| Acronym | Definition |
|---|
| MMSL➣Mining and Mineral Sciences Laboratories (CANMET) |
| MMSL➣Manitoba Major Soccer League (Canada) |
| MMSL➣Magic Mist Services Limited (Trinidad & Tobago, West Indies) |
| MMSL➣Mobile and Media Systems Lab (Hewlett-Packard) |
| MMSL➣Metropolitan Media Softball League (Washington, DC) |
| MMSL➣Miniaturized Micro-Strip Line |
| MMSL➣Major Medical Sick Leave (Fort Worth, TX) |