ACA
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| ACA | American Crystallographic Association | - | Computer Acronyms(common) |
| ACA | Airspace Control Authority - Airspace Co-ordination Area - A Current Affair | - | Astronomy |
| ACA | Atmospheric Chemistry Of Aerosols | - | Business and Finance |
| ACA | American Conservation Association | - | Business and Finance |
| ACA | Applied Combinatorial Analysis | - | Business and Finance |