| orz | ormu1248 | Ormu | A,
M,
E,
O,
W,
N,
S,
Jayapura Bay | 21 |
| opo | opao1240 | Opao | E,
Western Eleman | 104 |
| ons | onoo1246 | Ono (Zankoa Dialect) | N,
F,
H,
E,
Kalasa | 14 |
| ons | onoo1246 | Ono | N,
F,
H,
E,
Kalasa | 140 |
| ons | onoo1246 | Ono (Kip Dialect) | N,
F,
H,
E,
Kalasa | 59 |
| ons | onoo1246 | Ono (Karako Dialect) | N,
F,
H,
E,
Kalasa | 12 |
| oni | onin1245 | Onin | A,
M,
T,
N,
Y,
Oninic | 10 |
| oin | ineb1235 | One, Inebu | N,
W,
O,
Central-Northern One | 46 |
| onn | onob1238 | Onabasulu | B,
Bosavi Watershed | 197 |
| aom | omie1241 | Ömie | K,
Baraic | 160 |
| jmw | mouw1234 | Omati | T,
Turama-Omatian | 97 |
| ong | oloo1241 | Olo | N,
W,
C,
W,
A,
Olo-Elkei | 46 |
| opm | oksa1245 | Oksapmin (Upper Dialect) | N,
A,
A,
Ok-Oksapmin | 30 |
| opm | oksa1245 | Oksapmin (Lower Dialect) | N,
A,
A,
Ok-Oksapmin | 95 |
| oia | oira1263 | Oirata | T,
E,
Fataluku-Oirata | 233 |
| eri | ogea1238 | Ogea | N,
M,
R,
Nuru | 346 |
| kkc | odoo1238 | Odoodee (Hesif Dialect) | East Strickland | 94 |
| kkc | odoo1238 | Odoodee (Kalamo Dialect) | East Strickland | 99 |
| bhf | odia1239 | Odiai | Isolate | 88 |
| afz | obok1239 | Obokuitai | L,
T,
E,
Eritai-Obokuitai-Biritai | 262 |
| nop | numa1254 | Numanggang (Tumung Dialect) | N,
F,
F,
E,
Boana | 80 |
| nop | numa1254 | Numanggang (Kawalang Dialect) | N,
F,
F,
E,
Boana | 74 |
| nop | numa1254 | Numanggang | N,
F,
F,
E,
Boana | 55 |
| klt | nukn1238 | Nukna (Hamelengan Dialect) | N,
F,
F,
Uruwa | 54 |
| klt | nukn1238 | Nukna | N,
F,
F,
Uruwa | 54 |
| noc | nukk1240 | Nuk (Tunam Dialect) | N,
F,
F,
E,
B,
Nek-Nuk | 111 |
| noc | nukk1240 | Nuk (Tamben Dialect) | N,
F,
F,
E,
B,
Nek-Nuk | 112 |
| noc | nukk1240 | Nuk | N,
F,
F,
E,
B,
Nek-Nuk | 57 |
| kiw | kope1239 | Northeast Kiwai (Gope Dialect) | K,
Northeast Kiwai | 101 |
| kiw | arig1248 | Northeast Kiwai (Arigibi Dialect) | K,
Northeast Kiwai | 100 |
| kiw | giba1246 | Northeast Kiwai (Gibaio Dialect) | K,
Northeast Kiwai | 100 |
| kiw | uram1241 | Northeast Kiwai (Urama Dialect) | K,
Northeast Kiwai | 99 |
| noh | nomu1240 | Nomu | N,
F,
H,
W,
C,
Dallman | 57 |
| gaw | nobo1238 | Nobonob | N,
M,
C,
M,
H,
Garuh-Foran | 402 |
| niz | ning1273 | Ningil | N,
W,
C,
W,
Ningil-Yil | 41 |
| nxr | ning1274 | Ninggerum | N,
A,
A,
O,
O,
Lowland Ok | 82 |
| niw | nimo1247 | Nimo | L,
W,
Nimo-Nakwi | 176 |
| nis | nimi1240 | Nimi | N,
F,
F,
E,
Sauk-Nimi | 55 |
| nir | nucl1633 | Nimboran | Nimboranic | 40 |
| szb | ngal1298 | Ngalum | N,
A,
A,
O,
Ok | 33 |
| nud | ngal1300 | Ngala | Ndu | 41 |
| nnf | ngai1241 | Ngaing | N,
F,
F,
G,
Unclassified Gusap-Mot | 55 |
| anh | nend1239 | Nend | N,
M,
K,
S,
S,
A,
G,
West Sogeram | 385 |
| nej | neko1240 | Neko | N,
F,
F,
G,
Gira-Neko-Nekgini | 33 |
| nkg | nekg1240 | Nekgini | N,
F,
F,
G,
Gira-Neko-Nekgini | 54 |
| nif | nekk1240 | Nek | N,
F,
F,
E,
B,
Nek-Nuk | 56 |
| nif | nekk1240 | Nek (Goambot Dialect) | N,
F,
F,
E,
B,
Nek-Nuk | 113 |
| nec | nede1245 | Nedebang | T,
A,
N,
W,
Pantar | 122 |
| nqm | ndom1245 | Ndom | Kolopom | 44 |
| nxu | kaur1271 | Narau | Kaure-Kosare | 12 |
