| Abbreviation | Definition |
|---|---|
| N | Negative connection |
| N64 | Nintendo 64 |
| NA | Non-Adaptive |
| NAC | Network Adapter Card |
| NACA | Not A Clone Amplifier |
| NAD | Noise Adding Device |
| NADS | Network Attached DICOM Server |
| NAS | Network Attached Storage |
| NBC | No Backwards Compatibility |
| NBH | National Builders Hardware |
| NC | Natural Casing |
| NC | Network Computer |
| NC | Noise Cancellation |
| NC | Non-Chargeable |
| NC | Not Connected |
| NCAP | Network Capable Application Processor |
| NCF | Non-Conducting Film |
| NCMV | Normally Closed Master Valve |
| NCO | Numerically Controlled Oscillator |
| NCPI | Network Critical Physical Infrastructure |