| Acronym | Definition |
|---|
| ECMA | European Computer Manufacturers Association |
| ECMA | East Coast Music Awards (Canada) |
| ECMA | East Coast Music Association |
| ECMA | European Computer Manufacturer's Association |
| ECMA | European Carton Makers Association |
| ECMA | European Crisis Management Academy |
| ECMA | Engineering College Magazines Associated |
| ECMA | Electrification and Controls Manufacturers Association |
| ECMA | Egyptian Capital Market Association |
| ECMA | Ethiopian Community Mutual Association |
| ECMA | Erie Civic Music Association |
| ECMA | European Cigar Manufacturers Association (Eindhoven, The Netherlands) |
| ECMA | E-Currency Merchants Association |
| ECMA | East Coast Music Academy |
| ECMA | European Cylinder Makers Association |
| ECMA | European Catalysts Manufacturers Association |
| ECMA | Extended Constant Modulus Algorithm |
| ECMA | European Collectors and Modellers Association (Belgium) |