| kco | kina1251 | Kinalakna | N,
F,
H,
W,
C,
D,
Kinalakna-Kumukio | 57 |
| kvd | kira1248 | Kui (Kiramang Dialect) | T,
A,
N,
C,
Kui (Indonesia) | 132 |
| geb | kire1240 | Kire | R,
L,
Ruboni | 64 |
| kiy | kiri1256 | Kirikiri | L,
T,
W,
Fayu-Kirikiri | 238 |
| kgu | kobo1248 | Kobol | N,
M,
C,
Omosan | 347 |
| kpw | kobo1249 | Kobon | N,
M,
K,
Kalam-Kobon | 486 |
| koia1260 | Proto-Koiarian | T,
S,
Koiarian | 124 |
| koia1261 | Proto-Koiariac | Koiarian | 85 |
| kqi | koit1244 | Koitabu | K,
K,
Koita-Koiari | 176 |
| xod | koko1265 | Kokoda (Tarof Dialect) | S,
East South Bird's Head | 38 |
| klm | kolo1267 | Migum | N,
M,
R,
Kabenau | 300 |
| kol | kolp1236 | Kol | Isolate | 219 |
| kpf | komb1273 | Komba | N,
F,
H,
W,
C,
K,
Selepet-Komba | 198 |
| kpf | komb1273 | Komba (Gwama River (North) Dialect) | N,
F,
H,
W,
C,
K,
Selepet-Komba | 160 |
| kpf | komb1273 | Komba (Gwama River (South) Dialect) | N,
F,
H,
W,
C,
K,
Selepet-Komba | 159 |
| kpf | komb1273 | Komba (Puleng River Dialect) | N,
F,
H,
W,
C,
K,
Selepet-Komba | 161 |
| kpf | komb1273 | Komba (Ândâ River Dialect) | N,
F,
H,
W,
C,
K,
Selepet-Komba | 161 |
| tyn | komb1274 | Kombai | N,
A,
A,
G,
A,
Ndeiram | 71 |
| kzv | komy1238 | Komyandaret | N,
A,
A,
G,
B,
Tsakwambo-Komyandaret | 211 |
| kxw | kona1242 | Konai | East Strickland | 100 |
| knd | kond1303 | Konda | Konda-Yahadian | 40 |
| kdw | kone1241 | Koneraw | Mombum-Koneraw | 37 |
| xop | kopa1248 | Kopar (Singarin Dialect) | L,
Nor | 225 |
| xop | kopa1248 | Kopar | L,
Nor | 102 |
| kiw | kope1239 | Northeast Kiwai (Gope Dialect) | K,
Northeast Kiwai | 101 |
| kpr | kora1294 | Yegha (Oukena Dialect) | T,
G,
B,
N,
S,
C,
Gaena-Korafe | 83 |
| kpr | kora1294 | Korafe (Mokorua Dialect) | N,
G,
B,
N,
S,
C,
Gaena-Korafe | 83 |
| kpr | kora1294 | Yegha (Korafe Dialect) | T,
G,
B,
N,
S,
C,
Gaena-Korafe | 520 |
| kpr | kora1294 | Korafe | N,
G,
B,
N,
S,
C,
Gaena-Korafe | 52 |
| kpr | kora1294 | Korafe (Rabade Dialect) | N,
G,
B,
N,
S,
C,
Gaena-Korafe | 91 |
| kpr | kora1294 | Yegha (Ambe-Dofo Dialect) | T,
G,
B,
N,
S,
C,
Gaena-Korafe | 50 |
| kpr | kora1294 | Yegha (Yega Dialect) | T,
G,
B,
N,
S,
C,
Gaena-Korafe | 130 |
| koz | kora1296 | Korak | N,
M,
C,
G,
Kowan | 347 |
| khe | koro1312 | Korowai | N,
A,
A,
G,
Becking-Dawi | 206 |
| kpq | koru1245 | Korapun-Sela | N,
M,
Western Mek | 40 |
| kkl | kosa1249 | Yale, Korsarek | T,
M,
Eastern | 141 |
| kiq | kosa1251 | Kosare | Kaure-Kosare | 98 |
| kqb | kova1243 | Kovai | N,
F,
H,
E,
Trans Vitiaz | 40 |
| xow | kowa1245 | Kowaki | N,
M,
C,
G,
N,
K,
T,
Nuclear Tibor | 316 |
| kowa1247 | Proto-Korak-Waskia | N,
M,
C,
Greater Northern Adelbert | 11 |
| kwh | kowi1239 | Kowiai | A,
M,
G,
B,
S,
Geser-Gorom-Bati | 8 |
| kgf | kube1244 | Kube | N,
F,
H,
W,
R,
Pindiu | 194 |
| jko | kubo1242 | Kubo | E,
Kubo-Samo-Bibo | 248 |
| kvd | kuii1253 | Kui | T,
A,
N,
Central Alor | 118 |
| tpg | kula1280 | Kula | T,
A,
East Alor | 129 |
| kue | kuma1280 | Kuman | N,
C,
S,
N,
Kuman-Dom-Gunaa | 258 |
| kumi1249 | Proto-Kumil | N,
M,
C,
G,
N,
Kumil-Tibor | 23 |
| kuo | kumu1247 | Kumukio | N,
F,
H,
W,
C,
D,
Kinalakna-Kumukio | 52 |
| bon | kuni1264 | Bine (Kunini Dialect) | E,
Bine | 168 |
| kvg | kuni1265 | Kuni-Boazi (Boazi Dialect) | A,
M,
Boazi | 49 |
