| Acronym | Definition |
|---|
| HCAA➣Health Care Administrators Association (Reston, VA) |
| HCAA➣Hellenic Civil Aviation Authority (Greece) |
| HCAA➣Horizon Central Athletic Association (Canada) |
| HCAA➣Hillsborough County Aviation Authority (Florida) |
| HCAA➣Hebrew Christian Alliance of America |
| HCAA➣National CPA Health Care Advisors Association |
| HCAA➣High-Capacity Air-To-Air Missile (Ace Combat game) |
| HCAA➣Health Care Accountability Act |
| HCAA➣Heartland Community Action Agency (Minnesota) |