| Abbreviation | Definition |
|---|---|
| NASD | Network-Attached Secure Disk |
| NASS | Network Attachment Sub-System |
| NAT | Name Address Translation |
| NAT | Network Address Translator |
| NAT | Network Affinity Threshold |
| NAT | Network and Telnet |
| NAUN | Nearest Active Upstream Neighbor |
| NAV | Network Allocation Vector |
| NBAC | Network Based Application Control |
| NBAR | Network Based Application Recognition |
| NBB | Network Boot Bar |
| NBC | Net Briefing Center |
| NBD | Network Block Device |
| NBF | NetBIOS Frames Protocol |
| NBI | Native Bus Interface |
| NBIG | Network-Based Internet Gateway |
| NBM | Novell BorderManager |
| NBMA | Non-Broadcast Multi-Access |
| NBN | National Broadband Network |
| NBP | Name Binding Protocol |