| Acronym | Definition |
|---|
| MSSG➣Message |
| MSSG➣MEU Service Support Group (USMC) |
| MSSG➣Mississippi State Guard |
| MSSG➣MPEG Software Simulation Group |
| MSSG➣Microcomputer Support Services Group |
| MSSG➣Medical Student Survival Guide (Stanford University) |
| MSSG➣Management School St. Gallen (Switzerland) |
| MSSG➣Mass Storage Systems Group (National Center for Atmospheric Research) |
| MSSG➣Migraine Sufferers Support Group (New Zealand) |
| MSSG➣Microsoft Services and Solutions Group |