| Acronym | Definition |
|---|
| QACA➣qualified automatic contribution arrangement (US IRS) |
| QACA➣Quedgeley Area Conservation Association (Quedgeley, Gloucester, England, UK) |
| QACA➣Qatar Authority for Charitable Activities |
| QACA➣Quality Assurance Consulting Associates (Colorado) |
| QACA➣Quantitative Antiglobulin Consumption Assay (clinical medicine) |