| Acronym | Definition |
|---|
| MMSS | Mathematical Methods in the Social Sciences |
| MMSS | Multi Media Speaker System |
| MMSS | Maritime Mobile Satellite Service |
| MMSS | Michigan Math and Science Scholars |
| MMSS | Membership Marketing Support Services |
| MMSS | Missile Management System |
| MMSS | Malaria Medicines & Supplies Services (WHO) |
| MMSS | Marketing Management Support System |
| MMSS | Monash Marketing Students Society |
| MMSS | Mast Mounted Sight System |
| MMSS | Master Milestone Summary Schedule |
| MMSS | Multi-Media and Strategic Services (Sprint) |
| MMSS | Multi-Media Speaker System |
| MMSS | Maintenance Management Support Services (Brighton, MI) |