HMCA
| Acronym | Definition |
|---|---|
| HMCA | Health and Medical Care Archive (Inter-University Consortium for Political and Social Research; University of Michigan) |
| HMCA | Health Management Corporation of America (Melville, NY) |
| HMCA | High Moorland Community Action (UK) |
| HMCA | Hispanic Marketing and Communication Association (Miami, FL) |
| HMCA | Harvard Model Congress Asia (Harvard University; Cambridge, MA) |
| HMCA | Her Majesty's Clockwork Army (band) |