| Abbreviation | Definition |
|---|---|
| EFCO | Economy Forms Corporation |
| EFCS | European Federation For Company Sport |
| EFD | Engineered Films Division |
| EFEI | EarthFax Engineering Incorporated |
| EFF | Electronic Font Foundry |
| EFF | Electronic Font Foundry (Company) |
| EFG | Enterprise Finance Guarantee |
| EFG | European Financial Group |
| EFHL | Elizabeth Finn Homes Ltd |
| EFI | Educational Foundation Inc |
| EFI | Energy Federation Inc |
| EFI | Enterprise Florida Inc |
| EFI | Exceptional Foresters Inc |
| EFIG | Education Finance Incentive Grants |
| EFL | Esopus Foundation Ltd |
| EFQM | European Foundation for Quality Management |
| EFRA | Eurpoean Flame Retardants Association |
| EFRC | Emirates Fire and Rescue Company |
| EFRC | Energy Fusion Research Corp |
| EFSA | European Fiscal Standards Association |