| Abbreviation | Definition |
|---|---|
| NSBSC | National School Bus Standards Conference |
| NSC | New Student Conference |
| NSC | New Student Conferences |
| NSCJ | North Sea Conference and Journal |
| NSCJ | North Sea Conference Journal |
| NSEC | National Student Education Conference |
| NSEMC | IEEE National Symposium on ElectroMagnetic Compatibility |
| NSF | National Stakeholder Forum |
| NSIC | Northern Sun Intercollegiate Conference |
| NSLDA | IEEE Lasers & Electro-Optics Society Summer Topical on New Semiconductor Laser Devices and Applications |
| NSMC | National Student Media Conference |
| NSNC | Nova Scotia Naturopathic Conference |
| NSPC | National Schools Press Conference |
| NSPC | National Student Paediatric Conference |
| NSPC | NECA Safety Professionals Conference |
| NSPC | Nevada Suicide Prevention Conference |
| NSSC | National Student Show and Conference |
| NSSC | National Student Success Conference |
| NSSMIC | IEEE Nuclear Science Symposium and Medical Imaging Conference |
| NSSS | Nordic Student Singer Summit |