| itz | | Itza' | M,
Y,
Y,
Mopan-Itzá | 48 |
| iws | | Sepik Iwam | S,
Iwam | 48 |
| izr | | Izere (Fobur Dialect) | N,
A,
V,
B,
P,
C,
South-Central | 44 |
| jaa | | Jamamadí (Jarawara Dialect) | A,
Jamamadi | 48 |
| jae | | Yabem | A,
M,
C,
E,
O,
W,
N,
H,
North | 82 |
| jam | | Jamaican Creole English (London Dialect) | C,
E,
A,
Western | 48 |
| jav | | Javanese | A,
M,
Javanese | 87 |
| jbw | | Yawijibaya | A,
W,
Western Worrorran | 19 |
| jei | yeii1239 | Yei | | 48 |
| jel | | Yelmek | Yelmek-Maklew | 64 |
| jic | | Tol | Jicaquean | 0 |
| jig | | Jingulu | A,
Mindi | 51 |
| jri | | Jarai | A,
M,
M,
C,
Highlands | 48 |
| jup | | Hupdë | | 48 |
| kal | | Inuktitut (West Greenlandic Dialect) | E,
E,
Inuit-Inupiaq | 48 |
| kan | | Kannada | D,
S,
T,
Kannada | 84 |
| kbh | | Camsá | | 44 |
| kcd | | Ngkolmpu | S,
M,
T,
Tonda-Kanum | 76 |
| kcj | | Cobiana | N,
A,
A,
N,
E,
Nun | 48 |
| ket | | Ket | Yeniseian | 48 |
| keu | | Akebu | N,
A,
V,
K,
L,
Kebu-Animere | 47 |
| kff | | Koya | D,
S,
G,
K,
M,
Kui-Kuvi | 48 |
| kfz | | Koromfe | N,
A,
V,
N,
G,
C,
N,
Kurumfe | 48 |
| kgp | | Kaingang | J,
S,
Kaingang | 48 |
| kgq | | Kamoro | T,
A,
Kamoro | 109 |
| khc | | Tukang Besi | A,
M,
C,
E,
S,
M,
Tukangbesi-Bonerate | 76 |
| khe | | Korowai | T,
O,
A,
Korowai | 282 |
| khk | | Mongolian (Halh Dialect) | M,
E,
O,
K,
Mongolian Proper | 48 |
| khm | | Khmer (Central Dialect) | A,
M,
E,
Khmer | 48 |
| kig | | Kimaghima | T,
Kolopom | 88 |
| kio | | Kiowa | Kiowa-Tanoan | 48 |
| kiw | | Kiwai, Northeast | T,
Kiwaian | 48 |
| kjd | | Kiwai, Southern | T,
Kiwaian | 48 |
| kjl | | Kham (Western Parbate) (Takale Dialect) | S,
T,
W,
H,
C,
K,
Kham | 48 |
| kkk | | Kokota | Western Oceanic. | 48 |
| kky | gugu1255 | Guugu Yimidhirr | | 48 |
| klc | | Kolbila | N,
A,
V,
N,
A,
A,
L,
Leko | 48 |
| kld | | Gamilaraay | A,
P,
S,
New South Wales | 48 |
| kld | | Yuwaalaraay | A,
P,
S,
New South Wales | 76 |
| kma | | Konni | N,
A,
V,
N,
G,
C,
N,
O,
Buli-Koma | 48 |
| kmh | | Kalam | Madang subgroup | 60 |
| kmn | | Awtuw | S,
Ram | 48 |
| kmo | | Kwoma | S,
Nukuma | 48 |
| kms | | Kamasau | T,
Marienberg | 48 |
| knp | | Kwanja (Njanga Dialect) | | 48 |
| knv | | Tabo | Tabo | 0 |
| knx | | Salako | A,
M,
M,
Malayic | 76 |
| kog | | Cogui | C,
C,
M,
N,
Arhuacic | 48 |
| kpc | | Curripaco | | 48 |
| kpu | | Kafoa | Timor-Alor-Pantar | 48 |
