| Abbreviation | Definition |
|---|---|
| N | Nano- |
| N | Negative |
| N | Neutral |
| N | Node |
| N/C | Normally Closed |
| N/O | Normally Open |
| NA | Numerical Aperture |
| NAB | Network Address Block |
| NAC | Net Access Corporation |
| NAD | Network address unit |
| NAD | Network Addressing Domain |
| NAD | Note Amplitude Data |
| NAE | north Alabama electric |
| NAE | North American Electric |
| NAEC | North Arkansas Electric Cooperative |
| NAED | National Association of Electrical Distributors |
| NAND | logical NOT AND |
| NASDAQM | Nasdaq for Microsoft |
| NAT | Network Address Translator |
| NAT | Non-linear and Adaptive Technology |