| Acronym | Definition |
|---|
| HMSA➣Hawaii Medical Service Association |
| HMSA➣Hawthorne Math and Science Academy (Hawthorne, CA) |
| HMSA➣Hypermobility Syndrome Association |
| HMSA➣Hitachi Medical Systems America, Inc. |
| HMSA➣Health Manpower Shortage Area |
| HMSA➣Health Management Systems of America |
| HMSA➣Hmong Minnesota Student Association |
| HMSA➣Humane Methods of Slaughter Act of 1958 |
| HMSA➣Houston Masters Sports Association (Texas) |
| HMSA➣Humanities and Social Sciences |
| HMSA➣Historic Motor Sport Association |
| HMSA➣Hazardous Materials Site Assessment |
| HMSA➣Halo Messenger Subscription Aware |
| HMSA➣Hardware Manufacturers' Statistical Association |
| HMSA➣Healthcare Manpower Shortage Area |
| HMSA➣Hawk Mountain Sanctuary Association |
| HMSA➣Homewood Maitland Safety Association (Toronto, ON, Canada) |
| HMSA➣Seaman Apprentice, Hospital Corpsman Striker (USN/USNR Rating) |
| HMSA➣Hazardous Material Storage Area |
| HMSA➣Hot Mix Sand Asphalt |