| 199820 | Nuk (Tamben Dialect) | teɾɑk | | | Retsema et al. (2009) | |
| 160175 | Nuk | terak | | | McElhanon and Voorhoeve (1970) | road |
| 160182 | Nomu | kiop | | | McElhanon and Voorhoeve (1970) | road |
| 246320 | Nimo | áři | | | SIL (1963) | |
| 198246 | Nimo | ařiI | | | Conrad and Dye (1975) | |
| 160170 | Nimi | kadit | | | McElhanon and Voorhoeve (1970) | road |
| 160139 | Ngaing | bigu | | | McElhanon and Voorhoeve (1970) | road |
| 160140 | Neko | arapuk | | | McElhanon and Voorhoeve (1970) | road |
| 160141 | Nekgini | sinʌŋ | | | McElhanon and Voorhoeve (1970) | road |
| 200197 | Nek (Goambot Dialect) | telɑk | | | Retsema et al. (2009) | |
| 160174 | Nek | telak | | | McElhanon and Voorhoeve (1970) | road |
| 38833 | Nedebang | y'iyα | path | | Stokhof (1975) | |
| 38848 | Nedebang | tɔɔr | road | | Stokhof (1975) | |
| 160158 | Nankina | tʌƀiƀi | | | McElhanon and Voorhoeve (1970) | road |
| 198982 | Nakame (Wasin Dialect) | teleəq | | | Retsema et al. (2009) | |
| 198864 | Nakame (Sokan Dialect) | teləq | | | Retsema et al. (2009) | |
| 198743 | Nakame (Sikalan Dialect) | tɛlɛak | | | Retsema et al. (2009) | |
| 199228 | Nakame (Popof Dialect) | teləq | | | Retsema et al. (2009) | |
| 199620 | Nakame (Munguleng Dialect) | te·liq | | | Retsema et al. (2009) | |
| 199732 | Nakame (Gufin Dialect) | te:lik | | | Retsema et al. (2009) | |
| 199101 | Nakame (Dzenzen Dialect) | teleq | | | Retsema et al. (2009) | |
| 160173 | Nakame | terak | | | McElhanon and Voorhoeve (1970) | road |
| 214069 | Nakai | dlˈl̪ip | | | Hughes (2009) | |
| 197810 | Nagatiman | ařʌgɛʔ | | | Conrad and Dye (1975) | |
| 160193 | Nabak | set | | | McElhanon and Voorhoeve (1970) | road |
| 91215 | Nabak | set | road | | McElhanon (1967) | road |
| 160114 | Muyu, North | yontom | | | McElhanon and Voorhoeve (1970) | road |
| 240651 | Murik (Wagamut Dialect) | ˈiagabor̃ | | | Abbott (1985) | |
| 240547 | Murik (Karau Dialect) | ˈiagabol | | | Abbott (1985) | |
| 160136 | Muratayak | yam | | | McElhanon and Voorhoeve (1970) | road |
| 198625 | Mungkip | tɛrɛpmēŋ | | | Retsema et al. (2009) | |
| 160176 | Mungkip | tɛlɛ | | | McElhanon and Voorhoeve (1970) | road |
| 83041 | Mum | kuᵐbɨ | | | Daniels (2010) | |
| 27453 | Mubami | idi | path | | Reesink (1976) | path |
| 15452 | Mountain Koiari | huma|ha | path, road | | Dutton (2010) | |
| 32334 | Morawa | nara | | | SIL (1973) | |
| 7307 | Moni (Kemandoga Dialect) | kejako | | | Larson & Larson (1972) | |
| 29597 | Molof | mef | road/path | | Voorhoeve (1971) | road/path |
| 218234 | Migabac | jefe | | | SIL (1975) | |
| 160196 | Migabac | yefe | | | McElhanon and Voorhoeve (1970) | road |
| 160115 | Mian | reip | | | McElhanon and Voorhoeve (1970) | road |
| 160194 | Mesem | kʌtʌrʌm | | | McElhanon and Voorhoeve (1970) | road |
| 91204 | Mesem | kə | road | | McElhanon (1967) | road |
| 76340 | Mbilua (Ndovele Dialect) | keve | road | | Tryon & Hackman (1983) | |
| 76518 | Mbilua | keve | road | | Tryon & Hackman (1983) | |
| 76787 | Mbaniata (Lokuru Dialect) | e | road | | Tryon & Hackman (1983) | |
| 76875 | Mbaniata | e | road | | Tryon & Hackman (1983) | |
| 77852 | Maybrat | iso | | | Dol (2007) | |
| 160132 | Marind (Gawir Dialect) | isas | | | McElhanon and Voorhoeve (1970) | road |
| 160198 | Mape (Naga Dialect) | yape | | | McElhanon and Voorhoeve (1970) | road |
