| 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 |