| Name | Other Name | Family | Nativ Name | ISO6391 Code | ISO6392T Code | ISO6392B Code | ISO6393 Code | Notes |
|---|---|---|---|---|---|---|---|---|
| Rundi | Niger–Congo | Ikirundi | rn | run | run | run | also known as Kirundi | |
| Quechua | Quechuan | Runa Simi; Kichwa | qu | que | que | que + 44 | macrolanguage | |
| Malayalam | Dravidian | മലയാളം | ml | mal | mal | mal | ||
| Malay | Austronesian | Bahasa Melayu; بهاس ملايو | ms | msa | may | msa + 13 | macrolanguage; Standard Malay is [zsm]; Indonesian is [id/ind] | |
| Malagasy | Austronesian | fiteny malagasy | mg | mlg | mlg | mlg + 10 | macrolanguage | |
| Macedonian | Indo-European | македонски јазик | mk | mkd | mac | mkd | ||
| Manx | Indo-European | Gaelg; Gailck | gv | glv | glv | glv | ||
| Latvian | Indo-European | latviešu valoda | lv | lav | lav | lav + 2 | macrolanguage | |
| Luba-Katanga | Niger–Congo | Kiluba | lu | lub | lub | lub | also known as Luba-Shaba | |
| Lithuanian | Indo-European | lietuvių kalba | lt | lit | lit | lit |