| urt | urat1244 | Urat | T,
W,
Urat | 40 |
| uro | urap1240 | Ura | E,
Baining | 505 |
| urn | urua1244 | Uruangnirin | A,
M,
C,
North Bomberai | 4 |
| uri | urim1252 | Urim | T,
Urim | 46 |
| urg | urig1240 | Urigina | T,
M,
R,
Peka | 354 |
| ulk | meri1244 | Meriam | Eastern Trans-Fly | 0 |
| ulf | usku1243 | Usku | Unclassified | 116 |
| ukg | ukur1240 | Ukuriguma | T,
M,
C,
P,
Numugenan | 354 |
| uhn | dama1272 | Damal | T,
Damal | 50 |
| ufi | ufim1240 | Ufim | T,
F,
F,
Gusap-Mot | 51 |
| uar | tair1256 | Tairuma | T,
E,
N,
E. | 111 |
| tzx | tabr1243 | Tabriak | R,
L,
Karawari | 509 |
| tyn | komb1274 | Kombai | T,
O,
A,
Dumut | 71 |
| tya | tauy1241 | Tauya | T,
M,
R,
Biyom-Tauya | 339 |
| txt | seng1282 | Citak (Citak, Senggo Dialect) | T,
A,
Asmat | 201 |
| txt | cita1245 | Citak (Brazza River Dialect) | T,
A,
Asmat | 26 |
| txt | cita1245 | Citak | T,
A,
Asmat | 25 |
| txt | cita1245 | Citak (Upper Sirec Dialect) | T,
A,
Asmat | 42 |
| twe | teiw1235 | Teiwa (Sargang Dialect) | T,
W,
T,
A,
Pantar | 123 |
| twe | mada1286 | Teiwa (Madar Dialect) | T,
W,
T,
A,
Pantar | 121 |
| twe | dein1238 | Teiwa (Deing Dialect) | T,
W,
T,
A,
Pantar | 120 |
| twe | leba1239 | Teiwa (Lebang Dialect) | T,
W,
T,
A,
Pantar | 118 |
| tvo | tido1248 | Tidore | W,
N,
Ternate-Tidore | 214 |
| tty | sika1263 | Sikaritai | L,
T,
East | 234 |
| ttn | towe1240 | Towei | P,
Western | 36 |
| tti | toba1266 | Tobati | A,
M,
C,
E,
O,
W,
N,
S,
Jayapura Bay | 21 |
| ttd | taua1242 | Tauade | T,
S,
G,
Kunimaipa | 183 |
| tsx | muba1238 | Mubami | T,
I,
Minanibai | 206 |
| trt | tung1293 | Tunggare | East Geelvink Bay | 40 |
| tqu | touo1238 | Mbaniata | Central Solomons | 242 |
| tqo | sepo1239 | Toaripi (Sepoe Dialect) | T,
E,
N,
E. | 112 |
| tqo | toar1246 | Toaripi | T,
E,
N,
E. | 114 |
| tpi | tokp1240 | Tok Pisin | C,
E,
Pacific | 128 |
| tpg | kula1280 | Kula | T,
W,
T,
Tanglapui | 129 |
| tpf | tarp1240 | Tarpia | A,
M,
C,
E,
O,
W,
N,
S,
Sarmi | 25 |
| tof | gizr1240 | Gizra (Togo Dialect) | Eastern Trans-Fly | 94 |
| tof | gizr1240 | Gizra (Kupere Dialect) | Eastern Trans-Fly | 94 |
| tof | waid1239 | Gizra (Waidoro Dialect) | Eastern Trans-Fly | 182 |
| tof | gizr1240 | Gizrra | Eastern Trans-Fly | 1 |
| tni | tand1253 | Tandia | A,
M,
C,
E,
S,
W,
C,
Tandia | 7 |
| tmu | iauu1242 | Iau | L,
T,
Central | 262 |
| tmu | foii1242 | Lau | L,
T,
Central | 38 |
| tmj | sama1240 | Samarokena | T,
G,
K,
West Coast | 12 |
| tmd | haru1245 | Haruai (Wiyaw Dialect) | Piawi | 113 |
| tmd | haru1245 | Haruai | Piawi | 116 |
| tlg | tofa1246 | Tofanma | Unclassified | 119 |
| tlf | tele1256 | Telefol | T,
O,
O,
Mountain | 187 |
| tkx | tang1353 | Tangko | T,
O,
O,
Tangko | 217 |
| tim | timb1251 | Timbe | T,
F,
H,
Western | 197 |
| tif | tifa1245 | Tifal | T,
O,
O,
Mountain | 152 |
