HHSA
| Acronym | Definition |
|---|---|
| HHSA | Health and Human Services Agency (California) |
| HHSA | Herrington Harbour Sailing Association (est. 1981; Herring Bay, MD) |
| HHSA | Handicapped Housing Society of Alberta (Alberta, Canada) |
| HHSA | Hospital and Health Services Administration (university curriculum) |
| HHSA | HoofBeats Horse Show Association |
| HHSA | Huron Hockey and Skating Association (East Tawas, MI) |