| 125516 | Nobonob | wug | | | Z'graggen (1980) | heavy |
| 193704 | Nend | kɨr̃ | | | Z'graggen (1980) | heavy |
| 200187 | Nek (Goambot Dialect) | mɨlɑp | | | Retsema et al. (2009) | |
| 125504 | Nake | ʔu:g | | | Z'graggen (1980) | heavy |
| 198972 | Nakame (Wasin Dialect) | mɑlɑpmuŋ | | | Retsema et al. (2009) | |
| 198854 | Nakame (Sokan Dialect) | mɨlapm̩ | | | Retsema et al. (2009) | |
| 198733 | Nakame (Sikalan Dialect) | mlapm | | | Retsema et al. (2009) | |
| 199218 | Nakame (Popof Dialect) | mulɑ·pmū | | | Retsema et al. (2009) | |
| 199607 | Nakame (Munguleng Dialect) | mulɑpmūŋ | | | Retsema et al. (2009) | |
| 199724 | Nakame (Gufin Dialect) | mulɑpmuŋ | | | Retsema et al. (2009) | |
| 199091 | Nakame (Dzenzen Dialect) | mɑlɑpmūŋ | | | Retsema et al. (2009) | |
| 144334 | Musar | pi:nan | | | Z'graggen (1980) | heavy |
| 193706 | Musak | pumi | | | Z'graggen (1980) | heavy |
| 125502 | Murupi | ʔua | | | Z'graggen (1980) | heavy |
| 240711 | Murik (Wagamut Dialect) | ˈdipʰatʰo | | | Abbott (1985) | |
| 240614 | Murik (Karau Dialect) | ˈdipʰatʰo | | | Abbott (1985) | |
| 125491 | Munit | uʔʌru | | | Z'graggen (1980) | heavy |
| 198615 | Mungkip | mulabum | | | Retsema et al. (2009) | |
| 193697 | Mum | pumᵘ | | | Z'graggen (1980) | heavy |
| 83411 | Mum | pɨm | | | Daniels (2010) | |
| 15036 | Mountain Koiari | isu|a | heavy | | Dutton (2010) | |
| 259862 | Motu | metau- | | | Dutton (1970) | heavy |
| 125505 | Mosimo | kuomu | | | Z'graggen (1980) | heavy |
| 193701 | Moresada | wit- | | | Z'graggen (1980) | heavy |
| 144330 | Moere | pineʔ | | | Z'graggen (1980) | heavy |
| 218348 | Migabac | umacine | | | SIL (1975) | |
| 144327 | Miani | ubi | | | Z'graggen (1980) | heavy |
| 196675 | Mian | ilum | | | Loughnane and Fedden (2011) | |
| 76421 | Mbilua (Ndovele Dialect) | nduki | heavy | | Tryon & Hackman (1983) | |
| 76532 | Mbilua | nduki | heavy | | Tryon & Hackman (1983) | |
| 76669 | Mbaniata (Lokuru Dialect) | momota | heavy | | Tryon & Hackman (1983) | |
| 77054 | Mbaniata | momota | heavy | | Tryon & Hackman (1983) | |
| 77877 | Maybrat | samuoh | | | Dol (2007) | |
| 125512 | Mawan | u: | | | Z'graggen (1980) | heavy |
| 144332 | Mawak | pinʌnt | | | Z'graggen (1980) | heavy |
| 144328 | Mauwake | ubi | | | Z'graggen (1980) | heavy |
| 125514 | Matepi | uwahau | | | Z'graggen (1980) | heavy |
| 259858 | Maria (Maranomu Dialect) | hoeˈre- | | | Dutton (1970) | heavy |
| 259856 | Maria (Maiagolo Dialect) | hoere- | | | Dutton (1970) | heavy |
| 29495 | Manem | kəne | | | Voorhoeve (1971) | |
| 231500 | Mandobo Atas (Kwem Dialect) | kaakön | | | Healey (1970) | |
| 231316 | Mandobo Atas | kaakön | | | Healey (1970) | |
| 233285 | Mali (Makunga Dialect) | amᵊřʌ | | | SIL (1985) | |
| 233171 | Mali (Arambum Dialect) | mᵊřʌn | | | SIL (1985) | |
| 181406 | Male | kuliɣ- | | | Z'graggen (1980) | heavy |
| 144320 | Malas | bi:nat | | | Z'graggen (1980) | heavy |
| 144324 | Mala | ubi | | | Z'graggen (1980) | heavy |
| 221306 | Maiwa | ip'nawa | | | SIL (1973) | |
| 86776 | Mailu (Island Dialect) | urumu | | | Thomson (1975) | |
| 86502 | Mailu (Ilai Dialect) | urumu | | | Thomson (1975) | |
