| Abbreviation | Definition |
|---|---|
| NNN | New Nation News |
| NNN | Nippon News Network |
| NNR | Neurorehabilitation and Neural Repair |
| NNR | Nielsen Net Ratings |
| NNW | North by Northwest |
| NOD | Naturally Occurring Denitrfication |
| NOES | Nightmare On Elm Street |
| NOL | No Ordinary Love |
| NOLF | No One Lives Forever |
| NOLX | Notes On Linguistics |
| NOM | Name |
| NOM | Number of Open Microphones |
| NOMA | National Online Media Association |
| NOMA | Non-Overlapping Magisteria by Stephen Jay Gould |
| NOMDEPLUME | Pen Name |
| NONE | Now Other Needs Exist |
| NORC | National Opinion Research Center |
| NOTB | North Of The Border |
| NOU | Norges Offentlige Utredninger |
| NP | Now Playing |