| 257617 | Maria | aˈhie | | | Dutton (1970) | tongue |
| 120426 | Matepi | nimʌru- | | | Z'graggen (1980) | tongue |
| 139761 | Mauwake | omaᵬia | | | Z'graggen (1980) | (tongue) |
| 139765 | Mawak | nʌwiʌk | | | Z'graggen (1980) | (tongue) |
| 120424 | Mawan | nimaru- | | | Z'graggen (1980) | tongue |
| 77796 | Maybrat | hreha | | | Dol (2007) | |
| 77015 | Mbaniata | āni | tongue | | Tryon & Hackman (1983) | |
| 76720 | Mbaniata (Lokuru Dialect) | ānl | tongue | | Tryon & Hackman (1983) | |
| 76642 | Mbilua | leño | tongue | | Tryon & Hackman (1983) | |
| 76255 | Mbilua (Ndovele Dialect) | leño | tongue | | Tryon & Hackman (1983) | |
| 236780 | Mbore | mim | | | Foley (2005) | |
| 243440 | Mehek | tawul | | | Laycock (1968) | |
| 240 | Mena | kumɛn | | | Franklin (1973) | |
| 243449 | Mende | tarple | | | Laycock (1968) | |
| 4768 | Menya | tewa | | | Lloyd (1973) | |
| 91512 | Mesem | nambalaŋ- | (its) tongue | | McElhanon (1967) | (its) tongue |
| 154913 | Mesem | nambalaŋ | | | McElhanon and Voorhoeve (1970) | tongue |
| 196692 | Mian | hǎaŋ | | | Loughnane and Fedden (2011) | |
| 139760 | Miani | -apita | | | Z'graggen (1980) | (tongue) |
| 218242 | Migabac | belu | | | SIL (1975) | |
| 154922 | Migabac | belu | | | McElhanon and Voorhoeve (1970) | tongue |
| 176747 | Migum | muni | | | Z'graggen (1980) | tongue |
| 3037 | Minanibai | goda | | | Franklin (1973) | |
| 243429 | Minidien | ləhe | | | Laycock (1968) | |
| 139763 | Moere | nawɛʔ | | | Z'graggen (1980) | (tongue) |
| 29615 | Molof | ai | | | Voorhoeve (1971) | |
| 154924 | Momare | bori | | | McElhanon and Voorhoeve (1970) | tongue |
| 154923 | Momare | beli | | | McElhanon and Voorhoeve (1970) | tongue |
| 6285 | Moni (Kemandoga Dialect) | dabe | | | Larson & Larson (1972) | |
| 32342 | Morawa | goba | | | SIL (1973) | |
| 191072 | Moresada | -mer̃ək | | | Z'graggen (1980) | tongue |
| 3456 | Morigi | wototorope | | | Wurm (1973) | |
| 120417 | Mosimo | melʌl- | | | Z'graggen (1980) | tongue |
| 257619 | Motu | maia- | | | Dutton (1970) | tongue |
| 15667 | Mountain Koiari | neme | tongue | | Dutton (2010) | |
| 3354 | Mubami | oda | | | Franklin (1973) | |
| 27415 | Mubami | ɔda | | | Reesink (1976) | |
| 257620 | Mulaha | bebura | | | Dutton (1970) | tongue |
| 191068 | Mum | mir̃ | | | Z'graggen (1980) | tongue |
| 154894 | Mungkip | mabim | | | McElhanon and Voorhoeve (1970) | tongue |
| 198578 | Mungkip | mabɛm | | | Retsema et al. (2009) | |
| 120403 | Munit | beria- | | | Z'graggen (1980) | tongue |
| 154855 | Muratayak | minŋa | | | McElhanon and Voorhoeve (1970) | tongue |
| 240554 | Murik (Karau Dialect) | ˈmbɛneŋ | | | Abbott (1985) | |
| 240658 | Murik (Wagamut Dialect) | ˈmbɩneŋ | | | Abbott (1985) | |
| 235440 | Murik | menɨŋ | | | Foley (2005) | |
| 236110 | Murik | menɨŋ | | | Foley (2005) | |
| 7854 | Murik | menɨŋ | | | Foley (1986) | |
| 120414 | Murupi | nimaru- | | | Z'graggen (1980) | tongue |
| 191077 | Musak | sagui | | | Z'graggen (1980) | tongue |
