| 5989 | Onabasulu | sone | arm | | Shaw (1973) | arm |
| 14293 | Ömie | nam|ij-e | arm | | Dutton (2010) | |
| 3664 | Omati | si | arm | | Franklin (1973) | arm |
| 243455 | Olo | e:təf | | | Laycock (1968) | |
| 177025 | Ogea | owo- | | | Z'graggen (1980) | arm |
| 16194 | Odoodee (Kalamo Dialect) | di | arm | | Shaw (1986) | arm |
| 16294 | Odoodee (Hesif Dialect) | de | arm | | Shaw (1986) | arm |
| 160351 | Numanggang | kafɔŋ | | | McElhanon and Voorhoeve (1970) | arm |
| 160332 | Nukna (Hamelengan Dialect) | kɛt 2 | | | McElhanon and Voorhoeve (1970) | arm |
| 160331 | Nukna | kɛt 2 | | | McElhanon and Voorhoeve (1970) | arm |
| 160355 | Nuk | ki | | | McElhanon and Voorhoeve (1970) | arm |
| 955 | Northeast Kiwai (Urama Dialect) | tu | arm | | Wurm (1973) | arm |
| 2939 | Northeast Kiwai (Gope Dialect) | tuhu | arm | | Wurm (1973) | arm |
| 31432 | Northeast Kiwai (Gibaio Dialect) | tu'ú | arm | | Wurm (1973) | arm |
| 17244 | Northeast Kiwai (Arigibi Dialect) | ʌ'dío | arm | | Wurm (1973) | arm |
| 160361 | Nomu | mɛtɛ | | | McElhanon and Voorhoeve (1970) | arm |
| 120716 | Nobonob | ebe- | | | Z'graggen (1980) | arm |
| 243461 | Ningil | fe:k | | | Laycock (1968) | |
| 160275 | Ninggerum | tani | | | McElhanon and Voorhoeve (1970) | arm |
| 20828 | Ninggerum | tani | arm | | Voorhoeve (1975) | arm |
| 160349 | Nimi | kir | | | McElhanon and Voorhoeve (1970) | arm |
| 25812 | Nimboran | kie | arm | | Voorhoeve (1975) | arm |
| 20708 | Ngalum | etul | arm | | Voorhoeve (1975) | arm |
| 160325 | Ngaing | ati | | | McElhanon and Voorhoeve (1970) | arm |
| 191225 | Nend | uman(aka) | | | Z'graggen (1980) | arm |
| 160326 | Neko | ati | | | McElhanon and Voorhoeve (1970) | arm |
| 160327 | Nekgini | ati | | | McElhanon and Voorhoeve (1970) | arm |
| 160354 | Nek | kʌi | | | McElhanon and Voorhoeve (1970) | arm |
| 20384 | Ndom | ta:n | arm | | Voorhoeve (1975) | arm |
| 160338 | Nankina | kʌsit | | | McElhanon and Voorhoeve (1970) | arm |
| 243492 | Namia | larə | | | Laycock (1968) | |
| 23466 | Nalca | seg | arm | | Voorhoeve (1975) | arm |
| 120702 | Nake | ivu- | | | Z'graggen (1980) | arm |
| 160352 | Nakame | kafaŋ | | | McElhanon and Voorhoeve (1970) | arm |
| 213972 | Nakai | ˈʔutu | | | Hughes (2009) | |
| 26092 | Nafri | mə | arm | | Voorhoeve (1975) | arm |
| 243468 | Nabi | tat | | | Laycock (1968) | |
| 160371 | Nabak | bet | | | McElhanon and Voorhoeve (1970) | arm |
| 160274 | Muyu, South | ben | | | McElhanon and Voorhoeve (1970) | arm |
| 20908 | Muyu, South | mben | arm | | Voorhoeve (1975) | arm |
| 20868 | Muyu, North | tiniŋguŋ | arm | | Voorhoeve (1975) | arm |
| 160273 | Muyu, North | tiniŋgung | | | McElhanon and Voorhoeve (1970) | arm |
| 140023 | Musar | embe | | | Z'graggen (1980) | arm |
| 191227 | Musak | kumoβ | | | Z'graggen (1980) | arm |
| 120699 | Murupi | ava | | | Z'graggen (1980) | arm |
| 160322 | Muratayak | kərʌ | | | McElhanon and Voorhoeve (1970) | arm |
| 120688 | Munit | barʌ- | | | Z'graggen (1980) | arm |
| 160357 | Mungkip | kafuŋ | | | McElhanon and Voorhoeve (1970) | arm |
| 24966 | Munggui | bara | arm | | Voorhoeve (1975) | arm |
| 191218 | Mum | kuma | | | Z'graggen (1980) | arm |
