| 148374 | Komba (Ândâ River Dialect) | zagât | | | Southwell (1976) | two |
| 90563 | Komba | zâhât | two | | McElhanon (1967) | two |
| 229632 | Kol | tɛřɛŋ | | | SIL (1962) | |
| 230622 | Kol | te'tepe | | | SIL (1981) | |
| 22018 | Kokoda (Tarof Dialect) | oja | | | Voorhoeve (1975) | |
| 22058 | Kokoda (Kasuweri Dialect) | ogia | | | Voorhoeve (1975) | |
| 15380 | Koitabu | ab | two | | Dutton (2010) | |
| 196290 | Kobon | m+höp | - | | Pawley (2013) | |
| 196289 | Kobon | mɨhay | - | | Pawley (2013) | |
| 164084 | Kobon | mə'hʌϕ | | | Davies and Comrie (1985) | two |
| 143915 | Kobol | ambur | | | Z'graggen (1980) | (two) |
| 35028 | Klon (Probur Dialect) | ər'u | | | Stokhof (1975) | |
| 35147 | Klon (Halerman Dialect) | ər'ak | | | Stokhof (1975) | |
| 77549 | Klon | rok | | | Baird (2008) | |
| 77546 | Klon | orok | | | Baird (2008) | |
| 214645 | Kirikiri (Faia Dialect) | ɔɾo-we | | | Clouse (1997) | |
| 214646 | Kirikiri | ɔɾo-we | | | Clouse (1997) | |
| 237015 | Kire | pʰunini | | | Foley (2005) | |
| 19773 | Kimaghima | kave | | | Voorhoeve (1975) | |
| 6479 | Kibiri | buakei | | | Wurm (1973) | |
| 33409 | Keuw | páid-yô | | | Kamholz (2012) | |
| 33597 | Ketengban | bitini | | | Heeschen (1978) | |
| 180941 | Kesawai | aere | | | Z'graggen (1980) | two |
| 6891 | Kerewo | neʔewa | | | Wurm (1973) | |
| 4163 | Keoru-Ahia | lahoaha | | | Brown (1973) | |
| 4373 | Keoru-Ahia (Aheave Dialect) | lahoaha | | | Brown (1973) | |
| 25927 | Kemtuik | namon | | | Voorhoeve (1975) | |
| 21858 | Kemberano | ugi | | | Voorhoeve (1975) | |
| 125020 | Kein | ʌ:riʌʔ | | | Z'graggen (1980) | two |
| 236691 | Kayan | mbuniŋ | | | Foley (2005) | |
| 20622 | Kayagar | tosigi | | | Voorhoeve (1975) | |
| 29261 | Kayagar | tosigi | | | Voorhoeve (1971) | |
| 17524 | Kawacha | huvaa'u | | | Lloyd (1973) | |
| 22586 | Kauwera | ninic | | | Voorhoeve (1975) | |
| 214657 | Kaure | tɾapli | | | Clouse (1997) | |
| 19451 | Kaure | təravərei | | | Voorhoeve (1975) | |
| 29447 | Kaure | trapi | | | Voorhoeve (1971) | |
| 90568 | Kâte | yayahec | two | | McElhanon (1967) | two |
| 16467 | Kasua | ɛľipi | | | Shaw (1986) | |
| 23622 | Karon Dori | ai | | | Voorhoeve (1975) | |
| 34484 | Karon Dori | ayok | | | Miedema & Welling (1985) | |
| 125017 | Kare | iridigi | | | Z'graggen (1980) | two |
| 244636 | Karawa | yikəramo | | | Laycock (1968) | |
| 21778 | Karas | ir | | | Voorhoeve (1975) | |
| 224853 | Kapriman | kothi | | | Dye et al (1968) | |
| 19573 | Kapauri | nafrine | | | Voorhoeve (1975) | |
| 21063 | Kanum | yempoka | | | Voorhoeve (1975) | |
| 237013 | Kanggape | mokupea | | | Foley (2005) | |
| 27400 | Kamula | dapiamɛtɛ | | | Reesink (1976) | |
| 16567 | Kamula | depiʌmɛtɛ | | | Shaw (1986) | |
