| Term | Full Form | Category |
|---|---|---|
| EFCS | Earth Fixed Coordinate System | Others |
| EFCS | Electronic Filmless Camera System | Others |
| EFCS | Electronic Fingerprint Capture Station | Others |
| EFCS | Electronic First Curtain Shutter | Others |
| EFCS | Electronic Flight Control System | Others |
| EFCS | Electronic flight control systems | Others |
| EFCS | Euclid Friendly Computer Service | Others |
| EFCS | European Federation For Company Sport | Others |
| EFCS | European Federation of Cytology Societies | Others |
| EFCS | European Funny Car Series | Others |