| 1726 | Kamasa | manɨwa | | | Lloyd (1973) | |
| 32296 | Kambaira | numi | | | SIL () | |
| 21384 | Kamberau | gedə | | | Voorhoeve (1975) | |
| 21344 | Kamoro | paturu | | | Voorhoeve (1975) | |
| 16525 | Kamula | tea | | | Shaw (1986) | |
| 27355 | Kamula | tea | | | Reesink (1976) | |
| 237125 | Kanggape | ŋgwarak | | | Foley (2005) | |
| 21030 | Kanum | sento | | | Voorhoeve (1975) | |
| 19540 | Kapauri | irini | | | Voorhoeve (1975) | |
| 224709 | Kapriman | yerɛpm | | | Dye et al (1968) | |
| 21745 | Karas | kesamin | | | Voorhoeve (1975) | |
| 244263 | Karawa | awra | | | Laycock (1968) | |
| 121706 | Kare | wu | | | Z'graggen (1980) | bird |
| 23589 | Karon Dori | aru | | | Voorhoeve (1975) | |
| 34451 | Karon Dori | eru: | | | Miedema & Welling (1985) | |
| 16425 | Kasua | ɛnim | | | Shaw (1986) | |
| 2026 | Kasua | anemae | | | Franklin and Voorhoeve (1973) | |
| 91450 | Kâte | wipe | bird | | McElhanon (1967) | bird |
| 29381 | Kaure | ku | | | Voorhoeve (1971) | |
| 217935 | Kaure | hu | | | Clouse (1997) | |
| 19418 | Kaure | hou | | | Voorhoeve (1975) | |
| 17482 | Kawacha | mɨnavaaya | | | Lloyd (1973) | |
| 29196 | Kayagar | səpam | | | Voorhoeve (1971) | |
| 20589 | Kayagar | səpam | | | Voorhoeve (1975) | |
| 121709 | Kein | mɛːg | | | Z'graggen (1980) | bird |
| 21825 | Kemberano | kanene | | | Voorhoeve (1975) | |
| 25894 | Kemtuik | iü | | | Voorhoeve (1975) | |
| 4331 | Keoru-Ahia (Aheave Dialect) | amoila | | | Brown (1973) | |
| 4121 | Keoru-Ahia | avoilo | | | Brown (1973) | |
| 6850 | Kerewo | pʰahagama | | | Wurm (1973) | |
| 177946 | Kesawai | yene | | | Z'graggen (1980) | bird |
| 33561 | Ketengban | ma | | | Heeschen (1978) | |
| 6437 | Kibiri | barikere kumo | | | Wurm (1973) | |
| 19740 | Kimaghima | axanemö | | | Voorhoeve (1975) | |
| 237127 | Kire | kworak | | | Foley (2005) | |
| 217924 | Kirikiri | du | | | Clouse (1997) | |
| 217923 | Kirikiri (Faia Dialect) | du | | | Clouse (1997) | |
| 35131 | Klon (Halerman Dialect) | hiʔ | | | Stokhof (1975) | |
| 35012 | Klon (Probur Dialect) | hi | | | Stokhof (1975) | |
| 140956 | Kobol | nabug | | | Z'graggen (1980) | (bird) |
| 163254 | Kobon | jaur | | | Davies and Comrie (1985) | bird |
| 195990 | Kobon | yawt | + | | Pawley (2013) | |
| 15324 | Koitabu | ugu|ha | bird | | Dutton (2010) | |
| 22025 | Kokoda (Kasuweri Dialect) | kaneni | | | Voorhoeve (1975) | |
| 21985 | Kokoda (Tarof Dialect) | maniko | | | Voorhoeve (1975) | |
| 229596 | Kol | ulɛ | | | SIL (1962) | |
| 230144 | Kol | 'ule | | | SIL (1981) | |
| 91445 | Komba | ni | bird | | McElhanon (1967) | bird |
| 157429 | Komba | ni | | | McElhanon and Voorhoeve (1970) | bird |
| 148450 | Komba (Ândâ River Dialect) | nii | | | Southwell (1976) | bird |
