| Acronym | Definition |
|---|
| ECSS➣European College of Sport Science |
| ECSS➣European Cooperation for Space Standardization |
| ECSS➣European Computer Science Summit |
| ECSS➣Expeditionary Combat Support System |
| ECSS➣En Community Services Society (est. 2003; Singapore) |
| ECSS➣European Coronary Surgery Study |
| ECSS➣Electro Control Supervisory System |
| ECSS➣Exalted Carrier Single Sideband |
| ECSS➣EOS Common Spacecraft Specification |
| ECSS➣Enhanced Cruise Support Systems |
| ECSS➣Evolving Complex Software Systems (France) |
| ECSS➣Equipment Communication Subsystem |
| ECSS➣Economics and Commerce Student Society (Australia) |