word | | Country name |
| Navassa | Navassa Island | conventional long form: none conventional short form: Navassa Island |
| Nederland | Netherlands | conventional long form: Kingdom of the Netherlands conventional short form: Netherlands local long form: Koninkrijk der Nederlanden local short form: Nederland |
| Nederlanden | Netherlands | conventional long form: Kingdom of the Netherlands conventional short form: Netherlands local long form: Koninkrijk der Nederlanden local short form: Nederland |
| Nederlandse | Netherlands Antilles | conventional long form: none conventional short form: Netherlands Antilles local long form: none local short form: Nederlandse Antillen former: Curacao and Dependencies |
| Negara | Brunei | conventional long form: Brunei Darussalam conventional short form: Brunei local long form: Negara Brunei Darussalam local short form: Brunei |
| Nepal | Nepal | conventional long form: Federal Democratic Republic of Nepal conventional short form: Nepal local long form: Sanghiya Loktantrik Ganatantra Nepal local short form: Nepal |
| Netherlands | Indonesia | conventional long form: Republic of Indonesia conventional short form: Indonesia local long form: Republik Indonesia local short form: Indonesia former: Netherlands East Indies, Dutch East Indies |
| Netherlands | Netherlands | conventional long form: Kingdom of the Netherlands conventional short form: Netherlands local long form: Koninkrijk der Nederlanden local short form: Nederland |
| Netherlands | Netherlands Antilles | conventional long form: none conventional short form: Netherlands Antilles local long form: none local short form: Nederlandse Antillen former: Curacao and Dependencies |
| Netherlands | Suriname | conventional long form: Republic of Suriname conventional short form: Suriname local long form: Republiek Suriname local short form: Suriname former: Netherlands Guiana, Dutch Guiana |
| Nevis | Saint Kitts and Nevis | conventional long form: Federation of Saint Kitts and Nevis conventional short form: Saint Kitts and Nevis former: Federation of Saint Christopher and Nevis |
| New | New Caledonia | conventional long form: Territory of New Caledonia and Dependencies conventional short form: New Caledonia local long form: Territoire des Nouvelle-Caledonie et Dependances local short form: Nouvelle-Caledonie |
| New | New Zealand | conventional long form: none conventional short form: New Zealand abbreviation: NZ |
| new | Niue | conventional long form: none conventional short form: Niue note: pronounciation falls between nyu-way and new-way, but not like new-wee former: Savage Island |
| New | Papua New Guinea | conventional long form: Independent State of Papua New Guinea conventional short form: Papua New Guinea local short form: Papuaniugini former: Territory of Papua and New Guinea abbreviation: PNG |
| New | Vanuatu | conventional long form: Republic of Vanuatu conventional short form: Vanuatu local long form: Ripablik blong Vanuatu local short form: Vanuatu former: New Hebrides |
| ng | Philippines | conventional long form: Republic of the Philippines conventional short form: Philippines local long form: Republika ng Pilipinas local short form: Pilipinas |
| Nghia | Vietnam | conventional long form: Socialist Republic of Vietnam conventional short form: Vietnam local long form: Cong Hoa Xa Hoi Chu Nghia Viet Nam local short form: Viet Nam abbreviation: SRV |
| Nicaragua | Nicaragua | conventional long form: Republic of Nicaragua conventional short form: Nicaragua local long form: Republica de Nicaragua local short form: Nicaragua |
| Niger | Niger | conventional long form: Republic of Niger conventional short form: Niger local long form: Republique du Niger local short form: Niger |
| Nigeria | Nigeria | conventional long form: Federal Republic of Nigeria conventional short form: Nigeria |
| Nihon | Japan | conventional long form: none conventional short form: Japan local long form: Nihon-koku/Nippon-koku local short form: Nihon/Nippon |