| 24448 | Maranunggu | kica | | | Tryon (1970) | |
| 28435 | Martuthunira | ngaliwa | | | Dench (1995) | |
| 39425 | Mauwake | (y)i | | | Berghäll (2010) | |
| 33586 | Mauwake | (y)i | | | Berghäll (2010) | |
| 48654 | Mavea | (n)ida | | | Guérin (2011) | |
| 56992 | Mayogo | nɨ́ | | | Sawka (2001) | |
| 56476 | Mbato | lo˥ | | | Grassias and Bolé-Richard (1983) | |
| 58428 | Mbelimbe | ti˧ | | | Neukom (2004) | |
| 24112 | Mblafe | nəndʒe | | | Doehler, Christian () | |
| 43991 | Mbugu (Inner Dialect) | níne, nne | | | Mous (2003) | |
| 44039 | Mbugu (Normal Dialect) | úswi | | | Mous (2003) | |
| 41674 | Mehek | numbra, yelnda | | | Paulon et al. (2002) | |
| 60062 | Mekens-ICR-LB | kise | | | Galucio (2001) | |
| 60816 | Mekens-ICR-RH | kise | | | Vilacy (2001) | |
| 60432 | Mekens_ICR_TCC | kise | | | Galucio (2001) | |
| 60206 | Mekens-ICR-WB | kise | | | Vilacy Galucio, Ana. 2001 () | |
| 41354 | Mende | nir | | | Hoel et al. (1994) | |
| 35391 | Menya | ne | | | Whitehead (2004) | |
| 42650 | Meriam | mi | | | Piper (1989) | |
| 50850 | Mewati | həm | | | Gusain (2003) | |
| 40289 | Meyah | mimif | | | Gravelle (2004) | |
| 30678 | Mian | níb- | | | Fedden (2007) | |
| 39797 | Mian | níbó | | | Fedden (2007) | |
| 30679 | Mian | nílib- | | | Fedden (2007) | |
| 30677 | Mian | níbó | | | Fedden (2007) | |
| 43895 | Modern Hebrew | anˈaxnu | | | Glinert (1989) | |
| 31091 | Moken | kamoy | | | Veena (1980) | |
| 31092 | Moken | ʔetaʔ | | | Veena (1980) | |
| 46670 | Mombum | num | | | Boelaars (1950) | |
| 48846 | Mongolian (Halh Dialect) | bid | | | Gaunt and Bayarmandakh (2004) | |
| 50046 | Mono | maita | | | Evans (2015) | |
| 45814 | Morisyen | nutu | | | Baker (1972) | |
| 43642 | Moroccan Arabic | ħna | | | Harrell (1962) | |
| 35119 | Moskona | mif | | | Gravelle (2010) | |
| 60912 | Mpakwithi | bwi | | | Dixon (1981) | |
| 61815 | Mpur | yek | | | Odé (2002) | |
| 40658 | Mufian | apé' | | | Conrad et al. (1978) | |
| 52558 | Muinane | mɨ́ɨ́ʔai | | | Walton, Hensarling and Maxwell (2000) | |
| 57136 | Mumuye (Zing Dialect) | wò | | | Shimizu (1983) | |
| 34716 | Muna | intaidiimu | | | van den Berg (1989) | |
| 60302 | Mundari-ICR-KQ | abu | | | Osada (1992) | |
| 60014 | Mundari-ICR-LB | ale | | | Osada (1992) | |
| 60456 | Mundari_ICR_TCC | abu | | | Osada (1992) | |
| 59191 | Mungbam (Abar Dialect) | sɔ˧ | | | Lovegren (2013) | |
| 59237 | Mungbam (Biya Dialect) | sə˧ | | | Lovegren (2013) | |
| 59284 | Mungbam (Missong Dialect) | sə˧ | | | Lovegren (2013) | |
| 59133 | Mungbam (Munken Dialect) | sə˧ | | | Lovegren (2013) | |
| 59332 | Mungbam (Ngun Dialect) | sə˧ | | | Lovegren (2013) | |
| 53737 | Murui Huitoto | kaɨ | | | Piñeros and Roselli (2000) | |
| 25467 | Muruwari | ngana | | | Oates (1988) | |
