| Acronym | Definition |
|---|
| HAAC➣Heart of America Athletic Conference |
| HAAC➣Holland Area Arts Council (Holland, MI) |
| HAAC➣Hockey Altercation Action Camp (San Diego Ice Arena developmental hockey class) |
| HAAC➣Hispanic Alliance of Atlantic County |
| HAAC➣Hispanic Access Advisory Council |
| HAAC➣Halton Agricultural Advisory Committee |
| HAAC➣Harbour Authority Advisory Council |
| HAAC➣HRSA AIDS Advisory Committee |
| HAAC➣High Authority for Audiovisual Communications |
| HAAC➣Helicopter Air to Air Combat |
| HAAC➣High Altitude Athletics Club |
| HAAC➣Hungarian American Athletic Club |
| HAAC➣Hamilton Applied Astrophysics Club |