| 218785 | Kaiy | tɛ | | | Clouse (1997) | |
| 6203 | Kaki Ae | nane | | | Brown (1973) | |
| 261063 | Kaki Ae | nani | | | Strong (1911) | |
| 195666 | Kalam | kobsal | | | Pawley (2013) | |
| 16728 | Kaluli | ke | | | Shaw (1986) | |
| 3286 | Kaluli | kaa | | | Franklin and Voorhoeve (1973) | |
| 35957 | Kamang | ap- | | | Stokhof (1975) | |
| 37012 | Kamang (Kolomane Dialect) | ap'i | | | Stokhof (1975) | |
| 38535 | Kamang (Langkuru Dialect) | ap'i | | | Stokhof (1975) | |
| 38301 | Kamang (Letley Dialect) | ʔap'i | | | Stokhof (1975) | |
| 38183 | Kamang (Pido 1 Dialect) | ap'i | | | Stokhof (1975) | |
| 37949 | Kamang (Pido 2 Dialect) | ʔ'api | | | Stokhof (1975) | |
| 72871 | Kamano | nóya' | | | Scott (1978) | |
| 1729 | Kamasa | boipu'ya | | | Lloyd (1973) | |
| 32310 | Kambaira | noseqi | | | SIL () | |
| 27359 | Kamula | amano | | | Reesink (1976) | |
| 16528 | Kamula | ʌmʌlɔ | | | Shaw (1986) | |
| 224971 | Kapriman | amaram | | | Dye et al (1968) | |
| 122106 | Kare | mʌrasa | | | Z'graggen (1980) | fish |
| 16428 | Kasua | tuřu | | | Shaw (1986) | |
| 2029 | Kasua | turu | | | Franklin and Voorhoeve (1973) | |
| 29399 | Kaure | bi | | | Voorhoeve (1971) | |
| 218790 | Kaure | biula | | | Clouse (1997) | |
| 17485 | Kawacha | mapwɨya | | | Lloyd (1973) | |
| 29215 | Kayagar | jakam | | | Voorhoeve (1971) | |
| 122109 | Kein | kuruk | | | Z'graggen (1980) | fish |
| 4334 | Keoru-Ahia (Aheave Dialect) | ekaka | | | Brown (1973) | |
| 4124 | Keoru-Ahia | ela'au | | | Brown (1973) | |
| 6853 | Kerewo | na: | | | Wurm (1973) | |
| 178298 | Kesawai | ainɛ | | | Z'graggen (1980) | fish |
| 33518 | Keuw | kíid-yô | fish sp. | | Kamholz (2012) | |
| 33519 | Keuw | kíid-yé | fish sp. | | Kamholz (2012) | |
| 6440 | Kibiri | koribi | | | Wurm (1973) | |
| 218779 | Kirikiri | ɸia | | | Clouse (1997) | |
| 218778 | Kirikiri (Faia Dialect) | hia | | | Clouse (1997) | |
| 77460 | Klon | ibiq | | | Baird (2008) | |
| 35124 | Klon (Halerman Dialect) | ɛɛb | | | Stokhof (1975) | |
| 35005 | Klon (Probur Dialect) | ɛb'ii | | | Stokhof (1975) | |
| 141299 | Kobol | ombor | | | Z'graggen (1980) | (fish) |
| 230655 | Kol | oŋare | | | SIL (1981) | |
| 148466 | Komba (Ândâ River Dialect) | iŋan | | | Southwell (1976) | fish |
| 148465 | Komba (Gwama River (North) Dialect) | iŋan | | | Southwell (1976) | fish |
| 148468 | Komba (Gwama River (South) Dialect) | iŋan | | | Southwell (1976) | fish |
| 148467 | Komba (Puleng River Dialect) | iŋan | | | Southwell (1976) | fish |
| 210782 | Komyandaret | ⁿdɔ'wɔ | | | Hughes (2009) | |
| 16628 | Konai | mĩye | | | Shaw (1986) | |
| 240490 | Kopar (Singarin Dialect) | ˈtʰamʊuntʰo | | | Abbott (1985) | |
| 245403 | Kopar (Singarin Dialect) | 'tʰamuntʰo | | | SIL (1977) | |
| 141285 | Korak | wa | | | Z'graggen (1980) | (fish) |
| 210576 | Korowai | ə̯'l̪i: | | | Hughes (2009) | |
