| 19571 | Kapauri | wano | | | Voorhoeve (1975) | |
| 21061 | Kanum | tor | | | Voorhoeve (1975) | |
| 237077 | Kanggape | dər | | | Foley (2005) | |
| 27319 | Kamula | ɛpe | | | Reesink (1976) | |
| 16490 | Kamula | ɛpe | | | Shaw (1986) | |
| 157301 | Kamoro | titi | | | McElhanon and Voorhoeve (1970) | tooth |
| 21375 | Kamoro | titi | | | Voorhoeve (1975) | |
| 21415 | Kamberau | siʔa | | | Voorhoeve (1975) | |
| 32227 | Kambaira | ibandi | | | SIL () | |
| 1691 | Kamasa | maanga | | | Lloyd (1973) | |
| 74654 | Kamano | (ä)vé' | | | Scott (1978) | |
| 37927 | Kamang (Pido 2 Dialect) | nɛʔ | | | Stokhof (1975) | |
| 38161 | Kamang (Pido 1 Dialect) | nɛɛh | | | Stokhof (1975) | |
| 260613 | Kamang (Letley Dialect) | nαw'ɛsi | | | Stokhof (1975) | |
| 260612 | Kamang (Letley Dialect) | nαw'ɛs | | | Stokhof (1975) | |
| 38513 | Kamang (Langkuru Dialect) | nɛh | | | Stokhof (1975) | |
| 36990 | Kamang (Kolomane Dialect) | nαy | | | Stokhof (1975) | |
| 35935 | Kamang | nɛh | | | Stokhof (1975) | |
| 16690 | Kaluli | bis | | | Shaw (1986) | |
| 3248 | Kaluli | beso | | | Franklin and Voorhoeve (1973) | |
| 157323 | Kaluli (Bosavi Dialect) | pes | | | McElhanon and Voorhoeve (1970) | tooth |
| 195851 | Kalam | meg | | | Pawley (2013) | |
| 195852 | Kalam | meg magi | | | Pawley (2013) | |
| 20016 | Kalabra | tela | | | Voorhoeve (1975) | |
| 261150 | Kaki Ae | fou | | | Strong (1911) | |
| 6165 | Kaki Ae | huʔu | | | Brown (1973) | |
| 23151 | Kaiy | abri | | | Voorhoeve (1975) | |
| 25645 | Kais | eresino | | | Voorhoeve (1975) | |
| 34866 | Kafoa | ninαwɛh'ɛŋ | | | Stokhof (1975) | |
| 37575 | Kabola (Pitumbang Dialect) | nafih'iŋ | | | Stokhof (1975) | |
| 36521 | Kabola (Hamap Dialect) | nαf'ihiŋ | | | Stokhof (1975) | |
| 35701 | Kabola (Aimoli Dialect) | nαf'ihiŋ | | | Stokhof (1975) | |
| 176823 | Jilim | mʌ | | | Z'graggen (1980) | tooth |
| 157339 | Iyo | miti | | | McElhanon and Voorhoeve (1970) | tooth |
| 243405 | Iwam | piknu | | | Laycock (1968) | |
| 237672 | Iwam | piknu | | | Foley (2005) | |
| 22867 | Itik | ur | | | Voorhoeve (1975) | |
| 197289 | Iteri (Rocky Peak Dialect) | ʔe | | | Conrad and Dye (1975) | |
| 198454 | Iteri | ɩ | | | Conrad and Dye (1975) | |
| 120470 | Isebe | ai- | | | Z'graggen (1980) | tooth |
| 191112 | Isabi | -sia | | | Z'graggen (1980) | tooth |
| 24124 | Irarutu | rforu | | | Voorhoeve (1975) | |
| 17138 | Ipiko | tá | | | Franklin (1973) | |
| 74659 | Inoke-Yate | (a)vé(ná) | | | Scott (1978) | |
| 3556 | Ikobi-Mena | ka̧i̧ yo | | | Franklin (1973) | |
| 21695 | Iha | mihin-tap | | | Voorhoeve (1975) | |
| 237382 | Iatmul | nɨmpɨy | | | Foley (2005) | |
| 55243 | Hunjara-Kaina Ke | di | tooth | | Smallhorn (2011) | |
| 257604 | Humene | voˈnone | | | Dutton (1970) | tooth |
| 31985 | Huli | ne | | | SIL (1992) | |
