NSIE
| Acronym | Definition |
|---|---|
| NSIE | Network Security Information Exchange |
| NSIE | Non-Singular Isothermal Ellipsoid (astrophysics) |
| NSIE | National Safety Information Exchange (Port Richey, FL) |
| NSIE | North Seattle Institute of English (North Seattle Community College; Seattle, WA) |
| NSIE | National Society of Indian Engineers |
| NSIE | Naprawa Samochodowych Instalacji Elektrycznych (Polish: Automotive Repair Electrical Systems) |