| kgr | abun1254 | Abun (Karon Pantai Dialect) | Abun | 40 |
| kgr | abun1252 | Abun (Jembun Dialect) | Language isolate | 40 |
| kgq | kamo1255 | Kamoro | N,
A,
Asmat-Kamoro | 94 |
| kgf | kube1244 | Kube | N,
F,
H,
W,
R,
Pindiu | 194 |
| kew | west2599 | West Kewa | T,
E,
Angal-Kewa | 189 |
| kdw | kone1241 | Koneraw | Mombum-Koneraw | 37 |
| kct | kaia1245 | Kayan | R,
L,
O,
Watam-Kaian | 64 |
| kco | kina1251 | Kinalakna | N,
F,
H,
W,
C,
D,
Kinalakna-Kumukio | 57 |
| kcd | ngka1235 | Kanum | Y,
K,
N,
Ngkantr | 41 |
| kcb | kawa1276 | Kawacha | A,
N,
Wojokesic | 106 |
| kbx | kamb1306 | Ap Ma (Kambaramba Dialect) | K,
E,
Ap Ma | 99 |
| kbx | apma1241 | Ap Ma | K,
East Keram | 181 |
| kbv | dera1245 | Dera (Amgotro Dialect) | Senagi | 110 |
| kbv | dera1245 | Dera | Senagi | 40 |
| kbv | dera1245 | Dera (MoĊgowar Dialect) | Senagi | 80 |
| kbq | kama1370 | Kamano | N,
K,
G,
N,
S,
Kamano-Yagaria | 192 |
| kbk | gras1249 | Grass Koiari | K,
K,
Koita-Koiari | 191 |
| jmw | mouw1234 | Omati | T,
Turama-Omatian | 97 |
| jma | dima1252 | Dima | D,
Central Dagan | 197 |
| jko | kubo1242 | Kubo | E,
Kubo-Samo-Bibo | 248 |
| jil | jili1241 | Jilim | N,
M,
R,
M,
Upper Minjim | 331 |
| jet | mane1266 | Manem | B,
W,
Nuclear Warisic | 141 |
| jel | yelm1242 | Yelmek | S,
Yelmek-Maklew | 42 |
| jei | yeii1239 | Yei | S,
M,
Yey | 41 |
| jbj | aran1237 | Arandai (Sebyar Dialect) | S,
E,
Kemberanic | 203 |
| jbj | aran1237 | Arandai (Barau Dialect) | S,
E,
Kemberanic | 151 |
| jbj | aran1237 | Arandai (Kasuwer Dialect) | S,
E,
Kemberanic | 95 |
| jbj | aran1237 | Arandai | S,
E,
Kemberanic | 39 |
| jbj | aran1237 | Arandai (Weriagar Dialect) | S,
E,
Kemberanic | 301 |
| jbj | aran1237 | Arandai (Tarof Dialect) | S,
E,
Kemberanic | 79 |
| jau | yaur1239 | Yaur | A,
M,
C,
E,
S,
W,
C,
Yaur | 19 |
| jaq | yaqa1246 | Yaqay (Wanggate Dialect) | T,
M,
Yaqay | 220 |
| jaq | yaqa1246 | Yaqay (Kotup Dialect) | T,
M,
Yaqay | 222 |
| jaq | yaqa1246 | Yaqay (Kogo Dialect) | T,
M,
Yaqay | 228 |
| jaq | yaqa1246 | Yaqay | T,
M,
Yaqay | 188 |
| jaq | yaqa1246 | Yaqay (Wairu Dialect) | T,
M,
Yaqay | 225 |
| jaq | yaqa1246 | Yaqay (Rayam Dialect) | T,
M,
Yaqay | 119 |
| iwm | iwam1256 | Iwam | S,
I,
Iwamic | 94 |
| itx | itik1240 | Itik | T,
Tor | 37 |
| itr | iter1241 | Iteri | L,
W,
Iteri-Bo | 80 |
| itr | iter1241 | Iteri (Rocky Peak Dialect) | L,
W,
Iteri-Bo | 91 |
| isa | isab1240 | Isabi | N,
K,
G,
Unclassified Goroka | 282 |
| irx | kamb1302 | Kamberau | N,
A,
A,
Sabakor | 40 |
| irh | irar1238 | Irarutu | A,
M,
T,
E,
Nabi-Irarutu | 50 |
| ire | ires1239 | Yeresiam | A,
M,
C,
E,
S,
W,
C,
Iresim | 16 |
| ipo | ipik1244 | Ipiko | A,
Inland Gulf of Papua | 113 |
| ipi | ipil1240 | Ipili | N,
E,
Engan | 96 |
| iou | tuma1250 | Tuma-Irumu (Irumu Dialect) | T,
F,
F,
Wantoat | 52 |
| ino | inok1238 | Inoke-Yate | N,
K,
G,
N,
S,
Kamano-Yagaria | 252 |
| ind | indo1316 | Indonesian | A,
M,
M,
M,
N,
Standard Malay-Indonesian | 232 |
