| 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 |