| 51801 | Malecu | toí | | | Constenla Umaña (1998) | |
| 57095 | Mambay | ri˩ | | | Anonby (2008) | |
| 58339 | Mampruli | tɩ | | | Kropp Dakubu (1980) | |
| 44717 | Manchu | be | | | Gorelova (2002) | |
| 54399 | Mandahuaca | wéjhanawi | | | Ramirez (2001) | |
| 42923 | Mandarin | wǒmen | | | Hyslop (2014) | |
| 46725 | Mandobo | noŋɡüp | | | Wester (2014) | |
| 50713 | Mangarayi | ŋiɭa | | | Merlan (1989) | |
| 40344 | Manikion | emen | | | Reesink (2002) | |
| 41909 | Mansim | niwap | | | Reesink (2002) | |
| 50665 | Maori | maatou | | | Harlow (1996) | |
| 25121 | Mara | ṇirwiña | | | Heath (1981) | |
| 24441 | Maranunggu | ŋaca | | | Tryon (1970) | |
| 61937 | Martuthunira | nganarna | | | Dench (1995) | |
| 33573 | Mauwake | (y)i | | | Berghäll (2010) | |
| 39412 | Mauwake | (y)i | | | Berghäll (2010) | |
| 48661 | Mavea | kam̋im | | | Guérin (2011) | |
| 56999 | Mayogo | ya | | | Sawka (2001) | |
| 56483 | Mbato | lo˥ | | | Grassias and Bolé-Richard (1983) | |
| 58435 | Mbelimbe | ti˧ | | | Neukom (2004) | |
| 24105 | Mblafe | ni | | | Doehler, Christian () | |
| 43998 | Mbugu (Inner Dialect) | níne, nne | | | Mous (2003) | |
| 44046 | Mbugu (Normal Dialect) | úswi | | | Mous (2003) | |
| 41679 | Mehek | numbra | | | Paulon et al. (2002) | |
| 60069 | Mekens-ICR-LB | ose- | | | Galucio (2001) | |
| 60823 | Mekens-ICR-RH | ose | | | Vilacy (2001) | |
| 60439 | Mekens_ICR_TCC | ose | | | Galucio (2001) | |
| 60213 | Mekens-ICR-WB | ose | | | Vilacy Galucio, Ana. 2001 () | |
| 41361 | Mende | nir | | | Hoel et al. (1994) | |
| 35384 | Menya | ne | | | Whitehead (2004) | |
| 42657 | Meriam | ki | | | Piper (1989) | |
| 50857 | Mewati | həm | | | Gusain (2003) | |
| 40296 | Meyah | memef | | | Gravelle (2004) | |
| 39779 | Mian | ní | | | Fedden (2007) | |
| 30662 | Mian | níli | | | Fedden (2007) | |
| 30660 | Mian | ní | | | Fedden (2007) | |
| 30661 | Mian | ní- | | | Fedden (2007) | |
| 43902 | Modern Hebrew | anˈaxnu | | | Glinert (1989) | |
| 31078 | Moken | ʔetaʔ | | | Veena (1980) | |
| 31077 | Moken | kamoy | | | Veena (1980) | |
| 46677 | Mombum | num | | | Boelaars (1950) | |
| 48853 | Mongolian (Halh Dialect) | bid | | | Gaunt and Bayarmandakh (2004) | |
| 50053 | Mono | mani | | | Evans (2015) | |
| 45821 | Morisyen | nuzot | | | Baker (1972) | |
| 43649 | Moroccan Arabic | ħna | | | Harrell (1962) | |
| 35112 | Moskona | mif | | | Gravelle (2010) | |
| 60919 | Mpakwithi | nan̪a | | | Dixon (1981) | |
| 61822 | Mpur | yek | | | Odé (2002) | |
| 40665 | Mufian | afé' | | | Conrad et al. (1978) | |
| 52565 | Muinane | mɨ́ɨ́ʔai | | | Walton, Hensarling and Maxwell (2000) | |
