| noway | de ninguna manera |
| Nowell | Navidad |
| Nowendoc National Park | Parque Nacional Nowendoc |
| nowhere | en ninguna parte |
| nowise | de ninguna manera |
| Nowogród | Nóvgorod |
| Nowruz | Noruz |
| Nowy Sącz | Nowy Sącz |
| Nowy Targ | Nowy Targ |
| noxious | nocivo |
| Noyon | Noyon |
| Nozomi | Nozomi |
| Nozomu Sasaki | Sasaki Nozomu |
| nozzle | alcachofa |
| NP | NP |
| NP-complete | NP-completo |
| NPP Zvezda | Zvezda |
| NPSH | NPSH |
| NRJ Radio | NRJ |
| NRX | NRX |
| NRZI | No retorno a cero invertido |
| NS | NS |
| NSA | Agencia de Seguridad Nacional |
| Nsanje District | Distrito de Nsanje |
| NSF | National Science Foundation |
| Nsibidi | Símbolos Nsibidi |
| NSSL | NOAA |
| Ntcheu District | Distrito de Ntcheu |
| Ntchisi District | Distrito de Ntchisi |
| NTFS | New Technology File System |
| Nth root | Raíz |
| Ntombi of Swaziland | Ntombi de Swazilandia |
| NTSC | NTSC |
| Nu genre | Nu metal |
| Nu people | Nu |
| Nu Scorpii | Nu Scorpii |
| Nu Virgos | VIA GRA |
| nuance | degradación |
| nuancing | matización |
| nub | buche |
| Nuba | Nuba |
| Nuba Mountains | Montes Nuba |
| Nubia | Nubia |
| Nubian Ibex | Capra ibex nubiana |
| nubile | núbil |
| NUbuntu | NUbuntu |
| nuclear | nuclear |
| nuclear accident | accidentes nucleares |
| Nuclear and radiation accidents | Lista de accidentes nucleares |
| Nuclear astrophysics | Astrofísica nuclear |
| Nuclear Blast | Nuclear Blast |
| nuclear bomb | bomba atómica |
| nuclear debate | polémica nuclear |
| nuclear disarmament | desarme nuclear |
| nuclear energy | energía nuclear |
| Nuclear Energy Agency | Agencia para la Energía Nuclear |
| nuclear energy legislation | legislación de energía nuclear |
| Nuclear energy policy | Política sobre Energía Nuclear |
| nuclear energy use | usos de la energía nuclear |
| Nuclear envelope | Envoltura nuclear |
| nuclear explosion | explosiones nucleares |
| nuclear facility | instalación nuclear |
| nuclear fission | fisión nuclear |
| Nuclear force | Fuerzas nucleares |
| nuclear fuel | combustibles nucleares |
| Nuclear fuel cycle | Ciclo del combustible nuclear |
| nuclear fuel element | elemento combustible nuclear |
| nuclear fusion | fusión nuclear |
| nuclear hazard | peligro nuclear |
| Nuclear isomer | Isómero nuclear |
| Nuclear lamina | Lámina nuclear |
| Nuclear leaks after Japan quake are worse than first reported | Japón reporta escapes serios de material radioactivo |
| Nuclear marine propulsion | Propulsión nuclear marina |
| Nuclear Non-Proliferation Treaty | Tratado de No Proliferación Nuclear |
| nuclear physics | física nuclear |
| Nuclear pore | Poro nuclear |
| Nuclear power | Energía nuclear |
| Nuclear power controversy | Política sobre Energía Nuclear |
| Nuclear power phase-out | Abandono de la energía nuclear |
| nuclear power plant | planta nuclear |
