sort by Rank | Alpha
| Possible Meanings | Rank |
| Health Action Process Approach | ** |
| Home Life and Personal Adaptation | ** |
| Hayward Area Planning Association | ** |
| Houston Alumnae Panhellenic Association | ** |
| Heart of America Performing Arts | ** |
| Hawaii Association of Public Accountants | ** |
| 11a-homo-13-azaprostanoic acid | ** |
| Handicapped Adventure Playground Association | ** |
| Haitian American Parents Association | ** |
| Half Asian Peoples Association | ** |
| Health Access Privacy Alliance | ** |
| Hellenic American Psychiatric Association | ** |
| Hawaiian Aligned Portfolio Assessment | * |
| Habitat and Animal Protection Association | * |
| Haitian American Professional Association | * |
| Hawaii Arizona PMMIS Alliance | * |
| Health Action Promotion Association | * |
| Hmong American Peace Academy | * |
| Hawaii Aligned Portfolio Assessment | * |