| Acronym | Definition |
|---|
| MSLS | Microsoft Line Services |
| MSLS | Master of Science in Library Science |
| MSLS | Maine Society of Land Surveyors (Augusta, ME) |
| MSLS | Multi-Service Launch System |
| MSLS | Medical School Lab Surge |
| MSLS | Multiple Single Levels of Security |
| MSLS | Master of Science in Legal Studies |
| MSLS | Marinesco-Sjogren-Like Syndrome |
| MSLS | Malaysian Student Leaders Summit (est. 2007) |
| MSLS | Multi-Slice Least-Squares (computer program to refine crystal structure to electron diffraction) |
| MSLS | Master's of Strategic Leadership towards Sustainability |