| Acronym | Definition |
|---|
| MHSA➣Mental Health & Substance Abuse (various locations) |
| MHSA➣Master of Health Services Administration (graduate degree) |
| MHSA➣Montana High School Association |
| MHSA➣Mine Health and Safety Act (South Africa) |
| MHSA➣Mental Health Self Assessment (US DoD) |
| MHSA➣Mennonite Historical Society of Alberta (Canada) |
| MHSA➣Manufacturers' Health & Safety Association |
| MHSA➣Missouri Horse Shows Association |
| MHSA➣Maryland Horse Shows Association |
| MHSA➣Maryland High School Assessment |
| MHSA➣Mercure Hotel Sydney Airport (Australia) |