| 257605 | Motu | ite- | | | Dutton (1970) | tooth |
| 34683 | Mpur (Arfu Dialect) | èbir | | | Miedema & Welling (1985) | |
| 34723 | Mpur (Kebar Dialect) | bir | | | Miedema & Welling (1985) | |
| 20297 | Mpur | ibuir | | | Voorhoeve (1975) | |
| 16812 | Mpur | bir | | | Miedema & Welling (1985) | |
| 27414 | Mubami | bɛhɛ | | | Reesink (1976) | |
| 3353 | Mubami | behe | | | Franklin (1973) | |
| 257606 | Mulaha | waina (2?) | | | Dutton (1970) | tooth |
| 83317 | Mum | mɨka | | x | Daniels (2010) | |
| 191100 | Mum | mʉka gur̃s | | | Z'graggen (1980) | tooth |
| 24999 | Munggui | tesina | | | Voorhoeve (1975) | |
| 157370 | Mungkip | ma | | | McElhanon and Voorhoeve (1970) | tooth |
| 120466 | Munit | ai- | | | Z'graggen (1980) | tooth |
| 157332 | Muratayak | mi | | | McElhanon and Voorhoeve (1970) | tooth |
| 240555 | Murik (Karau Dialect) | ˈiasɩr̃apʰ | | | Abbott (1985) | |
| 240659 | Murik (Wagamut Dialect) | ˈiasər̃apʰ | | | Abbott (1985) | |
| 235419 | Murik | asarap | | | Foley (2005) | |
| 7851 | Murik | asarap | | | Foley (1986) | |
| 236089 | Murik | asarap | | | Foley (2005) | |
| 120478 | Murupi | aʔa- | | | Z'graggen (1980) | tooth |
| 191110 | Musak | ma:kɨ | | | Z'graggen (1980) | tooth |
| 139821 | Musar | henaŋ | | | Z'graggen (1980) | tooth |
| 20901 | Muyu, North | niŋgambo | | | Voorhoeve (1975) | |
| 157310 | Muyu, North | niŋambo | | | McElhanon and Voorhoeve (1970) | tooth |
| 157311 | Muyu, South | niyikondo | | | McElhanon and Voorhoeve (1970) | tooth |
| 20941 | Muyu, South | niyi kondo | | | Voorhoeve (1975) | |
| 157385 | Nabak | dzɛt | | | McElhanon and Voorhoeve (1970) | tooth |
| 91537 | Nabak | dzet- | (its) tooth | | McElhanon (1967) | (its) tooth |
| 243387 | Nabi | naf | | | Laycock (1968) | |
| 26125 | Nafri | cə | | | Voorhoeve (1975) | |
| 213970 | Nakai | ˈniŋgi | | | Hughes (2009) | |
| 157367 | Nakame | maŋ | | | McElhanon and Voorhoeve (1970) | tooth |
| 120480 | Nake | au- | | | Z'graggen (1980) | tooth |
| 23499 | Nalca | si | | | Voorhoeve (1975) | |
| 237673 | Namia | pinarɨ | | | Foley (2005) | |
| 243411 | Namia | pinarə | | | Laycock (1968) | |
| 157353 | Nankina | mipm | | | McElhanon and Voorhoeve (1970) | tooth |
| 19491 | Narau | sebekai | | | Voorhoeve (1975) | |
| 20417 | Ndom | trex | | | Voorhoeve (1975) | |
| 38748 | Nedebang | n''yusiŋb'αgα | | | Stokhof (1975) | |
| 157368 | Nek | mɛ | | | McElhanon and Voorhoeve (1970) | tooth |
| 157337 | Nekgini | masi | | | McElhanon and Voorhoeve (1970) | tooth |
| 157336 | Neko | maati | | | McElhanon and Voorhoeve (1970) | tooth |
| 83315 | Nend | kar | mouth | | Daniels (2010) | |
| 191107 | Nend | zonda | | | Z'graggen (1980) | tooth |
| 191108 | Nend | ampʌr | | | Z'graggen (1980) | tooth |
| 157335 | Ngaing | mati | | | McElhanon and Voorhoeve (1970) | tooth |
| 237379 | Ngala | nɨmpɨy | | | Foley (2005) | |
| 20741 | Ngalum | niŋil | | | Voorhoeve (1975) | |
| 25845 | Nimboran | hriŋ-douŋ | | | Voorhoeve (1975) | |
