| Abbreviation | Definition |
|---|---|
| NAL | Novell Application Launcher |
| NAM | Network Addition Modification |
| NAM | Number Assignment Module |
| NAPS | Nimbus Automatic Programming System |
| NAS | NTFS (New Technology File System) Analog System |
| NASDAQM | Nasdaq for Microsoft |
| NASL | Nessus Attack Scripting Language |
| NASP | Nokia Asha Software Platform |
| NAT | National Application Transport |
| NATD | Network Address Translation Daemon |
| NATS | Next-generation Administration and Tracking System |
| NAV | Navision (Microsoft Dynamics NAV) |
| NBA | New Button Action |
| NBAC | Non-Blocking Atomic Commit |
| NBC | Non-Backwards Compatible |
| NBIS | NIST Biometric Image Software |
| NBNS | NetBIOS Name Service |
| NBP | NeoBook Professional |
| NBSP | Non-Breaking SPace |
| NBV | New Berkeley Version |