| Acronym | Definition |
|---|
| NSW | New South Wales (Australian state) |
| NSW | Nintendo Switch (gaming console) |
| NSW | Naval Special Warfare |
| NSW | Norton SystemWorks (Symantec utility software) |
| NSW | National Science Week |
| NSW | Norton System Works |
| NSW | National Software Works |
| NSW | Nebelscheinwerfer (German: Fog-Lamp) |
| NSW | Natural Seawater |
| NSW | Nippon Systemware Co. Ltd. |
| NSW | Network Setup Wizard |
| NSW | No Significant Weather (meteorology/aviation) |
| NSW | Neighborhood Security Watch (Hawaii) |
| NSW | Non-Secure Warning |
| NSW | Newark Symphonic Winds (Newark, CA) |
| NSW | New Swappers Welcome (friendship book) |
| NSW | Novell Script for NetWare |
| NSW | Non-Secure Switch |