| Acronym | Definition |
|---|
| NSSO➣National Sample Survey Organisation (India) |
| NSSO➣National Security Space Office |
| NSSO➣National Social Security Office (Belgium) |
| NSSO➣Name Service Search Option |
| NSSO➣Non-Statutory Stock Option (taxes) |
| NSSO➣National Serro Scotty Organization (est. 2005) |
| NSSO➣Non-Sexual Significant Other |