| 60040 | Mekens-ICR-LB | i-, s- | | | Galucio (2001) | |
| 60794 | Mekens-ICR-RH | i-, se-, s- | | | Vilacy (2001) | |
| 60410 | Mekens_ICR_TCC | te | | | Galucio (2001) | |
| 60184 | Mekens-ICR-WB | te | | | Vilacy Galucio, Ana. 2001 () | |
| 41332 | Mende | sirin | | | Hoel et al. (1994) | |
| 35417 | Menya | ki | | | Whitehead (2004) | |
| 42628 | Meriam | ábi | | | Piper (1989) | |
| 50828 | Mewati | ja | | | Gusain (2003) | |
| 40267 | Meyah | ofa | | | Gravelle (2004) | |
| 39872 | Mian | ó | | | Fedden (2007) | |
| 30753 | Mian | ó | | | Fedden (2007) | |
| 30751 | Mian | é | | | Fedden (2007) | |
| 30752 | Mian | é- | | | Fedden (2007) | |
| 30754 | Mian | ó- | | | Fedden (2007) | |
| 43873 | Modern Hebrew | -a | | | Glinert (1989) | |
| 31144 | Moken | ʔolaaŋ | | | Veena (1980) | |
| 31143 | Moken | ñaa | | | Veena (1980) | |
| 46648 | Mombum | ewɛi | | | Boelaars (1950) | |
| 48824 | Mongolian (Halh Dialect) | tuuniig | | | Gaunt and Bayarmandakh (2004) | |
| 50024 | Mono | -i | The form '-ng' also exists. | | Evans (2015) | |
| 45792 | Morisyen | li | | | Baker (1972) | |
| 43620 | Moroccan Arabic | -ha | | | Harrell (1962) | |
| 35145 | Moskona | ofa | | | Gravelle (2010) | |
| 60890 | Mpakwithi | ŋyun̪u | | | Dixon (1981) | |
| 61793 | Mpur | men | | | Odé (2002) | |
| 40636 | Mufian | éko'w | | | Conrad et al. (1978) | |
| 52536 | Muinane | díígo | | | Walton, Hensarling and Maxwell (2000) | |
| 57114 | Mumuye (Zing Dialect) | wu | | | Shimizu (1983) | |
| 34751 | Muna | anoa | | | van den Berg (1989) | |
| 60280 | Mundari-ICR-KQ | ay | | | Osada (1992) | |
| 59992 | Mundari-ICR-LB | ay | | | Osada (1992) | |
| 60469 | Mundari_ICR_TCC | ay | | | Osada (1992) | |
| 59215 | Mungbam (Biya Dialect) | wɩ˥, wo˥ | | | Lovegren (2013) | |
| 59111 | Mungbam (Munken Dialect) | wu˥ | | | Lovegren (2013) | |
| 59310 | Mungbam (Ngun Dialect) | we˥ | | | Lovegren (2013) | |
| 53715 | Murui Huitoto | naiɲaiɲo | | | Piñeros and Roselli (2000) | |
| 25493 | Muruwari | punha | | | Oates (1988) | |
| 47876 | Mussau-Emira | =a | | | Lynch et al. (2002) | |
| 47866 | Mussau-Emira | ia | | | Lynch et al. (2002) | |
| 30436 | Nabak | ek | | | Fabian et al. (1998) | |
| 53380 | Nadëb | ta- | | | Bolaños and Epps (2009) | |
| 59600 | Nama | ɸæ | | | Evans et al (2017) | |
| 22327 | Nambu | bä | | | Evans (2013) | |
| 41696 | Namia | eko | | | Feldpausch and Feldpausch (1992) | |
| 59696 | Namo (Tais Dialect) | fæ | | | Evans et al (2017) | |
| 58358 | Nateni | nɩ˩ | | | Neukom (1995) | |
| 56646 | Nawuri | kə̀mó | | | Sherwood (1982) | |
| 29114 | Ndjébbana | ŋayábba | | | McKay (2000) | |
| 46600 | Ndom | ɛfe | | | Boelaars (1950) | |
| 55704 | Ndut | ɗi, ri | | | Morgan (1996) | |
