| 142216 | Maia (Pila Dialect) | ŋanam | | | Z'graggen (1980) | tree |
| 142217 | Maia (Saki Dialect) | ŋanam | | | Z'graggen (1980) | tree |
| 20258 | Mai Brat | ara | | | Voorhoeve (1975) | |
| 86107 | Mailu (Asiaoro Dialect) | ana | | | Thomson (1975) | |
| 87477 | Mailu (Baibara Dialect) | ana | | | Thomson (1975) | |
| 86929 | Mailu (Borebo Dialect) | ana | | | Thomson (1975) | |
| 88299 | Mailu (Darava Dialect) | ana | | | Thomson (1975) | |
| 88025 | Mailu (Delebai Dialect) | ana | | | Thomson (1975) | |
| 87203 | Mailu (Domara Dialect) | ana | | | Thomson (1975) | |
| 87751 | Mailu (Geagea Dialect) | ana | | | Thomson (1975) | |
| 86381 | Mailu (Ilai Dialect) | ana | | | Thomson (1975) | |
| 86655 | Mailu (Island Dialect) | ana | | | Thomson (1975) | |
| 21576 | Mairasi | iwo | | | Voorhoeve (1975) | |
| 221224 | Maiwa | i | | | SIL (1973) | |
| 217822 | Maiwa | ioma | Daga - oma | | SIL (1967) | |
| 56157 | Makasae | ara | | | Stokhof (1975) | |
| 56158 | Makasae | ete | | | Stokhof (1975) | |
| 56156 | Makasae | 'atɛ (O) ada | | | Stokhof (1975) | |
| 21216 | Maklew | doyo | | | Voorhoeve (1975) | |
| 157177 | Maklew | doyo | | | McElhanon and Voorhoeve (1970) | tree |
| 142215 | Mala | nanʌm | | | Z'graggen (1980) | tree |
| 142211 | Malas | mumdu | | | Z'graggen (1980) | tree |
| 179273 | Male | ŋam | | | Z'graggen (1980) | tree |
| 233129 | Mali (Arambum Dialect) | ŋumuŋ | | | SIL (1985) | |
| 233232 | Mali (Makunga Dialect) | amʌŋka | | | SIL (1985) | |
| 156487 | Ma Manda | kadip | | | McElhanon and Voorhoeve (1970) | tree |
| 237427 | Manambu | mɨy | | | Foley (2005) | |
| 83502 | Manat | tat | | | Daniels (2010) | |
| 22828 | Mander | bure | | | Voorhoeve (1975) | |
| 25566 | Mandobo Atas | in | | | Voorhoeve (1975) | |
| 231313 | Mandobo Atas | in | | | Healey (1970) | |
| 231497 | Mandobo Atas (Kwem Dialect) | in | also 'fire' | | Healey (1970) | |
| 19206 | Manem | ti | | | Voorhoeve (1975) | |
| 29531 | Manem | ti | | | Voorhoeve (1971) | |
| 261186 | Manep | mundu | | | Pick (2019) | tree |
| 20458 | Manikion | sako | | | Voorhoeve (1975) | |
| 91364 | Mape | yâk | tree | | McElhanon (1967) | tree |
| 236821 | Marangis | padoŋ | | | Foley (2005) | |
| 258331 | Maria (Maiagolo Dialect) | yabo | | | Dutton (1970) | tree |
| 258332 | Maria (Maiagolo Dialect) | oˈruma | | | Dutton (1970) | tree |
| 258334 | Maria (Maranomu Dialect) | ˈyabo | | | Dutton (1970) | tree |
| 258336 | Maria (Uderi Dialect) | ˈyavo | | | Dutton (1970) | tree |
| 258338 | Maria | ˈyabo | | | Dutton (1970) | tree |
| 22338 | Marind | de: | | | Voorhoeve (1975) | |
| 157174 | Marind (Gawir Dialect) | de | | | McElhanon and Voorhoeve (1970) | tree |
| 21937 | Marind, Bian | de: | | | Voorhoeve (1975) | |
| 123163 | Matepi | ɛs | | | Z'graggen (1980) | tree |
| 142219 | Mauwake | nomɔkwʌ | | | Z'graggen (1980) | tree |
| 142223 | Mawak | nʌ | | | Z'graggen (1980) | tree |
| 123161 | Mawan | ah | | | Z'graggen (1980) | tree |
