| Acronym | Definition |
|---|
| HACCC➣Hawkeye Area Classic Chevy Club (Iowa) |
| HACCC➣Houston Area Consortium of Career Centers (Texas) |
| HACCC➣Hartford Area Child Care Collaborative (Connecticut) |
| HACCC➣Housing Authority of the County of Contra Costa (California) |
| HACCC➣Heroin Action Coalition of Carroll County (Maryland) |