| kxz | kere1286 | Kerewo | K,
Turama-Kerewo | 101 |
| kxw | kona1242 | Konai | East Strickland | 100 |
| kwt | kwes1245 | Kwesten | T,
Tor | 43 |
| kwh | kowi1239 | Kowiai | A,
M,
G,
B,
S,
Geser-Gorom-Bati | 8 |
| kwe | nucl1595 | Kwerba | G,
K,
Kwerbaic | 41 |
| kwe | nucl1595 | Kwerba (Airmati Dialect) | G,
K,
Kwerbaic | 38 |
| kvz | tsak1250 | Tsaukambo | T,
O,
O,
Ngalum | 209 |
| kvw | wers1238 | Wersing | T,
W,
Timor-Alor-Pantar | 125 |
| kvg | kuni1265 | Kuni-Boazi (Boazi Dialect) | A,
M,
Boazi | 49 |
| kvg | kuni1265 | Kuni-Boazi | A,
M,
Boazi | 265 |
| kvg | kuni1265 | Kuni-Boazi (Kuini Dialect) | A,
M,
Boazi | 4 |
| kvd | kira1248 | Kui (Kiramang Dialect) | T,
A,
N,
C,
Kui (Indonesia) | 132 |
| kvd | kuii1253 | Kui | T,
A,
N,
Central Alor | 118 |
| kuo | kumu1247 | Kumukio | N,
F,
H,
W,
C,
D,
Kinalakna-Kumukio | 52 |
| kue | kuma1280 | Kuman | N,
C,
S,
N,
Kuman-Dom-Gunaa | 258 |
| kts | sout2940 | Muyu, South | N,
A,
A,
O,
O,
L,
Division A Lowland Ok | 100 |
| kto | kuot1243 | Kuot | Language isolate | 293 |
| kti | nort2916 | Muyu, North | N,
A,
A,
O,
O,
L,
Division A Lowland Ok | 102 |
| ksr | boro1279 | Borong | N,
F,
H,
W,
R,
P,
Kosorong-Burum-Mindik | 190 |
| ksj | uare1241 | Uare | T,
S,
Kwalean | 421 |
| kql | kyen1243 | Kyenele (Miyak Dialect) | Y,
Miyak-Bun-Biwat | 98 |
| kql | kyen1243 | Kyenele (Kyaimbarang Dialect) | Y,
Miyak-Bun-Biwat | 117 |
| kqi | koit1244 | Koitabu | K,
K,
Koita-Koiari | 176 |
| kqc | doro1266 | Doromu-Koki (Lofaika Dialect) | Manubaran | 252 |
| kqc | doro1266 | Doromu-Koki (Bareika Dialect) | Manubaran | 265 |
| kqc | doro1266 | Doromu-Koki (Aramaika Dialect) | Manubaran | 260 |
| kqb | kova1243 | Kovai | N,
F,
H,
E,
Trans Vitiaz | 40 |
| kqa | mumm1238 | Mum | N,
M,
K,
S,
S,
North Sogeram | 419 |
| kpx | moun1252 | Mountain Koiari | K,
K,
Biage-Mountain Koiali | 185 |
| kpw | kobo1249 | Kobon | N,
M,
K,
Kalam-Kobon | 486 |
| kpu | kafo1240 | Kafoa | T,
A,
Nuclear Alor-Pantar | 117 |
| kps | tehi1237 | Tehit | W,
West Bird's Head | 39 |
| kpr | kora1294 | Yegha (Yega Dialect) | T,
G,
B,
N,
S,
C,
Gaena-Korafe | 130 |
| kpr | kora1294 | Yegha (Oukena Dialect) | T,
G,
B,
N,
S,
C,
Gaena-Korafe | 83 |
| kpr | kora1294 | Korafe (Rabade Dialect) | N,
G,
B,
N,
S,
C,
Gaena-Korafe | 91 |
| 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 | Yegha (Ambe-Dofo Dialect) | T,
G,
B,
N,
S,
C,
Gaena-Korafe | 50 |
| kpq | koru1245 | Korapun-Sela | N,
M,
Western Mek | 40 |
| kpf | komb1273 | Komba (Ândâ River Dialect) | N,
F,
H,
W,
C,
K,
Selepet-Komba | 161 |
| 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 | N,
F,
H,
W,
C,
K,
Selepet-Komba | 198 |
| koz | kora1296 | Korak | N,
M,
C,
G,
Kowan | 347 |
| kop | kwat1244 | Waube | T,
M,
R,
Nuru | 347 |
| kol | kolp1236 | Kol | Isolate | 219 |
| knv | tabo1241 | Tabo | S,
Waia | 171 |
| knd | kond1303 | Konda | Konda-Yahadian | 40 |
