| jil | jili1241 | Jilim | N,
M,
R,
M,
Upper Minjim | 331 |
| klz | kabo1247 | Kabola (Aimoli Dialect) | T,
A,
N,
W,
West Alor | 125 |
| klz | kabo1247 | Kabola (Hamap Dialect) | T,
A,
N,
W,
West Alor | 120 |
| uka | kabu1249 | Kaburi (Kambor Dialect) | South Bird's Head | 62 |
| uka | kabu1249 | Kaburi (Benawa Dialect) | South Bird's Head | 4 |
| kpu | kafo1240 | Kafoa | T,
A,
Nuclear Alor-Pantar | 117 |
| kct | kaia1245 | Kayan | R,
L,
O,
Watam-Kaian | 64 |
| kain1273 | Proto-Kainantu-Goroka | Nuclear Trans New Guinea | 1 |
| kain1274 | Proto-Eastern | N,
Kainantu-Goroka | 48 |
| kain1274 | Proto-Kainantu | N,
Kainantu-Goroka | 1 |
| kzm | kais1235 | Kais | South Bird's Head | 118 |
| tcq | kaiy1239 | Kaiy | L,
T,
E,
Doutai-Kai-Waritai | 235 |
| tbd | kaki1249 | Kaki Ae | T,
E,
Tate | 254 |
| kzz | kala1256 | Kalabra | W,
South West Bird's Head | 38 |
| kmh | kala1397 | Kalam | N,
M,
K,
K,
Etp-Ti Kalam | 381 |
| lev | kalo1261 | Western Pantar (Kalondama Dialect) | T,
W,
T,
A,
Pantar | 119 |
| bco | kalu1248 | Kaluli (Bosavi Dialect) | B,
B,
Kaluli-Sunia | 35 |
| bco | kalu1248 | Kaluli | B,
B,
Kaluli-Sunia | 200 |
| klp | kama1360 | Kamasa | A,
N,
W,
Kamasa-Susuami | 99 |
| woi | kama1365 | Kamang (Pido 2 Dialect) | T,
A,
N,
C,
Abuic | 123 |
| woi | kama1365 | Kamang (Kolomane Dialect) | T,
A,
N,
C,
Abuic | 120 |
| woi | kama1365 | Kamang (Langkuru Dialect) | T,
A,
N,
C,
Abuic | 121 |
| woi | kama1365 | Kamang (Pido 1 Dialect) | T,
A,
N,
C,
Abuic | 127 |
| woi | kama1365 | Kamang | T,
A,
N,
C,
Abuic | 126 |
| woi | kama1365 | Kamang (Letley Dialect) | T,
A,
N,
C,
Abuic | 122 |
| kbq | kama1370 | Kamano | N,
K,
G,
N,
S,
Kamano-Yagaria | 192 |
| irx | kamb1302 | Kamberau | N,
A,
A,
Sabakor | 40 |
| kyy | kamb1303 | Kambaira | N,
K,
K,
Unclassified Kainantu | 98 |
| kbx | kamb1306 | Ap Ma (Kambaramba Dialect) | K,
E,
Ap Ma | 99 |
| kgq | kamo1255 | Kamoro | N,
A,
Asmat-Kamoro | 94 |
| xla | kamu1260 | Kamula | Kamula-Elevala | 205 |
| igm | kang1291 | Kanggape | R,
G,
A,
Tangu-Igom | 60 |
| gdr | kapa1255 | Wipi (Kapal Dialect) | Eastern Trans-Fly | 99 |
| khp | kapo1250 | Kapauri | K,
Kapore | 38 |
| dju | kapr1245 | Kapriman | S,
S,
C,
N,
Kapriman-Watakataui | 120 |
| xrw | kara1495 | Karawa | S,
R,
Pouye-Karawa | 46 |
| kgv | kara1499 | Karas | West Bomberai | 40 |
| kmf | kare1341 | Kare | N,
M,
C,
Mabuso | 375 |
| kgw | karo1303 | Karon Dori | Maybrat-Karon | 80 |
| kasu1243 | Kokoda (Kasueri Dialect) | S,
East South Bird's Head | 144 |
| xod | kasu1243 | Kokoda (Kasuweri Dialect) | S,
E,
Kokoda | 38 |
| khs | kasu1251 | Kasua | B,
Bosavi Watershed | 188 |
| kmg | kate1253 | Kâte | N,
F,
H,
E,
T,
H,
Kate-Mape | 140 |
| kauk1240 | Proto-Kaukombar | N,
M,
C,
G,
Northern Adelbert | 17 |
| nxu | kaur1271 | Narau | Kaure-Kosare | 12 |
| bpp | kaur1271 | Kaure | Kaure-Kosare | 327 |
| xau | kauw1242 | Kauwera | G,
K,
Kwerbaic | 40 |
| kcb | kawa1276 | Kawacha | A,
N,
Wojokesic | 106 |
| kyt | kaya1328 | Kayagar | K,
Kaygir-Tamagario | 128 |
| khh | kehu1238 | Keuw | East Geelvink Bay | 290 |
