| Abbreviation | Definition |
|---|---|
| HBSA | Hamilton/Burlington Society of Architects |
| HCAS | Harford County Astronomical Society |
| HCAS | Honors College Alumni Society |
| HCAS | Houston Cinema Arts Society |
| HCAS | Howard County Autism Society |
| HCBBS | Hermit Craft Big Brain Society |
| HCGS | Hamilton County Genealogical Society |
| HCLS | Human Centric Lighting Society |
| HCMS | Harris County Medical Society |
| HCMS | Honolulu County Medical Society |
| HCPMS | Harris County Podiatric Medical Society |
| HCS | ???????? ?a?d???????? ?ta??e?a |
| HCS | •»»·½¹º® š±Á´¹¿»¿³¹º® •Ä±¹Áµ¯± |
| HCS | Elle¯nike¯ Kardiologike¯ Etaireia |
| HCS | Ellenike Kardiologike Etaireia |
| HCS | Ellenike Kardiologike Etaireia |
| HCS | Hellenic Cardiological Society |
| HCSC | Hungarian Cultural Society Connecticut |
| HCSC | Hungarian Cultural Society of Connecticut's |
| HCWS | High Country Watermedia Society |