| Nisan | Nisán |
| Nisargadatta Maharaj | Sri Nisargadatta Maharaj |
| Nishapur | Nishapur |
| Nisibis | Acre |
| Nismo | Nismo |
| Nisos | Niso |
| Nisroch | Nisroch |
| Nissan Group | Nissan |
| Nissan Motors | Nissan |
| Nissan River | Nissan |
| Nissan Skyline GT-R | Nissan Skyline |
| Nissan Stadium | Estadio Internacional de Yokohama |
| Nissan Tiida | Nissan Tiida |
| Nissl body | Cuerpos de Nissl |
| Nistru | Dniéster |
| nit | liendre |
| Nit Phibunsongkhram | Nitya Pibulsonggram |
| niter | nitro |
| Niter kibbeh | Niter kibbeh |
| Niteroi | Manaos |
| Niterói | Niterói |
| Niterói Contemporary Art Museum | Museo de Arte Contemporáneo de Niterói |
| Nithard | Nitardo |
| Nitmiluk National Park | Parque Nacional Nitmiluk |
| Nitobe Inazō | Inazo Nitobe |
| Nitocris | Nitocris |
| nitpicking | pedantería |
| Nitra District | Distrito de Nitra |
| Nitra Region | Región de Nitra |
| nitrate | nitrato |
| nitric acid | ácido nítrico |
| Nitric oxide synthase | Óxido nítrico sintetasa |
| Nitridization | Nitruración |
| nitrification | nitrificación |
| nitro compound | nitrocompuestos |
| Nitro-gliycerin | Nitroglicerina |
| Nitroaldol reaction | Reacción de Henry |
| nitrogen | nitrógeno |
| nitrogen cycle | ciclo del nitrógeno |
| nitrogen dioxide | dióxido de nitrógeno |
| nitrogen fixation | fijación de nitrogeno |
| Nitrogen group | Grupo del nitrógeno |
| nitrogen monoxide | monóxido de nitrógeno |
| nitrogen oxide | óxido de nitrógeno |
| nitrogen oxides | oxidos de nitrógeno |
| Nitrogen-based fertilisers | Abonos nitrogenados |
| Nitrogen-containing base | Base nitrogenada |
| Nitrogenous base | Base nitrogenada |
| nitrogenous fertiliser | fertilizante nitrogenado |
| Nitrogenous fertilisers | Abonos nitrogenados |
| nitroglycerin | nitroglicerina |
| nitroglycerine | nitroglicerina |
| nitrosamine | nitrosamina |
| Nitrosomonas | Nitrosomonas |
| nitrous | nitroso |
| nitrous oxide | óxido nitroso |
| nitty-gritty | fondo |
| nitwit | estúpido |
| Niuatoputapu | Niuatoputapu |
| Niue | Niue |
