| Island's name | Island group | Country/Dependency |
| Na Mokulua |  Hawaiian Islands |  United States |
| Naart | Upper Lough Erne |  Ireland |
| Nærøya | |  Norway |
| Nagy-Pandúr-sziget | Danube River |  Hungary |
| Nahaleg | Dahlak Archipelago |  Eritrea |
| Naissaar | Tallinn Bay, Gulf of Finland |  Estonia |
| Nakanoshima | Tokara Islands part of the Satsunan Islands part of the Ryukyu Islands |  Japan |
| Namdrick Atoll | Ralik Chain |  Marshall Islands |
| Namorik | Ralik Chain | Marshall Islands |
| Namu Atoll | Ralik Chain | Marshall Islands |
| Namyit | Spratly Islands | Disputed between:
 China,
 Republic of China,
 Vietnam,
 Brunei,
 Philippines, and
 Malaysia |
| Nancowry | Nicobar Islands |  India |
| Nanshan | Spratly Islands | Disputed between:
China,
Republic of China,
Vietnam,
Brunei,
Philippines, and
Malaysia |
| Nantucket |  Massachusetts | United States |
| Napuka |  Tuamotus,  French Polynesia |  France |
| Nargin | Baku Bay |  Azerbaijan |
| Nashawena | Elizabeth Islands, Massachusetts | United States |
| Nassau | Cook Islands |  Cook Islands (self-governing in free association with New Zealand) |
| Natuna | Natuna Islands |  Indonesia |
| Nauru | |  Nauru |
| Naushon | Elizabeth Islands, Massachusetts | United States |
| Navassa | Greater Antilles | Claimed by the United States and  Haiti |
| Navy | Niagara River,  Ontario | .svg.png) Canada |
| Naxos | Cyclades |  Greece |
| Ndrova | Admiralty Islands |  Papua New Guinea |
| Neal | Ohio River,  West Virginia | United States |
| Necker | Northwestern Hawaiian Islands | United States |
| Necker |  British Virgin Islands |  United Kingdom |
| Neebish Island | St. Marys River,  Michigan | United States |
| Negei |  British Columbia | Canada |
| Negit | Mono Lake,  California | United States |
| Negros | Visayas | Philippines |
| Nell | Kwajalein Atoll, Ralik Chain | Marshall Islands |
| Nelson |  Alaska | United States |
| Nelson | South Shetland Islands | Claimed by:
Argentine Antarctica,  Argentina,
 Antártica Chilena Province of  Chile, and
 British Antarctic Territory of the United Kingdom |
| Nengonengo | Tuamotus, French Polynesia | France |
| Nerlandsøya | | Norway |
| Nesøya | Salten, Nordland | Norway |
| Neuwerk | Wadden Sea |  Germany |
| Neville |  Pennsylvania | United States |
| Nevis | Leeward Islands group of the Lesser Antilles |  Saint Kitts and Nevis |
| New Britain | Bismarck Archipelago | Papua New Guinea |
| New Era Bar | Willamette River,  Oregon | United States |
| New Ireland | Bismarck Archipelago | Papua New Guinea |
| New |  Falkland Islands | United Kingdom |
| New Guinea | Melanesia | Divided between Indonesia and Papua New Guinea |
| Newfoundland |  Newfoundland and Labrador | Canada |
| New Hanover | Bismarck Archipelago | Papua New Guinea |
| New Mecklenburg | Bismarck Archipelago | Papua New Guinea |
| New World | Newfoundland and Labrador | Canada |
| Ngamotukaraka | Motukawao Islands, Hauraki Gulf |  New Zealand |
| Ngofonua | Tongatapu group |  Tonga |
| Ngumi | Bajuni Islands |  Somalia |
| Nguna | Shepherd Islands |  Vanuatu |
| Ngwēl | Torres Islands | Vanuatu |
| Niau | Tuamotus, French Polynesia | France |
| Nichol | Buckhorn Lake Ontario | Canada |
| Nicholson | Allegheny River, Pennsylvania | United States |
| Nicollet | Mississippi River,  Minnesota | United States |
| Nicomen | British Columbia | Canada |
| Nightingale |  Tristan da Cunha | British overseas territory of Saint Helena, Ascension and Tristan da Cunha |
| Nihiru | Tuamotus, French Polynesia | France |
| Nīhoa | Northwestern Hawaiian Islands | United States |
| Niʻihau | Hawaiian Islands | United States |
| Niijima | Izu Islands | Japan |
| Nikumaroro | Phoenix Islands |  Kiribati |
| Ninemile | Allegheny River, Pennsylvania | United States |
| Nine Mile | Mississippi River,  Iowa | United States |
| Niniva | Lifuka group of the Haʻapai group | Tonga |
| Nisida | Flegree Islands |  Italy |
| Nisyros | Dodecanese | Greece |
| Niuafo'ou | Niua group | Tonga |
| Niuatoputapu | Niua group | Tonga |
| Niue | |  Niue (self-governing in free association with New Zealand) |
| Nixes Mate | Boston Harbor, Massachusetts | United States |
| Nizki | Semchi Islands group of the Near Islands in the Aleutian Islands, Alaska | United States |
| Île de Noirmoutier | Vendée,  Pays de la Loire | France |
| Île aux Noix | Richelieu River,  Quebec | Canada |
| Nólsoy |  Faroe Islands |  Denmark |
| Nomans Land | Massachusetts | United States |
| Nomuka | 'Otu Mu'omu'a group of the Haʻapai group | Tonga |
| Nomuka iki | 'Otu Mu'omu'a group of the Haʻapai group | Tonga |
| No-Name | Allegheny River, Pennsylvania | United States |
| Nonamesset | Elizabeth Islands, Massachusetts | United States |
| Nootka | British Columbia | Canada |
| Nora | Dahlak Archipelago | Eritrea |
| Nordkvaløya | | Norway |
| Nordaustlandet | Northeast Land, Svalbard | Norway |
| Norderney | East Frisian Islands | Germany |
| Norderoog | North Frisian Islands | Germany |
| Nordmarsch-Langeneß | North Frisian Islands | Germany |
| Nordre Kvaløy | | Norway |
| Nordstrand | North Frisian Islands | Germany |
| Nordstrandischmoor | North Frisian Islands | Germany |
Norfolk Island  | Norfolk Island | .svg.png) Australia |
| North | New Zealand | New Zealand |
| North Andaman | Andaman Islands | India |
| North Bass | Lake Erie,  Ohio | United States |
| North Brother | Andaman Archipelago, Indian Ocean | India |
| North Brother | East River,  New York | United States |
| North Brother | Chagos Archipelago, Indian Ocean | United Kingdom |
| North Brother | Atlantic Ocean,  Connecticut | United States |
| North Brother | Seven Brothers, Bab-el-Mandeb |  Djibouti |
| North Dumpling | Fisher's Island Sound, New York | United States |
| North Harbour | Lake Erie, Ontario | Canada |
| North Haven | Penobscot Bay,  Maine | United States |
| North Havra |  Shetland Islands |  Scotland |
| North Hero | Lake Champlain,  Vermont | United States |
| North Limestone | Georgian Bay Ontario | Canada |
| North Long | |  Namibia |
| North Manitou | Lake Michigan, Michigan | United States |
| North Otter | Georgian Bay Ontario | Canada |
| North Monomoy | Cape Cod, Massachusetts | United States |
| North Ronaldsay | The North Isles,  Orkney Islands | Scotland |
| North Sentinel | Andaman Islands | India |
| North Stradbroke Island | Moreton Bay Islands | Australia |
| North Twin | Apostle Islands,  Wisconsin | United States |
| North Uist | Outer Hebrides | Scotland |
| North Watcher | Georgian Bay Ontario | Canada |
| Northeast Cay | Spratly Islands | Disputed between China, Republic of China, Vietnam, Brunei, Philippines, and Malaysia |
| Northwest | Timbalier Bay,  Louisiana | United States |
| Northwest Burnt | Georgian Bay Ontario | Canada |
| Isle of Noss | Shetland Islands | Scotland |
| Nottawasaga | Georgian Bay Ontario | Canada |
| Nøtterøy | Vestfold | Norway |
| Nuapapu | Vavaʻu group | Tonga |
| Isla Nueva | Antártica Chilena Province | Chile |
| Nuguria | Papua New Guinea, Melanesia | Papua New Guinea |
| Nuku | Tongatapu group | Tonga |
| Nuku | 'Otu Mu'omu'a group of the Haʻapai group | Tonga |
| Nukuatea | Wallis Island | France |
| Nukufaiau | 'Otu Mu'omu'a group of the Haʻapai group | Tonga |
| Nukufotu | Wallis Island | France |
| Nukuhifala | Wallis Island | France |
| Nukulei | Lulunga archipelago of the Haʻapai group | Tonga |
| Nukuloa | Wallis Island | France |
| Nukumanu | Papua New Guinea, Melanesia | Papua New Guinea |
| Nukunione | Wallis Island | France |
| Nukunukumotu | Tongatapu group | Tonga |
| Nukuoro |  Pohnpei |  Federated States of Micronesia |
| Nukupule | Lifuka group of the Haʻapai group | Tonga |
| Nukutapu | Wallis Island | France |
| Nukuteatea | Wallis Island | France |
| Nukutepipi | Duke of Gloucester Islands, Tuamotus, French Polynesia | France |
| Nukutula | 'Otu Mu'omu'a group of the Haʻapai group | Tonga |
| Nunivak | Bering Sea, Alaska | United States |
| Nyord | Baltic Sea | Danmark |