| 21416 | Kamberau | ora | | | Voorhoeve (1975) | |
| 21376 | Kamoro | ote | | | Voorhoeve (1975) | |
| 16520 | Kamula | tʌli | | | Shaw (1986) | |
| 27350 | Kamula | dali | | | Reesink (1976) | |
| 237134 | Kanggape | ɣək | | | Foley (2005) | |
| 21062 | Kanum | per | | | Voorhoeve (1975) | |
| 19572 | Kapauri | tretaro | | | Voorhoeve (1975) | |
| 224805 | Kapriman | mə | | | Dye et al (1968) | |
| 21777 | Karas | ror | | | Voorhoeve (1975) | |
| 244179 | Karawa | tau | | | Laycock (1968) | |
| 123138 | Kare | kaima | | | Z'graggen (1980) | tree |
| 34483 | Karon Dori | ara | | | Miedema & Welling (1985) | |
| 23621 | Karon Dori | ara | | | Voorhoeve (1975) | |
| 16420 | Kasua | i | | | Shaw (1986) | |
| 2021 | Kasua | tai | | | Franklin and Voorhoeve (1973) | |
| 91366 | Kâte | yâc | tree | | McElhanon (1967) | tree |
| 29446 | Kaure | te | | | Voorhoeve (1971) | |
| 217308 | Kaure | tei | | | Clouse (1997) | |
| 19457 | Kaure | te | | | Voorhoeve (1975) | |
| 19450 | Kaure | teija | | | Voorhoeve (1975) | |
| 22585 | Kauwera | ic | | | Voorhoeve (1975) | |
| 17477 | Kawacha | iga | | | Lloyd (1973) | |
| 20621 | Kayagar | wom | | | Voorhoeve (1975) | |
| 29260 | Kayagar | wom | | | Voorhoeve (1971) | |
| 236819 | Kayan | paraŋ | | | Foley (2005) | |
| 123141 | Kein | a: | | | Z'graggen (1980) | tree |
| 21857 | Kemberano | kamine | | | Voorhoeve (1975) | |
| 25926 | Kemtuik | di | | | Voorhoeve (1975) | |
| 4326 | Keoru-Ahia (Aheave Dialect) | kora | | | Brown (1973) | |
| 4116 | Keoru-Ahia | kora | | | Brown (1973) | |
| 6845 | Kerewo | nuʔa | | | Wurm (1973) | |
| 179250 | Kesawai | tr̃i | | | Z'graggen (1980) | tree |
| 33596 | Ketengban | co | | | Heeschen (1978) | |
| 33407 | Keuw | kúd-yô | | | Kamholz (2012) | |
| 6432 | Kibiri | kubi | | | Wurm (1973) | |
| 157178 | Kimaghima | do | | | McElhanon and Voorhoeve (1970) | tree |
| 19772 | Kimaghima | do | | | Voorhoeve (1975) | |
| 237136 | Kire | kʰa | | | Foley (2005) | |
| 217297 | Kirikiri | du | | | Clouse (1997) | |
| 35128 | Klon (Halerman Dialect) | att'ey | | | Stokhof (1975) | |
| 35009 | Klon (Probur Dialect) | ətt'ey | | | Stokhof (1975) | |
| 142227 | Kobol | neim | | | Z'graggen (1980) | tree |
| 163806 | Kobon | mampʰ | | | Davies and Comrie (1985) | tree |
| 196286 | Kobon | mab ñöl | + | | Pawley (2013) | |
| 14997 | Koitabu | idi | tree, stick, pole | | Dutton (2010) | |
| 22057 | Kokoda (Kasuweri Dialect) | kemini | | | Voorhoeve (1975) | |
| 22017 | Kokoda (Tarof Dialect) | kemino | | | Voorhoeve (1975) | |
| 229614 | Kol | ti̠nɛl | | | SIL (1962) | |
| 230612 | Kol | 'ti:nel | | | SIL (1981) | |
| 91361 | Komba | nak | tree | | McElhanon (1967) | tree |
