| kol | kolp1236 | Kol | Isolate | 219 |
| knv | tabo1241 | Tabo | S,
Waia | 171 |
| knd | kond1303 | Konda | Konda-Yahadian | 40 |
| kmx | wabo1241 | Waboda | T,
Kiwaian | 167 |
| kmt | kemt1242 | Kemtuik | N,
O,
M,
Gresi-Kemtuik | 40 |
| kmo | kwom1262 | Kwoma | S,
Nukuma | 92 |
| kmn | awtu1239 | Awtuw | S,
Ram | 89 |
| kmh | kala1397 | Kalam | N,
M,
K,
K,
Etp-Ti Kalam | 381 |
| kmg | kate1253 | Kâte | N,
F,
H,
E,
T,
H,
Kate-Mape | 140 |
| kmg | wamo1241 | Kâte (Wâmora Dialect) | N,
F,
H,
E,
T,
H,
K,
Kâte | 56 |
| kmg | wemo1239 | Kâte (Wemo Dialect) | N,
F,
H,
E,
T,
H,
K,
Kâte | 54 |
| kmg | mago1249 | Kâte (Mâgobineng Dialect) | N,
F,
H,
E,
T,
H,
K,
Kâte | 54 |
| kmf | kare1341 | Kare | N,
M,
C,
Mabuso | 375 |
| klz | kabo1247 | Kabola (Hamap Dialect) | T,
A,
N,
W,
West Alor | 120 |
| klz | pint1252 | Kabola (Pitumbang Dialect) | T,
A,
N,
W,
W,
Kabola | 118 |
| klz | kabo1247 | Kabola (Aimoli Dialect) | T,
A,
N,
W,
West Alor | 125 |
| klt | nukn1238 | Nukna (Hamelengan Dialect) | N,
F,
F,
Uruwa | 54 |
| klt | nukn1238 | Nukna | N,
F,
F,
Uruwa | 54 |
| klq | rumu1243 | Rumu | T,
T,
Kairi | 102 |
| klp | kama1360 | Kamasa | A,
N,
W,
Kamasa-Susuami | 99 |
| klm | kolo1267 | Migum | N,
M,
R,
Kabenau | 300 |
| kkl | kosa1249 | Yale, Korsarek | T,
M,
Eastern | 141 |
| kkc | odoo1238 | Odoodee (Kalamo Dialect) | East Strickland | 99 |
| kkc | odoo1238 | Odoodee (Hesif Dialect) | East Strickland | 94 |
| kkb | kwer1264 | Kwerisa | L,
T,
E,
Doutai-Kai-Waritai | 37 |
| kjy | erav1244 | Erave | N,
E,
K,
S,
A,
K,
Southeast Kewa | 74 |
| kjs | east2516 | East Kewa | N,
E,
K,
S,
A,
K,
Southeast Kewa | 96 |
| kjr | kuru1305 | Kurudu | A,
M,
E,
S,
C,
Y,
Eastern Yapen | 41 |
| kjd | sout2950 | Southern Kiwai | T,
Kiwaian | 164 |
| kjd | sout2949 | Southern Kiwai (Tureture Dialect) | T,
Kiwaian | 149 |
| kja | mlap1238 | Mlap | N,
O,
Mlap-Gresi-Kemtuik | 40 |
| kiy | kiri1256 | Kirikiri | L,
T,
W,
Fayu-Kirikiri | 238 |
| kiy | faia1238 | Kirikiri (Faia Dialect) | L,
T,
W,
F,
Kirikiri | 124 |
| kiw | giba1246 | Northeast Kiwai (Gibaio Dialect) | K,
Northeast Kiwai | 100 |
| kiw | uram1241 | Northeast Kiwai (Urama Dialect) | K,
Northeast Kiwai | 99 |
| kiw | kope1239 | Northeast Kiwai (Gope Dialect) | K,
Northeast Kiwai | 101 |
| kiw | arig1248 | Northeast Kiwai (Arigibi Dialect) | K,
Northeast Kiwai | 100 |
| kit | agob1244 | Agob (Mikud Dialect) | Pahoturi | 0 |
| kit | agob1244 | Agob | Pahoturi | 4 |
| kiq | kosa1251 | Kosare | Kaure-Kosare | 98 |
| kig | kima1246 | Kimaghima | K,
Kimaama-Riantana | 45 |
| khs | kasu1251 | Kasua | B,
Bosavi Watershed | 188 |
| khp | kapo1250 | Kapauri | K,
Kapore | 38 |
| khh | kehu1238 | Keuw | East Geelvink Bay | 290 |
| khe | koro1312 | Korowai | N,
A,
A,
G,
Becking-Dawi | 206 |
| kgw | karo1303 | Karon Dori | Maybrat-Karon | 80 |
| kgv | kara1499 | Karas | West Bomberai | 40 |
| kgu | kobo1248 | Kobol | N,
M,
C,
Omosan | 347 |
| kgr | abun1252 | Abun (Senopi Dialect) | Language isolate | 52 |
| kgr | abun1252 | Abun | Language isolate | 40 |
