word | | Nationality |
| Monacan | Monaco | noun: Monegasque(s) or Monacan(s) adjective: Monegasque or Monacan |
| Monegasque | Monaco | noun: Monegasque(s) or Monacan(s) adjective: Monegasque or Monacan |
| Mongolian | Mongolia | noun: Mongolian(s) adjective: Mongolian |
| Montenegrin | Montenegro | noun: Montenegrin(s) adjective: Montenegrin |
| Montserratian | Montserrat | noun: Montserratian(s) adjective: Montserratian |
| Moroccan | Morocco | noun: Moroccan(s) adjective: Moroccan |
| Mosotho | Lesotho | noun: Mosotho (singular), Basotho (plural) adjective: Basotho |
| Motswana | Botswana | noun: Motswana (singular), Batswana (plural) adjective: Motswana (singular), Batswana (plural) |
| Mozambican | Mozambique | noun: Mozambican(s) adjective: Mozambican |
| Namibian | Namibia | noun: Namibian(s) adjective: Namibian |
| nationals | American Samoa | noun: American Samoan(s) (US nationals) adjective: American Samoan |
| Nauruan | Nauru | noun: Nauruan(s) adjective: Nauruan |
| Nepali | Nepal | noun: Nepali (singular and plural) adjective: Nepali |
| neutral | Kosovo | noun: Kosovar (Albanian), Kosovac (Serbian) adjective: Kosovar (Albanian), Kosovski (Serbian) note: Kosovan, a neutral term, is sometimes also used as a noun or adjective |
| Nevisian | Saint Kitts and Nevis | noun: Kittitian(s), Nevisian(s) adjective: Kittitian, Nevisian |
| New | New Caledonia | noun: New Caledonian(s) adjective: New Caledonian |