| Nielles-lès-Bléquin | Nielles-lès-Calais | Niello |
| Niels Bohr | Niels Bohr Institute | Niels Giffey |
| Niels Henrik Abel | Niels Kaj Jerne | Niels Ludvig Westergaard |
| Niels Ryberg Finsen | Niels Schneider | Niels-Christian Holmstrøm |
| Nielsen's spiral | Nielsen–Olsen string | Nielsville, Minnesota |
| Niemann-Pick disease | Niemeyer | Nieuport |
| Nieuport Nighthawk | Nifedipine | Nifenazone |
| Niftawayh | Nifuroxazide | Nifurtoinol |
| Nigeh | Nigel Bishop | Nigel Clough |
| Nigel Codrington | Nigel de Jong | Nigel Hawthorne |
| Nigel Martyn | Nigel Quashie | Nigel Reo-Coker |
| Nigel Short | Nigella | Nigella damascena |
| Nigella deserti | Nigella Lawson | Nigella noeana |
| Nigella oxypetala | Nigella sativa | Nigella tenuifolia |
| Nigella tuberculata | Niger | Niger Premier League |
| Nigeria | Nigeria Airways | Nigeria Airways Flight 2120 |
| Nigeria Premier League | Nigerian naira | Nigga |
| Night | Night at the Museum | Night at the Museum: Battle of the Smithsonian |
| Night at the Museum: Secret of the Tomb | Night Flight from Moscow | Night of the Eagle |
| Night of the Gliders | Night of the Living Dead | Night of the Long Knives |
| Night sweats | Night Train to Lisbon (film) | Night vision |
| Night vision device | Nightcrawler (film) | Nightgown |
| Nightingale Pledge | Nightingale ward | Nightingale's environmental theory |
| Nightmare | Nightmare Creatures | Nightmare Creatures II |
| Nightmute, Alaska | Nights of Cabiria | Nightwear |
| Nigma | Nigrita | Nigrita bicolor |
| Nigrita canicapillus | Nigrita fusconotus | Nigrita luteifrons |
| Nihad Awad | Nihad Hihat | Nihal Atsız |
| Nihat Kahveci | Nihel Cheikh Rouhou | Nihilism |
| Nihit | Niigata Minamata disease | Niigata Television Network 21 |
| Niigata, Niigata | Niihau Incident | Nijat Abasov |
| Nijat Mammadov | Nik Henigman | Nik Pey |
| Nik Welter | Nikah 'urfi | Nikšić |
| Nike Grind | Nike laser | Nike site |
| Nike, Inc. | Niki (airline) | Niki Karimi |
| Niki Lauda | Niki Zimling | Nikica Jelavić |
| Nikita Ivanovich Panin | Nikita Khrushchev | Nikita Rukavytsya |
| Nikkei 225 | Nikki Cox | Nikki Keddie |
| Nikki R Keddie | Nikki Reed | Niklas Andersen |
| Niklas lohmann | Niklas Luhmann | Niklas Moisander |
| Niklas Zennström | Niklaus Wirth | Niko Bellic |
| Niko Bungert | Niko Kovač | Niko Kranjčar |
| Nikola Žigić | Nikola Gruevski | Nikola Kalinić |
| Nikola Karabatić | Nikola Petković | Nikola Pokrivač |
| Nikola Tesla | Nikola Tesla Museum | Nikolaas Tinbergen |
| Nikolaev Zoo | Nikolai Andrianov | Nikolai Berdyaev |
| Nikolai Bukharin | Nikolai Bulganin | Nikolai Fyodorovich Vatutin |
| Nikolai Gogol | Nikolai Kondratiev | Nikolai Ladovsky |
| Nikolai Lobachevsky | Nikolai Nikolaevich Polikarpov | Nikolai Nikolaievich Tzvelev |
| Nikolai Smolnikov | Nikolai Vasilyevich Fyodorov | Nikolai Vavilov |
| Nikolai Vladimirovich Ivanov | Nikolai Vogel | Nikolai Yezhov |
| Nikolai, Alaska | Nikolaj Hänni | Nikolaos Kaklamanakis |
| Nikolaos Plastiras | Nikolaos van Dam | Nikolaos Zisis |
| Nikolas Rose | Nikolaus Hofreiter | Nikolaus Joseph von Jacquin |
| Nikolaus Rhodokanakis | Nikolay Abramov (footballer, born 1950) | Nikolay Basov |
| Nikolay Bobrikov | Nikolay Bogolyubov | Nikolay Chkheidze |
| Nikolay Davydenko | Nikolay Kamov | Nikolay Karamzin |
| Nikolay Kuznetsov (officer) | Nikolay Mladenov | Nikolay Nekrasov |
| Nikolay Ogarev | Nikolay Pirogov | Nikolay Przhevalsky |
| Nikolay Semyonov | Nikolay Vasilyevich Fyodorov | Nikolay Yegorovich Zhukovsky |
| Nikolay Zimyatov | Nikolče Noveski | Nikon |
| Nikon 1 S1 | Nikon AF DX Fisheye-Nikkor 10.5mm f/2.8G ED | Nikon D1 |
| Nikon D100 | Nikon D200 | Nikon D2H |
| Nikon D2X | Nikon D3 | Nikon D300 |
| Nikon D3000 | Nikon D300S | Nikon D3100 |
| Nikon D3200 | Nikon D3S | Nikon D3X |
| Nikon D4 | Nikon D40 | Nikon D50 |
| Nikon D5000 | Nikon D5100 | Nikon D5200 |
| Nikon D60 | Nikon D600 | Nikon D70 |
| Nikon D700 | Nikon D7000 | Nikon D7100 |
| Nikon D7200 | Nikon D80 | Nikon D800 |
| Nikon D90 | Nikon FX format | Nikos Anastopoulos |
| Nikos Chatzopoulos | Nikos Kazantzakis | Nikos Liberopoulos |
| Nikos Machlas | Nikos Spiropoulos | Nikos Spyropoulos |
| Nikotin | Nilavu | Nile Air |
| Nile Valley University | Niles Charter Township, Michigan | Niles, Illinois |
| Niles, Michigan | Niles, New York | Niles, Ohio |
| Nilesat | Nilesat 101 | Nilesat 201 |
| Nilgiritragus hylocrius | Nili | Nilly Karim |
| Nilmar | Nilo Murtinho Braga | Nilo Peçanha |
| Nilometer | Nils Axelsson | Nils Bohlin |
| Nils Johan Andersson | Nils Johan Semb | Nils Liedholm |
| Nils Petersen | Nils Rosén (footballer) | Nils-Aslak Valkeapää |
| Nilwood, Illinois | Nim's Island | Nima Abu-Wardeh |
| Nima Arkani-Hamed | Nima Elbagir | Nima Nakisa |
| Nima Yooshij | Nimardi | Nimaviridae |
| Nimba United FC | Nimbuzz | Nimitz-class aircraft carrier |
| Nimmons, Arkansas | Nimodipine | Nimr |
| Nimr al-Nimr | Nimrod, Minnesota | Nimrud |
| Nimrud ivories | Nimrud lens | Nimzo-Indian Defence |
| Nina Alisova | Nina Bawden | Nina Davuluri |
| Nina Dobrev | Nina Gavrilyuk | Nina Hagen |
| Nina Hartley | Nina Hoss | Nina Kolundžić |
| Nina Simone | Nina Viktorovna Pigulevskala | Nina Williams |
| Nina Zanjani | Nine (2009 live-action film) | NINE MUSES |
| Nine Years' War | Nine-point circle | Ninetology Black Pearl II |
| Ninetology Insight | Ninetology Outlook Pure | Ninetology Pearl Mini |
| Ninetology Stealth II | Ninetology U9X1 | Ninetology U9Z1 |
| Ninetology U9Z1+ | Ninety Six, South Carolina | Ning (website) |
| Ning.com | Ningbo Lishe International Airport | Ninhydrin |
