| Abbreviation | Definition |
|---|---|
| NSU | National Support Unit |
| NSUR | Non-Hardened Small Unit Radio |
| NSV | Net Shock Value |
| NSV | No Such Visitor |
| NSW | Naval Special Warfare |
| NSW | Navy Special Warfare |
| NSWC | Naval Surface Warfare Center |
| NSWC/DL | Naval Surface Weapons Center, Dahlgren Labs,VA |
| NSWCCSS | Naval Surface Warfare Center Coastal Systems Station |
| NSWCDD | Naval Surface Warfare Center Dahlgren Division |
| NSWCOM | Naval Special Warfare Command |
| NSWDG | United States Naval Special Warfare Development Group |
| NSWG | Naval Special Warfare Group |
| NSWL | Naval Surface Weapons Laboratory |
| NSWR | Naval Special Warfare Recruiting |
| NSWTE | Naval Special Warfare Task Element |
| NSWTF | Naval Special Warfare Task Force |
| NSWTG | Naval Special Warfare Task Group |
| NSWTU | Naval Special Warfare Task Unit |
| NSWU | Naval Special Warfare Unit |