| Abbreviation | Definition |
|---|---|
| HAAC | Hmong American Alliance Church |
| HAAM | Health Alliance for Austin Musicians |
| HAART | HIV AIDS Alliance for Region Two |
| HACE | Hispanic Alliance for Career Enhancement |
| HACO | Harborfields Alliance For Community Outreach |
| HAEE | Hampton Alliance for Educational Excellence |
| HAGC | Health Alliance of Greater Cincinnati |
| HAH | Heartland Alliance Health |
| HAH | Horticultural Alliance of the Hamptons |
| HAI | Health Alliance International |
| HAMSA | Hands Across the Mideast Support Alliance |
| HANA | Humber All Nations Alliance |
| HANC | Health Alliance of Northern California |
| HANJ | Hospital Alliance of New Jersey |
| HANNA | Housing Agencies National Network Alliance |
| HAPI | Humanist Alliance Philippines International |
| HAPPY | Heathcote Alliance for Preserving Prosperity and Youth |
| HARAH | Hampshire Alliance for Rural Affordable Housing |
| HCAP | Health Care Alliance Pool |
| HEA | Horizon Education Alliance |