| 164062 | Kyaka | mendaki | | | Davies and Comrie (1985) | one |
| 237592 | Kwoma | pochi | | | Foley (2005) | |
| 22898 | Kwesten | afaten | | | Voorhoeve (1975) | |
| 23102 | Kwerisa | kegei | | | Voorhoeve (1975) | |
| 22617 | Kwerba (Airmati Dialect) | aberjas | | | Voorhoeve (1975) | |
| 22533 | Kwerba | abaic | | | Voorhoeve (1975) | |
| 24948 | Kurudu | bo-sandi | | | Voorhoeve (1975) | |
| 166001 | Kuot | namurit | | | Lindström (2008) | |
| 28634 | Kuni-Boazi | kɔpɔ | | | Voorhoeve (1970) | |
| 21967 | Kuni-Boazi | koapo | | | Voorhoeve (1975) | |
| 829 | Kuman | suařa | | | Trefry (1969) | |
| 36448 | Kula | s'ɔnnα | | | Stokhof (1975) | |
| 37736 | Kui (Kiramang Dialect) | n'uku | | | Stokhof (1975) | |
| 36214 | Kui | n'uku | | | Stokhof (1975) | |
| 5761 | Kubo | tano | | | Shaw (1973) | |
| 7233 | Kubo | tanɔ | | | Shaw (1986) | |
| 90555 | Kube | momakgu | one | | McElhanon (1967) | one |
| 25480 | Kowiai | samosi | | | Voorhoeve (1975) | |
| 143882 | Kowaki | atatɛ | | | Z'graggen (1980) | (one) |
| 33818 | Kosare | kora'ɸɛ | | | Heeschen (1978) | |
| 210664 | Korowai | ʔəli:zɔ:p | | | Hughes (2009) | |
| 19927 | Korapun-Sela | thoxunok | | | Voorhoeve (1975) | |
| 143872 | Korak | itamanuŋo | | | Z'graggen (1980) | (one) |
| 235324 | Kopar | mbatep | | | Foley (2005) | |
| 235994 | Kopar | mbatep | | | Foley (2005) | |
| 245376 | Kopar (Singarin Dialect) | 'batʰɛpʰ | | | SIL (1977) | |
| 240469 | Kopar (Singarin Dialect) | ˈbatʰɛpʰ | | | Abbott (1985) | |
| 21286 | Koneraw | tenamotere | | | Voorhoeve (1975) | |
| 22247 | Konda | mutyu | | | Voorhoeve (1975) | |
| 16666 | Konai | tano | | | Shaw (1986) | |
| 210868 | Komyandaret | ˈɸædiʔ | | | Hughes (2009) | |
| 148931 | Komba (Puleng River Dialect) | kânok | | | Southwell (1976) | one |
| 148839 | Komba (Gwama River (South) Dialect) | konok | | | Southwell (1976) | one |
| 148793 | Komba (Gwama River (North) Dialect) | konok | | | Southwell (1976) | one |
| 148885 | Komba (Ândâ River Dialect) | kânok | | | Southwell (1976) | one |
| 90549 | Komba | kânok | one | | McElhanon (1967) | one |
| 231998 | Kol | 'pusuɒ | | | SIL (1981) | |
| 229631 | Kol | titus | | | SIL (1962) | |
| 22007 | Kokoda (Tarof Dialect) | onatia | | | Voorhoeve (1975) | |
| 22047 | Kokoda (Kasuweri Dialect) | onati | | | Voorhoeve (1975) | |
| 196170 | Kobon | añɩ | - | | Pawley (2013) | |
| 196171 | Kobon | ap | - | | Pawley (2013) | |
| 164060 | Kobon | 'wanɩŋkənəmbʌ | | | Davies and Comrie (1985) | one |
| 196173 | Kobon | rɨmnap | - | | Pawley (2013) | |
| 196172 | Kobon | apen | - | | Pawley (2013) | |
| 143887 | Kobol | utʌm(p) | | | Z'graggen (1980) | (one) |
| 35027 | Klon (Probur Dialect) | nuk | | | Stokhof (1975) | |
| 35146 | Klon (Halerman Dialect) | nuk | | | Stokhof (1975) | |
| 77563 | Klon | nuk | | | Baird (2008) | |
| 214619 | Kirikiri (Faia Dialect) | kode | | | Clouse (1997) | |
