| 158218 | Kube | horua | | | McElhanon and Voorhoeve (1970) | long |
| 144359 | Kowaki | seʔat | | | Z'graggen (1980) | long |
| 33798 | Kosare | djubõ | long (way) | | Heeschen (1978) | |
| 210691 | Korowai | kɔb'dɑ | | | Hughes (2009) | |
| 210690 | Korowai | dɑ:l̪ | | | Hughes (2009) | |
| 144350 | Korak | kulel | | | Z'graggen (1980) | long |
| 245424 | Kopar (Singarin Dialect) | 'ŋkʰoŋkʰopʰaři | | | SIL (1977) | |
| 240507 | Kopar (Singarin Dialect) | ˈŋkʰoŋkʰopʰaři | | | Abbott (1985) | |
| 16632 | Konai | sɔgɔ | | | Shaw (1986) | |
| 210894 | Komyandaret | sɨˈjɜkɨjɑ | | | Hughes (2009) | |
| 148751 | Komba (Puleng River Dialect) | kârep | | | Southwell (1976) | long |
| 148752 | Komba (Gwama River (South) Dialect) | kârep | | | Southwell (1976) | long |
| 148749 | Komba (Gwama River (North) Dialect) | kârep | | | Southwell (1976) | long |
| 148750 | Komba (Ândâ River Dialect) | kârep | | | Southwell (1976) | long |
| 90773 | Komba | kârep | long | | McElhanon (1967) | long |
| 158221 | Komba | kʌrɛp | | | McElhanon and Voorhoeve (1970) | long |
| 230683 | Kol | pi'a: | | | SIL (1981) | |
| 14855 | Koitabu | ege | long | | Dutton (2010) | |
| 196134 | Kobon | m+lö | - | | Pawley (2013) | |
| 164958 | Kobon | mɨ'lʌ | | | Davies and Comrie (1985) | long |
| 144365 | Kobol | urigog | | | Z'graggen (1980) | long |
| 35062 | Klon (Probur Dialect) | laŋ | | | Stokhof (1975) | |
| 35181 | Klon (Halerman Dialect) | lααŋ | | | Stokhof (1975) | |
| 77518 | Klon | lang | | | Baird (2008) | |
| 77517 | Klon | odol | | | Baird (2008) | |
| 218986 | Kirikiri (Faia Dialect) | uɾe-βe | | | Clouse (1997) | |
| 218987 | Kirikiri | uɾe-we | | | Clouse (1997) | |
| 158212 | Kinalakna | korep | | | McElhanon and Voorhoeve (1970) | long |
| 6444 | Kibiri | teteri | | | Wurm (1973) | |
| 33644 | Ketengban | pera | long way | | Heeschen (1978) | |
| 181412 | Kesawai | orohoi | | | Z'graggen (1980) | long |
| 6857 | Kerewo | tutu | | | Wurm (1973) | |
| 4128 | Keoru-Ahia | heie'i | | | Brown (1973) | |
| 4338 | Keoru-Ahia (Aheave Dialect) | hepi | | | Brown (1973) | |
| 125521 | Kein | huyaw | | | Z'graggen (1980) | long |
| 29228 | Kayagar | woro | | | Voorhoeve (1971) | |
| 17489 | Kawacha | laaviya | | | Lloyd (1973) | |
| 29411 | Kaure | hewa | | | Voorhoeve (1971) | |
| 218998 | Kaure | hewa | | | Clouse (1997) | |
| 158227 | Kâte (Wemo Dialect) | dzori | | | McElhanon and Voorhoeve (1970) | long |
| 158226 | Kâte (Wâmora Dialect) | dzori | | | McElhanon and Voorhoeve (1970) | long |
| 158225 | Kâte (Mâgobineng Dialect) | dzori | | | McElhanon and Voorhoeve (1970) | long |
| 90778 | Kâte | dzoricne | long | | McElhanon (1967) | long |
| 16432 | Kasua | senʌtɔľɔ | | | Shaw (1986) | |
| 2033 | Kasua | senapo | | | Franklin and Voorhoeve (1973) | |
| 125518 | Kare | duwuŋgu | | | Z'graggen (1980) | long |
| 225038 | Kapriman | xagər | | | Dye et al (1968) | |
| 16532 | Kamula | seřemʌľeni | | | Shaw (1986) | |
| 27363 | Kamula | səmanina | | | Reesink (1976) | |
| 158145 | Kamoro | maiku | | | McElhanon and Voorhoeve (1970) | long |
