| Acronym | Definition |
|---|
| EACS | East Allen County Schools (New Haven, IN) |
| EACS | European AIDS Clinical Society (France) |
| EACS | Electronic Access Control System (various organizations) |
| EACS | European Association of Chinese Studies |
| EACS | Esperance Anglican Community School (Australia) |
| EACS | École des Arts Chinois du Spectacle (French: School of Chinese Performing Arts) |
| EACS | Expeditionary Air Control Squadron (US Air Force) |
| EACS | European Association for the Control of Structures |
| EACS | Extended Area Calling Service (telephones) |
| EACS | Senior Chief Engineering Aide (Naval Rating) |
| EACS | Emergency Air Cleaning System |
| EACS | EP/EO Account Control System |