HSSA
| Acronym | Definition |
|---|---|
| HSSA | Humane Society of Southern Arizona (Tucson, AZ) |
| HSSA | High School Sports Association |
| HSSA | Health and Social Services Authority (UK and Canada) |
| HSSA | Hydraulic Shock and Sway Arrestor (Bergen-Paterson) |
| HSSA | Hyland Ski & Snowboard Area (Bloomington, MN) |
| HSSA | Health Service Support Area (US Army) |
| HSSA | High Speed Switching Accessory |