| 80 | Kwini | McGregor (1993) | Free |
| 243 | Kwoma | Kooyers (1974) | |
| 153 | Lampung | Walker (1976) | |
| 6 | Lardil | Ngakulmungan Kangka Leman (1997) | |
| 33 | Latin | Kennedy (1952) | |
| 574 | Lelemi | Allan (1973) | Free |
| 278 | Lelepa | Lecrampe (2014) | Bound |
| 277 | Lelepa | Lecrampe (2014) | Free |
| 306 | Lepcha | Plaisier (2007) | Free |
| 690 | Letyi-Lejti | Blake et al. (2011) | |
| 187 | Limilngan | Harvey (2001) | |
| 446 | Lingala | Meeuwis (2010) | Free |
| 611 | Lobi | Maïmouna (2007) | Free |
| 575 | Logba (Alakpeti Dialect) | Dorvlo (2008) | Free |
| 177 | Longgu | Hill (1992) | |
| 173 | Loniu | Hamel (1985) | |
| 178 | Lovono | François (2010) | |
| 75 | Lower Sorbian | Stone (1993b) | Free |
| 489 | Macaguán | Lobo-Guerrero and Herrera (2000) | |
| 490 | Macaguán | Lobo-Guerrero and Herrera (2000) | |
| 69 | Macedonian | Friedman (1993) | Free |
| 530 | Maco | Labrada (2016) | |
| 147 | Madurese | Davies (2010) | Free |
| 176 | Mafea | Guérin (2008) | |
| 329 | Maithili | Yadav (1996) | Free |
| 170 | Makalero | Huber (2011) | |
| 146 | Makassarese | Jukes (2006) | |
| 203 | Maklew | Boelaars (1950) | |
| 598 | Makwe | Devos (2008) | Free |
| 156 | Malagasy, plateau | Griffiths (1854) | Free |
| 37 | Malak-Malak | Birk (1976) | Free |
| 432 | Malay | Othman and Atmosumarto (1995) | Free |
| 674 | Malay (Alor Dialect) | Baird, Klamer & Kratochvíl (2004) | |
| 676 | Malay (Ambon Dialect) | Minde (1997) | |
| 680 | Malay (Banda Dialect) | Paauw (2009) | |
| 675 | Malay (Kupang Dialect) | Steinhauer (1983) | |
| 681 | Malay (Larantuka Dialect) | Paauw (2009) | |
| 679 | Malay (Manado Dialect) | Paauw (2009) | |
| 678 | Malay (Manado Dialect) | Paauw (2009) | |
| 677 | Malay (North-Moluccan Dialect) | Taylor (1983) | |
| 682 | Malay (Papua Dialect) | Paauw (2009) | |
| 451 | Malayalam | Asher and Kumari (1997) | Free |
| 465 | Malecu | Constenla Umaña (1998) | |
| 586 | Mambay | Anonby (2008) | Free |
| 615 | Mampruli | Kropp Dakubu (1980) | Free |
| 314 | Manchu | Gorelova (2002) | |
| 527 | Mandahuaca | Ramirez (2001) | |
| 272 | Mandarin | Hyslop (2014) | |
| 359 | Mandobo | Wester (2014) | Free |
| 442 | Mangarayi | Merlan (1989) | Free |
