| 90499 | Kube | moŋ | who | | McElhanon (1967) | who |
| 144825 | Kowaki | auna | | | Z'graggen (1980) | who? |
| 33849 | Kosare | kɔrɔ´ | | | Heeschen (1978) | |
| 210737 | Korowai | jæ'ʔæ:j | | | Hughes (2009) | |
| 144815 | Korak | awu(ko) | | | Z'graggen (1980) | who? |
| 16659 | Konai | kɔyɔbẽ | | | Shaw (1986) | |
| 210947 | Komyandaret | ˈjæbɯ | | | Hughes (2009) | |
| 148929 | Komba (Puleng River Dialect) | ŋâi | | | Southwell (1976) | who |
| 148837 | Komba (Gwama River (South) Dialect) | ŋâi | | | Southwell (1976) | who |
| 148791 | Komba (Gwama River (North) Dialect) | ŋârâ | | | Southwell (1976) | who |
| 148882 | Komba (Ândâ River Dialect) | ŋâi | | | Southwell (1976) | who |
| 90493 | Komba | ŋâi | who | | McElhanon (1967) | who |
| 230695 | Kol | 'anto | | | SIL (1981) | |
| 15517 | Koitabu | -are | who, which | | Dutton (2010) | |
| 165126 | Kobon | ban | | | Davies and Comrie (1985) | who |
| 196315 | Kobon | an | + | | Pawley (2013) | |
| 144830 | Kobol | mogom | | | Z'graggen (1980) | who? |
| 77543 | Klon | aqab | | | Baird (2008) | |
| 77502 | Klon | abe | | | Baird (2008) | |
| 77647 | Klon | abo | | | Baird (2008) | |
| 221537 | Kirikiri (Faia Dialect) | taβoɾe | | | Clouse (1997) | |
| 221538 | Kirikiri | naboɾo | | | Clouse (1997) | |
| 6471 | Kibiri | daweiro | | | Wurm (1973) | |
| 33424 | Keuw | mpáa-yò | | | Kamholz (2012) | |
| 33605 | Ketengban | waring | | | Heeschen (1978) | |
| 181810 | Kesawai | mɛtei | | | Z'graggen (1980) | who |
| 6883 | Kerewo | boti | | | Wurm (1973) | |
| 4155 | Keoru-Ahia | hoila | | | Brown (1973) | |
| 4365 | Keoru-Ahia (Aheave Dialect) | leia | | | Brown (1973) | |
| 126022 | Kein | i:n | | | Z'graggen (1980) | who |
| 17516 | Kawacha | tɨwakawo | | | Lloyd (1973) | |
| 221545 | Kaure | kar | | | Clouse (1997) | |
| 90498 | Kâte | moc | who | | McElhanon (1967) | who |
| 16459 | Kasua | ebʌ ibe | | | Shaw (1986) | |
| 2060 | Kasua | yipo | | | Franklin and Voorhoeve (1973) | |
| 126019 | Kare | ɛwama | | | Z'graggen (1980) | who |
| 16559 | Kamula | ʌnʌyɛ | | | Shaw (1986) | |
| 27391 | Kamula | anayɛ | | | Reesink (1976) | |
| 1760 | Kamasa | tɨgwakego | | | Lloyd (1973) | |
| 74897 | Kamano | aya'é | | | Scott (1978) | |
| 16759 | Kaluli | kiɔbʌ | | | Shaw (1986) | |
| 3317 | Kaluli | abe | | | Franklin and Voorhoeve (1973) | |
| 195881 | Kalam | anan | plural | | Pawley (2013) | |
| 195880 | Kalam | an | singular | | Pawley (2013) | |
| 6234 | Kaki Ae | naiforo | | | Brown (1973) | |
| 181831 | Jilim | mai | | | Z'graggen (1980) | who |
| 126025 | Isebe | i:ne | | | Z'graggen (1980) | who |
| 193964 | Isabi | okuowe | | | Z'graggen (1980) | who |
| 80616 | Ipili | api | | | Franklin (1975) | |
| 17207 | Ipiko | b̄a hai | | | Franklin (1973) | |
