NSIR
| Acronym | Definition |
|---|---|
| NSIR | NATO (North Atlantic Treaty Organization) Summit Independent Report |
| NSIR | Nuclear Security and Incident Response |
| NSIR | National Standard for Incident Recording |
| NSIR | Normalized Signal-To-Interference Ratio |
| NSIR | National Stable Isotope Resource |
| NSIR | Non-Specific Immune Response |