NGSA
| Acronym | Definition |
|---|---|
| NGSA | Natural Gas Supply Association |
| NGSA | National Grammar Schools Association (England, UK) |
| NGSA | Nashua Girls Soccer Association (New Hampshire) |
| NGSA | Noblesville Girls Softball Association |
| NGSA | Neuroscience Graduate Students' Association |
| NGSA | Northrop Grumman, Saint Augustine |