| Acronym | Definition |
|---|
| NSSM➣Non-Sucking Service Manager (open-source software) |
| NSSM➣National Security Study Memorandum |
| NSSM➣National Standard Systems Network |
| NSSM➣NATO Sea Sparrow Missile |
| NSSM➣Network Systems & Security Management |
| NSSM➣National Sure Start Month (UK; childcare program) |
| NSSM➣Nursing Student Success Made Incredibly Easy (book) |
| NSSM➣Navy Spread Spectrum Modem |