | mɨhay | - | | Pawley (2013) | |
| 164084 | Kobon | mə'hʌϕ | | | Davies and Comrie (1985) | two |
| 15380 | Koitabu | ab | two | | Dutton (2010) | |
| 22058 | Kokoda (Kasuweri Dialect) | ogia | | | Voorhoeve (1975) | |
| 22018 | Kokoda (Tarof Dialect) | oja | | | Voorhoeve (1975) | |
| 230622 | Kol | te'tepe | | | SIL (1981) | |
| 229632 | Kol | tɛřɛŋ | | | SIL (1962) | |
| 90563 | Komba | zâhât | two | | McElhanon (1967) | two |
| 148374 | Komba (Ândâ River Dialect) | zagât | | | Southwell (1976) | two |
| 148373 | Komba (Gwama River (North) Dialect) | zagât | | | Southwell (1976) | two |
| 148376 | Komba (Gwama River (South) Dialect) | zagât | | | Southwell (1976) | two |
| 148375 | Komba (Puleng River Dialect) | zagât | | | Southwell (1976) | two |
| 210869 | Komyandaret | mɔːmɨˈnɛ | | | Hughes (2009) | |
| 16667 | Konai | bʌnɔu | | | Shaw (1986) | |
| 22258 | Konda | rak | | | Voorhoeve (1975) | |
| 21297 | Koneraw | kuinam | | | Voorhoeve (1975) | |
| 245377 | Kopar (Singarin Dialect) | 'kʰompaři | | | SIL (1977) | |
| 240470 | Kopar (Singarin Dialect) | ˈkʰompaři | | | Abbott (1985) | |
| 236001 | Kopar | kombari | | | Foley (2005) | |
| 7680 | Kopar | kompari | | | Foley (1986) | |
| 235331 | Kopar | kombari | | | Foley (2005) | |
| 143900 | Korak | itiɛl | | | Z'graggen (1980) | (two) |
| 19938 | Korapun-Sela | bisini | | | Voorhoeve (1975) | |
| 210665 | Korowai | jæʔme:ɾ̥ | | | Hughes (2009) | |
| 33841 | Kosare | tau | | | Heeschen (1978) | |
| 143909 | Kowaki | irɛᵬ | | | Z'graggen (1980) | (two) |
| 25484 | Kowiai | ruwet | | | Voorhoeve (1975) | |
| 90569 | Kube | rehek | two | | McElhanon (1967) | two |
| 5762 | Kubo | beya̧u̧ | | | Shaw (1973) | |
| 7234 | Kubo | beaũ | | | Shaw (1986) | |
| 36215 | Kui | αr'uku | | | Stokhof (1975) | |
| 37737 | Kui (Kiramang Dialect) | αy'uku | | | Stokhof (1975) | |
| 36449 | Kula | y'akku | | | Stokhof (1975) | |
| 745 | Kuman | suo | | | Trefry (1969) | |
| 21978 | Kuni-Boazi | menes | | | Voorhoeve (1975) | |
