| 142211 | Malas | mumdu | | | Z'graggen (1980) | tree |
| 142215 | Mala | nanʌm | | | Z'graggen (1980) | tree |
| 157177 | Maklew | doyo | | | McElhanon and Voorhoeve (1970) | tree |
| 21216 | Maklew | doyo | | | Voorhoeve (1975) | |
| 56158 | Makasae | ete | | | Stokhof (1975) | |
| 56156 | Makasae | 'atɛ (O) ada | | | Stokhof (1975) | |
| 56157 | Makasae | ara | | | Stokhof (1975) | |
| 221224 | Maiwa | i | | | SIL (1973) | |
| 217822 | Maiwa | ioma | Daga - oma | | SIL (1967) | |
| 21576 | Mairasi | iwo | | | Voorhoeve (1975) | |
| 86655 | Mailu (Island Dialect) | ana | | | Thomson (1975) | |
| 86381 | Mailu (Ilai Dialect) | ana | | | Thomson (1975) | |
| 87751 | Mailu (Geagea Dialect) | ana | | | Thomson (1975) | |
| 87203 | Mailu (Domara Dialect) | ana | | | Thomson (1975) | |
| 88025 | Mailu (Delebai Dialect) | ana | | | Thomson (1975) | |
| 88299 | Mailu (Darava Dialect) | ana | | | Thomson (1975) | |
| 86929 | Mailu (Borebo Dialect) | ana | | | Thomson (1975) | |
| 87477 | Mailu (Baibara Dialect) | ana | | | Thomson (1975) | |
| 86107 | Mailu (Asiaoro Dialect) | ana | | | Thomson (1975) | |
| 20258 | Mai Brat | ara | | | Voorhoeve (1975) | |
| 142217 | Maia (Saki Dialect) | ŋanam | | | Z'graggen (1980) | tree |
| 142216 | Maia (Pila Dialect) | ŋanam | | | Z'graggen (1980) | tree |
| 256993 | Magɨ | te | | | Daniels (2016) | |
| 157182 | Madi | da | | | McElhanon and Voorhoeve (1970) | tree |
| 179255 | Lemio | a:r̃ | | | Z'graggen (1980) | tree |
| 163822 | Lembena (Yariba Dialect) | 'it̮ɕa | | | Davies and Comrie (1985) | tree |
| 163821 | Lembena (Yariba Dialect) | 'isa | | | Davies and Comrie (1985) | tree |
| 163813 | Lembena (Maibi Dialect) | 'isa | | | Davies and Comrie (1985) | tree |
| 163812 | Lembena | isa | | | Davies and Comrie (1985) | tree |
| 22991 | Lau | uii | | | Voorhoeve (1975) | |
| 163814 | Kyenele (Miyak Dialect) | mï | | | Davies and Comrie (1985) | tree |
| 163807 | Kyenele (Kyaimbarang Dialect) | mu | | | Davies and Comrie (1985) | tree |
| 163808 | Kyaka | isa | | | Davies and Comrie (1985) | tree |
| 237744 | Kwoma | me | | | Foley (2005) | |
| 244189 | Kwoma | me | | | Laycock (1968) | |
| 22908 | Kwesten | tim | | | Voorhoeve (1975) | |
| 22916 | Kwesten | tibur | | | Voorhoeve (1975) | |
| 23112 | Kwerisa | u | | | Voorhoeve (1975) | |
| 22627 | Kwerba (Airmati Dialect) | idedes | | | Voorhoeve (1975) | |
| 22550 | Kwerba | icə | | | Voorhoeve (1975) | |
| 22543 | Kwerba | ec | | | Voorhoeve (1975) | |
| 24958 | Kurudu | ai-bro | | | Voorhoeve (1975) | |
| 30539 | Kuni-Boazi | tɑi | | | Voorhoeve (1970) | |
| 21977 | Kuni-Boazi | geynam | | | Voorhoeve (1975) | |
| 30538 | Kuni-Boazi | tae | | | Voorhoeve (1970) | |
| 32578 | Kuman | endi | | | Salisbury (1956) | |
| 83506 | Kulsab | tar | | | Daniels (2010) | |
| 36430 | Kula | as'akkα | | | Stokhof (1975) | |
| 37718 | Kui (Kiramang Dialect) | att'ey | | | Stokhof (1975) | |
| 36196 | Kui | αt'ey | | | Stokhof (1975) | |
