| 202538 | Iatmul (Brugnowi Dialect) | kəmpoy | | | Staalsen (1969) | |
| 202268 | Iatmul (Kanganaman Dialect) | kəmpoy | | | Staalsen (1969) | |
| 202401 | Iatmul (Korogo Dialect) | kəmpoy | | | Staalsen (1969) | |
| 202133 | Iatmul (Tambanam Dialect) | kəmpoy | | | Staalsen (1969) | |
| 237454 | Iatmul | kampwəy | | | Foley (2005) | |
| 218963 | Iau | bɛhɛ | | | Clouse (1997) | |
| 219052 | Indonesian | ular | | | Kriens & Lebold (2010) | |
| 74306 | Inoke-Yate | nagaloyave | | | Scott (1978) | |
| 74305 | Inoke-Yate | ósifá'vé | | | Scott (1978) | |
| 192144 | Isabi | kʌnde | | | Z'graggen (1980) | snake |
| 122466 | Isebe | man | | | Z'graggen (1980) | snake |
| 198445 | Iteri | ubɛři | | | Conrad and Dye (1975) | |
| 237766 | Iwam | now | | | Foley (2005) | |
| 178641 | Jilim | amal | | | Z'graggen (1980) | snake |
| 35800 | Kabola (Aimoli Dialect) | mʋn | | | Stokhof (1975) | |
| 36620 | Kabola (Hamap Dialect) | mon | | | Stokhof (1975) | |
| 37674 | Kabola (Pitumbang Dialect) | mɔn | | | Stokhof (1975) | |
| 34965 | Kafoa | mɔɔn | | | Stokhof (1975) | |
| 218967 | Kaiy | kai | | | Clouse (1997) | |
| 261134 | Kaki Ae | memere | | | Strong (1911) | |
| 195811 | Kalam | siyŋ-sataw | | | Pawley (2013) | |
| 36034 | Kamang | kum'ɛ | | | Stokhof (1975) | |
| 37089 | Kamang (Kolomane Dialect) | mαn'u | | | Stokhof (1975) | |
| 38612 | Kamang (Langkuru Dialect) | gum'ɛ | | | Stokhof (1975) | |
| 38378 | Kamang (Letley Dialect) | mαn'u | | | Stokhof (1975) | |
| 38260 | Kamang (Pido 1 Dialect) | mαl'ibα | | | Stokhof (1975) | |
| 38026 | Kamang (Pido 2 Dialect) | kim'ebα | | | Stokhof (1975) | |
| 74299 | Kamano | osifá've | | | Scott (1978) | |
| 32308 | Kambaira | amemandi | | | SIL () | |
| 237177 | Kanggape | kiak | | | Foley (2005) | |
| 224967 | Kapriman | bidyor | | | Dye et al (1968) | |
| 122460 | Kare | suːru | | | Z'graggen (1980) | snake |
| 92038 | Kâte | homa | snake | | McElhanon (1967) | snake |
| 29459 | Kaure | hei | | | Voorhoeve (1971) | |
| 218972 | Kaure | hay | | | Clouse (1997) | |
| 29277 | Kayagar | jekor | | | Voorhoeve (1971) | |
| 236864 | Kayan | mindop | | | Foley (2005) | |
| 122463 | Kein | man | | | Z'graggen (1980) | snake |
| 178621 | Kesawai | naile | | | Z'graggen (1980) | snake |
| 33364 | Keuw | dyóon-yè | snake (tree sp.) | | Kamholz (2012) | |
| 33363 | Keuw | péel-yò | snake (land sp.) | | Kamholz (2012) | |
| 237179 | Kire | kuruk | | | Foley (2005) | |
| 218961 | Kirikiri | keβu | | | Clouse (1997) | |
| 218960 | Kirikiri (Faia Dialect) | keβu | | | Clouse (1997) | |
| 77461 | Klon | moon | | | Baird (2008) | |
| 35201 | Klon (Halerman Dialect) | mʋn | | | Stokhof (1975) | |
| 35082 | Klon (Probur Dialect) | mon | | | Stokhof (1975) | |
| 141611 | Kobol | andu | | | Z'graggen (1980) | snake |
| 196235 | Kobon | rue | - | | Pawley (2013) | |
| 164672 | Kobon | ɾ̥e | | | Davies and Comrie (1985) | snake |
