| Niterói | Niterói |
| Nithard | Nithard |
| Nitobe Inazō | Inazō Nitobe |
| Nitocris | Nitocris |
| Nitocris I | Nitocris Ire |
| nitpicking | ergoterie |
| Nitra Region | Région de Nitra |
| nitrate | nitrate |
| nitric acid | acide nitrique |
| nitrification | nitrification |
| nitro compound | composé nitré |
| Nitro-gliycerin | Nitroglycérine |
| Nitroethane | Nitroéthane |
| nitrogen | azote |
| nitrogen cycle | cycle de l'azote |
| nitrogen dioxide | dioxyde d'azote |
| nitrogen fixation | fixation de l'azote |
| Nitrogen group | Pnictogène |
| nitrogen monoxide | monoxyde d'azote |
| nitrogen oxide | oxyde d'azote |
| nitrogen oxides | oxydes d'azote |
| Nitrogenous base | Base azotée |
| nitrogenous fertiliser | engrais azote |
| nitroglycerin | nitroglycérine |
| nitroglycerine | nitroglycérine |
| Nitroimidazole | Nitroimidazole |
| Nitromethane | Nitrométhane |
| Nitronium ion | Nitronium |
| Nitrophosphate process | Nitrophosphate |
| nitrosamine | nitrosamine |
| nitrous | nitreux |
| nitrous oxide | oxyde nitreux |
| Nitta clan | Clan Nitta |
| nitty-gritty | fond |
| nitwit | imbécile |
| Niue | Nioué |
| Niue national football team | Équipe de Niué de football |
| Niue national rugby union team | Équipe de Niué de rugby à XV |
| Niujie Mosque | Mosquée de Niujie |
| Niva | Niva |
| Niva River | Niva |
| Nivea | Nivea Hamilton |
| Nivkh language | Nivkhes |
| Nivkhs | Nivkhes |
| Niwano Peace Prize | Prix Niwano de la paix |
| Nix | Nix |
| Nixon | Nixon |
| Nizam | Nizam |
| Nizam al-Mulk | Nizam al-Mulk |
| Nizamiyya | Nizamiyyah |
| Nizar Qabbani | Nizar Kabbani |
| Nizari | Nizârites |
| Nizaris | Nizârites |
| Nizhnekamsk | Nijnékamsk |
| Nizhneudinsk | Nijneoudinsk |
| Nizhnevartovsk | Nijnévartovsk |
| Nizhni Novgorod | Nijni-Novgorod |
| Nizhni Tagil | Nijni-Taguil |
