| Acronym | Definition |
|---|
| HHSD➣Haddon Heights School District (New Jersey) |
| HHSD➣Health and Human Services Department (various locations) |
| HHSD➣Hendrick Hudson School District (Montrose, NY) |
| HHSD➣Human Health Sciences Division (USDA) |
| HHSD➣Home Health Services of Dallas (Dallas, TX) |