NSSS
| Acronym | Definition |
|---|---|
| NSSS | Nuclear Steam Supply System |
| NSSS | National Security Space Strategy (US DoD) |
| NSSS | Nantyr Shores Secondary School (Aclona, ON, Canada) |
| NSSS | Nursing Student Satisfaction Scale (study) |
| NSSS | National Structural Steelwork Specification |
| NSSS | North Surrey Secondary School (Surrey, BC, Canada) |
| NSSS | National Salmonella Surveillance System |
| NSSS | Naval Space Surveillance System |
| NSSS | National Strategic Satellite Communications System |