| Name | Other Name | Family | Nativ Name | ISO6391 Code | ISO6392T Code | ISO6392B Code | ISO6393 Code | Notes |
|---|---|---|---|---|---|---|---|---|
| North Ndebele | Niger–Congo | isiNdebele | nd | nde | nde | nde | also known as Northern Ndebele | |
| Nepali | Indo-European | नेपाली | ne | nep | nep | nep | ||
| Ndonga | Niger–Congo | Owambo | ng | ndo | ndo | ndo | ||
| Navajo | Navaho | Dené–Yeniseian | Diné bizaad | nv | nav | nav | nav | |
| Nauru | Austronesian | Dorerin Naoero | na | nau | nau | nau | also known as Nauruan | |
| Mongolian | Mongolic | Монгол хэл | mn | mon | mon | mon + 2 | macrolanguage | |
| Marshallese | Austronesian | Kajin M̧ajeļ | mh | mah | mah | mah | ||
| Marathi | Indo-European | मराठी | mr | mar | mar | mar | also known as Marāṭhī | |
| Maori | Austronesian | te reo Māori | mi | mri | mao | mri | also known as Māori | |
| Manx | Indo-European | Gaelg; Gailck | gv | glv | glv | glv |