| Acronym | Definition |
|---|
| MSSS➣Ministère de la Santé et des Services Sociaux (French) |
| MSSS➣Malin Space Science Systems |
| MSSS➣Microsoft Security Summit |
| MSSS➣Maui Space Surveillance System |
| MSSS➣McMaster Social Sciences Society |
| MSSS➣Magnox Swarf Storage Silo (UK) |
| MSSS➣Multiple Sclerosis Society Scotland (UK) |
| MSSS➣Minimum Statistical Sample Size |
| MSSS➣My Super Sweet 16 (TV show) |
| MSSS➣Medication Safety Support Service (Canada) |
| MSSS➣Multi Stage Selector Switch |
| MSSS➣Manpower Staffing Standards System |
| MSSS➣Multi-Story Steel Structure |
| MSSS➣Modular System Software Specification |
| MSSS➣Maxtor Shared Storage Solution (networked data storage) |
| MSSS➣Mudgeeraba State Special School (Australia) |