| Acronym | Definition |
|---|
| EFCS➣European Federation for Company Sport (est. 1962; Switzerland) |
| EFCS➣Employees First, Customers Second (Vineet Nayar book) |
| EFCS➣Electronic Front Curtain Shutter (cameras) |
| EFCS➣École de Formation aux Carrières de Santé (French: Training School for Health Careers: Morocco) |
| EFCS➣Electronic Flight Control System |
| EFCS➣École de Formation aux Métiers de la Conduite et du Service (French: Trades Training School of Leadership and Service) |
| EFCS➣Electronic Fare Collection System (transport system; various locations) |
| EFCS➣European Federation of Cytology Societies |
| EFCS➣Earth Fixed Coordinate System |
| EFCS➣Electronic Filmless Camera System |
| EFCS➣Electronic Fingerprint Capture Station |
| EFCS➣Emergency Flight Control System (aviation; mechanical backups to hydraulic systems) |
| EFCS➣Electric Flight Control System |
| EFCS➣Extended Faceted Classification Schema |
| EFCS➣Electric Fence Compliance Services (South Africa) |