| 17139 | Ipiko | a̧′ha̧ | | | Franklin (1973) | |
| 80419 | Ipili | eke | | | Franklin (1975) | |
| 191079 | Isabi | -ɛhuɸamina | | | Z'graggen (1980) | tongue |
| 120407 | Isebe | belea- | | | Z'graggen (1980) | tongue |
| 198453 | Iteri | lɛtɛ | | | Conrad and Dye (1975) | |
| 237689 | Iwam | kwane | | | Foley (2005) | |
| 243444 | Iwam | kwane | | | Laycock (1968) | |
| 154861 | Iyo | mipi | | | McElhanon and Voorhoeve (1970) | tongue |
| 176764 | Jilim | eŋ | | | Z'graggen (1980) | tongue |
| 35700 | Kabola (Aimoli Dialect) | nαl'ibuŋ | | | Stokhof (1975) | |
| 36520 | Kabola (Hamap Dialect) | nαr'ɛbuŋ | | | Stokhof (1975) | |
| 37574 | Kabola (Pitumbang Dialect) | nαlib'uŋ | | | Stokhof (1975) | |
| 34865 | Kafoa | ninαl'ip | | | Stokhof (1975) | |
| 212863 | Kaiy | a-ɾijɛ | | | Clouse (1997) | |
| 6166 | Kaki Ae | anara | | | Brown (1973) | |
| 261149 | Kaki Ae | anara | | | Strong (1911) | |
| 195850 | Kalam | aleb | | | Pawley (2013) | |
| 154850 | Kaluli (Bosavi Dialect) | inem | | | McElhanon and Voorhoeve (1970) | tongue |
| 3249 | Kaluli | sano | | | Franklin and Voorhoeve (1973) | |
| 16691 | Kaluli | eʌn | | | Shaw (1986) | |
| 35934 | Kamang | nak'ey | | | Stokhof (1975) | |
| 36989 | Kamang (Kolomane Dialect) | nαg'ɛr | | | Stokhof (1975) | |
| 38512 | Kamang (Langkuru Dialect) | nαg'ɛt | | | Stokhof (1975) | |
| 38278 | Kamang (Letley Dialect) | nalp'u | | | Stokhof (1975) | |
| 38160 | Kamang (Pido 1 Dialect) | nαg'ɛ | | | Stokhof (1975) | |
| 37926 | Kamang (Pido 2 Dialect) | nɛg'ɛʔ | | | Stokhof (1975) | |
| 74637 | Kamano | (ä)gänéfu'na | | | Scott (1978) | |
| 1692 | Kamasa | tewa | | | Lloyd (1973) | |
| 32226 | Kambaira | imaifindi | | | SIL () | |
| 154828 | Kamoro | mare | | | McElhanon and Voorhoeve (1970) | tongue |
| 27320 | Kamula | te | | | Reesink (1976) | |
| 16491 | Kamula | tɛ | | | Shaw (1986) | |
| 237091 | Kanggape | mimiaŋ | | | Foley (2005) | |
| 224765 | Kapriman | thʌdɩs | | | Dye et al (1968) | |
| 243438 | Karawa | laləpi | | | Laycock (1968) | |
| 120401 | Kare | mambramba | | | Z'graggen (1980) | tongue |
| 16391 | Kasua | tepɛ | | | Shaw (1986) | |
| 1992 | Kasua | tepe | | | Franklin and Voorhoeve (1973) | |
| 91520 | Kâte | nameŋ- | (its) tongue | | McElhanon (1967) | (its) tongue |
| 154926 | Kâte (Mâgobineng Dialect) | nameŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 154927 | Kâte (Wâmora Dialect) | nameŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 154928 | Kâte (Wemo Dialect) | nameŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 212868 | Kaure | sɾumu | | | Clouse (1997) | |
| 29444 | Kaure | sremu | | | Voorhoeve (1971) | |
| 17448 | Kawacha | teva | | | Lloyd (1973) | |
| 29258 | Kayagar | marap | | | Voorhoeve (1971) | |
| 236779 | Kayan | memraŋ | | | Foley (2005) | |
| 120404 | Kein | minɔ- | | | Z'graggen (1980) | tongue |
| 4297 | Keoru-Ahia (Aheave Dialect) | eru | | | Brown (1973) | |
| 4087 | Keoru-Ahia | hailu | | | Brown (1973) | |
