| EACS | East African Community Services 
| Others |
| EACS | East Allen County Schools
| Others |
| EACS | Electronic Access Control Systems
| Others |
| EACS | Engineering Administration Computer Support
| Others |
| EACS | Engineering Aid Senior Chief Petty Officer
| Others |
| EACS | European Academy of Caring Science
| Others |
| EACS | European Accident Causation Survey
| Others |
| EACS | European AIDS Clinical Society
| Others |
| EACS | European Association for Chinese Studies
| Others |
| EACS | European Association of Chinese Studies
| Others |
| EACS | Expeditionary Aeromedical evacuation Crew member Support
| Others |