| Abbreviation | Definition |
|---|---|
| NTE | Network Termination Equipment |
| NTP | Numerous Time Programmable |
| NUS | Nintendo Ultra Sixty-four |
| NUT | Neurotech Unit Terminal |
| NVD | Nano-Video Disc |
| NVMHCI | Non-Volatile Memory Host Controller Interface Specification |
| NVRAM | onVolatile Random Access Memory |
| O | Open |
| OAC | Output Audio CODEC (CODer-DECoder) |
| OATH | Operators American Tactical Hardware |
| OB | Option Button |
| OB | Output Buffer |
| OBDC | On Board Diagnostic Computer |
| OC | OverClock |
| OC | Over-Clocked |
| OC | OverClocking |
| OCE | One Clip Edit |
| OCF | Off-Center Fed |
| OCF | Open Computing Facility |
| OCIA | Opto-Coupled Interface Adapter |