sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Health Care Advisors Association | *** |
| Hall County Airport Authority | ** |
| Heritage Currency Auctions of America | ** |
| Home Care Association of Alabama | ** |
| Home Care Association of Arkansas | ** |
| Hyattsville Community Artists Alliance | ** |
| Health Care Access Agreement | ** |
| Honors College Alumni Association | ** |
| Hernando County Aviation Authority | ** |
| Hillsborough County Airport Authority | ** |
| Haitian Cultural Arts Alliance | ** |
| Hungary Civil Aviation Authority | ** |
| Health Care Administrators Association | ** |
| Hill Country Archeological Association | ** |
| Hilltown Community Ambulance Association | ** |
| Houston Civic Art Association | ** |
| Hamilton County Artists Association | ** |
| Harvard College Alliance for Africa | ** |
| Health Care Availability Act | ** |
| Hastings College Alumni Association | ** |
| Heating and Cooling Association of Australia | * |
| Health Care Association of America | * |
| Hellenic Civil Aviation Administration | * |
| Historic Can Am Association | * |
| Health Care Advocacy Alliance | * |
| Hellenic Civil Aviation Authorities | * |
| Hendricks County Aviation Association | * |
| Hancock County Auditorium Associates | * |
| Houghton College Alumni Association | * |
| Hudson Canyon Access Area | * |
| Houston Civic Arts Association | * |
| Houston Corporate Athletics Association | * |
| Health Care Acquisition Activity | * |
| Heritage Checks African American | * |
| Home Care Association of America | * |
| Humber College of Applied Arts | * |