| Abbreviation | Definition |
|---|---|
| HSAR | Hunterdon Somerset Association of REALTORS |
| HSBA | Harvard Square Business Association |
| HSBA | Hawaii State Bar Association |
| HSCA | Hawaiian Sailing Canoe Association |
| HSCA | Healthcare Supply Chain Association |
| HSDA | Hispanic Student Dental Association |
| HSDAA | Havana Silk Dog Association of America |
| HSEA | Hamilton Southeastern Education Association |
| HSEA | Hawaii Solar Energy Association |
| HSFA | Holocaust Survivors Friendship Association |
| HSFA | Houston Science Fiction Association |
| HSHA | Hawaii Speech and Hearing Association |
| HSHA | Haymarket Square Homes Association |
| HSHA | High Street Hill Association |
| HSIA | Hellenic Semiconductor Industry Association |
| HSMA | Health Service Management Association |
| HSMA | Health Services Management Association |
| HSMA | Hospitality Sales and Marketing Association |
| HSMA | Hotel Sales and Marketing Association |
| HSMAI | Hospitality Sales Marketing Association International |