| Acronym | Definition |
|---|
| MSHS | Mount Si High School (Washington) |
| MSHS | Manitou Springs High School (Manitou Springs, CO) |
| MSHS | Mahomet-Seymour High School (Mahomet, IL) |
| MSHS | Mayo School of Health Sciences (Rochester, MN) |
| MSHS | Marvel Super Hero Squad (video game) |
| MSHS | Maine South High School |
| MSHS | Master of Science in Human Services |
| MSHS | Master of Science Health Science (degree) |
| MSHS | Minnesota State Horticultural Society |
| MSHS | Merrimac State High School (Queensland, Australia) |
| MSHS | Miami State High School (Gold Coast, Australia) |
| MSHS | Master of Science in Healthcare Simulation (various schools) |
| MSHS | Manila Science High School |
| MSHS | Maris Stella High School (Singapore) |
| MSHS | Maple Shade High School (New Jersey) |
| MSHS | Michigan State Horticulture Society |
| MSHS | Maryland Steam Historical Society, Inc. (Upperco, MD) |