| 23500 | Nalca | khal | | | Voorhoeve (1975) | |
| 156441 | Nalca | kal | | | McElhanon and Voorhoeve (1970) | tree |
| 123153 | Nake | aim | | | Z'graggen (1980) | tree |
| 198998 | Nakame (Wasin Dialect) | beŋ | | | Retsema et al. (2009) | |
| 199244 | Nakame (Popof Dialect) | bɛm | | | Retsema et al. (2009) | |
| 199639 | Nakame (Munguleng Dialect) | bɛm | | | Retsema et al. (2009) | |
| 199745 | Nakame (Gufin Dialect) | bem | | | Retsema et al. (2009) | |
| 199117 | Nakame (Dzenzen Dialect) | bɛŋ | | | Retsema et al. (2009) | |
| 214016 | Nakai | ˈʔɑ ɴɢɔɴ | | | Hughes (2009) | |
| 197831 | Nagatiman | ti: | | | Conrad and Dye (1975) | |
| 26126 | Nafri | ono | | | Voorhoeve (1975) | |
| 244167 | Nabi | nip | | | Laycock (1968) | |
| 91369 | Nabak | təp | tree | | McElhanon (1967) | tree |
| 20942 | Muyu, South | at | | | Voorhoeve (1975) | |
| 20902 | Muyu, North | at | | | Voorhoeve (1975) | |
| 142225 | Musar | nʌ | | | Z'graggen (1980) | tree |
| 192480 | Musak | tar | | | Z'graggen (1980) | tree |
| 123151 | Murupi | aima | | | Z'graggen (1980) | tree |
| 7861 | Murik | yarar | | | Foley (1986) | |
| 240670 | Murik (Wagamut Dialect) | ˈialal | | | Abbott (1985) | |
| 240564 | Murik (Karau Dialect) | ˈiařař | | | Abbott (1985) | |
| 123140 | Munit | hã | | | Z'graggen (1980) | tree |
| 198642 | Mungkip | bɛm | | | Retsema et al. (2009) | |
| 25000 | Munggui | ai | | | Voorhoeve (1975) | |
| 192471 | Mum | agu | | | Z'graggen (1980) | tree |
| 3383 | Mubami | te | | | Franklin (1973) | |
| 27454 | Mubami | dɛ | | | Reesink (1976) | |
| 20298 | Mpur | ni | | | Voorhoeve (1975) | |
| 16813 | Mpur | ni | | | Miedema & Welling (1985) | |
| 34724 | Mpur (Kebar Dialect) | perau | | | Miedema & Welling (1985) | |
| 34684 | Mpur (Arfu Dialect) | perahu | | | Miedema & Welling (1985) | |
| 14999 | Mountain Koiari | idi | tree | | Dutton (2010) | |
| 258340 | Motu | au | | | Dutton (1970) | tree |
| 34644 | Moskona (Merdey Dialect) | okow | | | Miedema & Welling (1985) | |
| 19086 | Moskona | mergowoho | | | Voorhoeve (1975) | |
| 123154 | Mosimo | kaimo | | | Z'graggen (1980) | tree |
| 21496 | Morori | kwi | | | Voorhoeve (1975) | |
| 3485 | Morigi | noʔa | | | Wurm (1973) | |
| 192475 | Moresada | arəp | | | Z'graggen (1980) | tree |
| 32353 | Morawa | ana | | | SIL (1973) | |
| 25200 | Mor (Austronesian) | kaʔuat | | | Voorhoeve (1975) | |
| 20178 | Moraid | pelu | | | Voorhoeve (1975) | |
| 21817 | Mor | wara | | | Voorhoeve (1975) | |
| 7313 | Moni (Kemandoga Dialect) | bo | | | Larson & Larson (1972) | |
| 22378 | Moni | bo | | | Voorhoeve (1975) | |
| 21536 | Momuna | kwo | | | Voorhoeve (1975) | |
| 157181 | Mombum | tu | | | McElhanon and Voorhoeve (1970) | tree |
| 21142 | Mombum | tu | | | Voorhoeve (1975) | |
| 29617 | Molof | woar | | | Voorhoeve (1971) | |
| 19652 | Molof | woar | | | Voorhoeve (1975) | |
