| 32342 | Morawa | goba | | | SIL (1973) | |
| 6285 | Moni (Kemandoga Dialect) | dabe | | | Larson & Larson (1972) | |
| 154923 | Momare | beli | | | McElhanon and Voorhoeve (1970) | tongue |
| 154924 | Momare | bori | | | McElhanon and Voorhoeve (1970) | tongue |
| 29615 | Molof | ai | | | Voorhoeve (1971) | |
| 139763 | Moere | nawɛʔ | | | Z'graggen (1980) | (tongue) |
| 243429 | Minidien | ləhe | | | Laycock (1968) | |
| 3037 | Minanibai | goda | | | Franklin (1973) | |
| 176747 | Migum | muni | | | Z'graggen (1980) | tongue |
| 154922 | Migabac | belu | | | McElhanon and Voorhoeve (1970) | tongue |
| 218242 | Migabac | belu | | | SIL (1975) | |
| 139760 | Miani | -apita | | | Z'graggen (1980) | (tongue) |
| 196692 | Mian | hǎaŋ | | | Loughnane and Fedden (2011) | |
| 91512 | Mesem | nambalaŋ- | (its) tongue | | McElhanon (1967) | (its) tongue |
| 154913 | Mesem | nambalaŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 4768 | Menya | tewa | | | Lloyd (1973) | |
| 243449 | Mende | tarple | | | Laycock (1968) | |
| 240 | Mena | kumɛn | | | Franklin (1973) | |
| 243440 | Mehek | tawul | | | Laycock (1968) | |
| 236780 | Mbore | mim | | | Foley (2005) | |
| 76255 | Mbilua (Ndovele Dialect) | leño | tongue | | Tryon & Hackman (1983) | |
| 76642 | Mbilua | leño | tongue | | Tryon & Hackman (1983) | |
| 76720 | Mbaniata (Lokuru Dialect) | ānl | tongue | | Tryon & Hackman (1983) | |
| 77015 | Mbaniata | āni | tongue | | Tryon & Hackman (1983) | |
| 77796 | Maybrat | hreha | | | Dol (2007) | |
| 120424 | Mawan | nimaru- | | | Z'graggen (1980) | tongue |
| 139765 | Mawak | nʌwiʌk | | | Z'graggen (1980) | (tongue) |
| 139761 | Mauwake | omaᵬia | | | Z'graggen (1980) | (tongue) |
| 120426 | Matepi | nimʌru- | | | Z'graggen (1980) | tongue |
| 257617 | Maria | aˈhie | | | Dutton (1970) | tongue |
| 257615 | Maria (Uderi Dialect) | aˈtie | | | Dutton (1970) | tongue |
| 257613 | Maria (Maranomu Dialect) | aˈhie | | | Dutton (1970) | tongue |
| 257610 | Maria (Maiagolo Dialect) | aˈhie | | | Dutton (1970) | tongue |
| 257611 | Maria (Maiagolo Dialect) | aˈfie | | | Dutton (1970) | tongue |
| 236781 | Marangis | mi | | | Foley (2005) | |
| 154930 | Mape (West Dialect) | namaŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 154929 | Mape (Naga Dialect) | namaŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 154931 | Mape (East Dialect) | namaŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 91518 | Mape | erâŋ- | (its) tongue | | McElhanon (1967) | (its) tongue |
| 29529 | Manem | mte | | | Voorhoeve (1971) | |
| 154835 | Mandobo Atas | oŋgat | | | McElhanon and Voorhoeve (1970) | tongue |
| 201395 | Mandobo Atas | ogɑt | | | Voorhoeve (2000) | |
| 237392 | Manambu | tɨkalɨr | | | Foley (2005) | |
| 154889 | Ma Manda | membem | | | McElhanon and Voorhoeve (1970) | tongue |
| 154884 | Mamaa | mimbeaŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 233223 | Mali (Makunga Dialect) | aǥulbiŋka | | | SIL (1985) | |
| 233121 | Mali (Arambum Dialect) | ǥɔbɩnga | | | SIL (1985) | |
| 176767 | Male | moin | | | Z'graggen (1980) | tongue |
| 139753 | Malas | imbitɛl | | | Z'graggen (1980) | (tongue) |
| 139757 | Mala | medulʌk | | | Z'graggen (1980) | (tongue) |
