| 306 | Mena | nɛnɛne | | | Franklin (1973) | |
| 4834 | Menya | yavqa | | | Lloyd (1973) | |
| 157948 | Mesem | kɔt | | | McElhanon and Voorhoeve (1970) | name |
| 91162 | Mesem | kot- | (its) name | | McElhanon (1967) | (its) name |
| 34350 | Meyah (Akrin Dialect) | dufòkah | | | Miedema & Welling (1985) | |
| 34390 | Meyah (Anason Dialect) | iwuok | | | Miedema & Welling (1985) | |
| 34511 | Meyah (Etskebi Dialect) | bou(y)ok | | | Miedema & Welling (1985) | |
| 34551 | Meyah (Miun Dialect) | ifap | | | Miedema & Welling (1985) | |
| 34591 | Meyah (Mumbrani Dialect) | mufaka | | | Miedema & Welling (1985) | |
| 20366 | Meyah | mofoka | | | Voorhoeve (1975) | |
| 140894 | Miani | -inum | | | Z'graggen (1980) | (name) |
| 218300 | Migabac | ʒoŋo | | | SIL (1975) | |
| 157950 | Migabac | dzoŋɔ | | | McElhanon and Voorhoeve (1970) | name |
| 177893 | Migum | ño | | | Z'graggen (1980) | name |
| 3103 | Minanibai | digɔ | | | Franklin (1973) | |
| 25954 | Mlap | sü | | | Voorhoeve (1975) | |
| 140897 | Moere | onim | | | Z'graggen (1980) | (name) |
| 20125 | Moi | kedi | | | Voorhoeve (1975) | |
| 19640 | Molof | ti | | | Voorhoeve (1975) | |
| 29591 | Molof | ti | | | Voorhoeve (1971) | |
| 157951 | Momare | doŋe | | | McElhanon and Voorhoeve (1970) | name |
| 157888 | Mombum | ur | | | McElhanon and Voorhoeve (1970) | name |
| 21130 | Mombum | ur | | | Voorhoeve (1975) | |
| 22366 | Moni | eze | | | Voorhoeve (1975) | |
| 7302 | Moni (Kemandoga Dialect) | eje | | | Larson & Larson (1972) | |
| 21805 | Mor | inagenena | | | Voorhoeve (1975) | |
| 20166 | Moraid | numhamone | | | Voorhoeve (1975) | |
| 25188 | Mor (Austronesian) | natana | | | Voorhoeve (1975) | |
| 191717 | Moresada | -mbep | | | Z'graggen (1980) | name |
| 3522 | Morigi | paena | | | Wurm (1973) | |
| 21484 | Morori | nex | | | Voorhoeve (1975) | |
| 121662 | Mosimo | bina | | | Z'graggen (1980) | name |
| 19075 | Moskona | iwoko | | | Voorhoeve (1975) | |
| 34632 | Moskona (Merdey Dialect) | buoka | | | Miedema & Welling (1985) | |
| 259735 | Motu | lada- | | | Dutton (1970) | [(name)] |
| 15015 | Mountain Koiari | ivi | name | | Dutton (2010) | |
| 34672 | Mpur (Arfu Dialect) | muk | | | Miedema & Welling (1985) | |
| 34712 | Mpur (Kebar Dialect) | emuk | | | Miedema & Welling (1985) | |
| 20286 | Mpur | ewuk | | | Voorhoeve (1975) | |
| 16801 | Mpur | muk | | | Miedema & Welling (1985) | |
| 27494 | Mubami | diǥɔ | | | Reesink (1976) | |
| 3420 | Mubami | dogɔ | | | Franklin (1973) | |
| 259736 | Mulaha | waa anu | | | Dutton (1970) | [(name)] |
| 82831 | Mum | ñiᵐbi | | | Daniels (2010) | |
| 191713 | Mum | nimbi | | | Z'graggen (1980) | name |
| 24988 | Munggui | sano | | | Voorhoeve (1975) | |
| 198599 | Mungkip | buŋām | | | Retsema et al. (2009) | |
| 157933 | Mungkip | wow | | | McElhanon and Voorhoeve (1970) | name |
| 121647 | Munit | beni- | | | Z'graggen (1980) | name |
| 157895 | Muratayak | ʌwʌnum | | | McElhanon and Voorhoeve (1970) | name |
