| Abbreviation | Definition |
|---|---|
| NCU | Nanobot Control Unit |
| NDG | Neopet Dreams Guild |
| NDH | Northern Dawn Heroes |
| NDSF | New Dark Side Forum |
| NEO | None Existing One |
| NERV | German for "nerve" |
| NERV | Neo Earth of Return Versication |
| NFC | Near Field Communication |
| NG | Nemesis Gate |
| NGP | Nymphalid Ground Plan |
| NH | Nearly Human |
| NHO | New Hell Order |
| NI | New Imperium |
| NIN | Neopians In Need |
| NMS | New Millenium Spider |
| NNFF | Neural Network Force Field |
| NOA | New Order of Armada |
| NOD | Nodistic Order of Destruction |
| NOM | Novus Ordum Mundi |
| NOMAN | National Organization for Matrimonial Attorneys Nationwide |