| 316 | Mena | haiɛ | | | Franklin (1973) | |
| 25887 | Mekwei | naman | | | Voorhoeve (1975) | |
| 244637 | Mehek | lisifu | | | Laycock (1968) | |
| 236692 | Mbore | mbuniŋ | | | Foley (2005) | |
| 76265 | Mbilua (Ndovele Dialect) | omuŋga | two | | Tryon & Hackman (1983) | |
| 76458 | Mbilua | ɔmuŋga | two | | Tryon & Hackman (1983) | |
| 76727 | Mbaniata (Lokuru Dialect) | ēri | | | Tryon & Hackman (1983) | |
| 77035 | Mbaniata | ēri | | | Tryon & Hackman (1983) | |
| 77826 | Maybrat | eok | | | Dol (2007) | |
| 77827 | Maybrat | ewok | | | Dol (2007) | |
| 260804 | Ma'ya | roe | | | Fabritius (1855) | 2 |
| 24211 | Ma'ya | lu | | | Voorhoeve (1975) | |
| 25767 | Mawes | yakenew | | | Voorhoeve (1975) | |
| 125041 | Mawan | kwara:ra | | | Z'graggen (1980) | two |
| 143910 | Mawak | irɛb | | | Z'graggen (1980) | (two) |
| 143906 | Mauwake | ɛrup | | | Z'graggen (1980) | (two) |
| 125043 | Matepi | werar | | | Z'graggen (1980) | two |
| 21938 | Marind, Bian | inah | | | Voorhoeve (1975) | |
| 22339 | Marind | inah | | | Voorhoeve (1975) | |
| 24879 | Marau | ko-iru | | | Voorhoeve (1975) | |
| 236693 | Marangis | mbwoini | | | Foley (2005) | |
| 90566 | Mape | yoyokak | two | | McElhanon (1967) | two |
| 261009 | Mansim | jan | | | Fabritius (1855) | 2 |
| 20459 | Manikion | huay | | | Voorhoeve (1975) | |
| 19207 | Manem | sampaŋ | | | Voorhoeve (1975) | |
| 29532 | Manem | sampaŋ | | | Voorhoeve (1971) | |
| 201478 | Mandobo Atas (Yonggom Dialect) | irumo | | | Voorhoeve (2000) | |
| 231585 | Mandobo Atas (Kwem Dialect) | rumo | | | Healey (1970) | |
| 201396 | Mandobo Atas | rumo | | | Voorhoeve (2000) | |
| 231402 | Mandobo Atas | rumo | | | Healey (1970) | |
| 25567 | Mandobo Atas | rumo | | | Voorhoeve (1975) | |
| 22829 | Mander | nauwet | | | Voorhoeve (1975) | |
| 233243 | Mali (Makunga Dialect) | aᵘⁿdom | | | SIL (1985) | |
| 233139 | Mali (Arambum Dialect) | udion | | | SIL (1985) | |
| 180963 | Male | liko | | | Z'graggen (1980) | two |
| 143898 | Malas | arɛr | | | Z'graggen (1980) | (two) |
| 143902 | Mala | ŋier̃ | | | Z'graggen (1980) | (two) |
| 21217 | Maklew | inage | | | Voorhoeve (1975) | |
| 217833 | Maiwa | dúam | | | SIL (1967) | |
| 221235 | Maiwa | du:ʌm | | | SIL (1973) | |
| 21577 | Mairasi | amoi | | | Voorhoeve (1975) | |
| 86812 | Mailu (Island Dialect) | ʔava | | | Thomson (1975) | |
| 86538 | Mailu (Ilai Dialect) | ʔava | | | Thomson (1975) | |
| 87908 | Mailu (Geagea Dialect) | ʔava | | | Thomson (1975) | |
| 87360 | Mailu (Domara Dialect) | ʔava | | | Thomson (1975) | |
| 88182 | Mailu (Delebai Dialect) | ʔava | | | Thomson (1975) | |
| 88456 | Mailu (Darava Dialect) | ʔava | | | Thomson (1975) | |
| 87086 | Mailu (Borebo Dialect) | ʔava | | | Thomson (1975) | |
| 87634 | Mailu (Baibara Dialect) | ʔava | | | Thomson (1975) | |
| 86264 | Mailu (Asiaoro Dialect) | ʔava | | | Thomson (1975) | |
