| ECAS | E-Commerce Association of Singapore 
| Others |
| ECAS | East Cascades Audubon Society
| Others |
| ECAS | East Coast Aviation Supply
| Others |
| ECAS | East County Animal Shelter
| Others |
| ECAS | Ecole Cartoucherie Animation Solidier
| Others |
| ECAS | Ecologically Conscious Architectural Studio
| Others |
| ECAS | Eight-Color Asteroid Survey
| Others |
| ECAS | Electrical Cable Assembly Set
| Others |
| ECAS | Electronic Client Application Status
| Others |
| ECAS | Electronic Course Action System
| Others |
| ECAS | Electronic Course Authorization System
| Others |
| ECAS | Electronically Controlled Air Suspension
| Others |
| ECAS | Embracing Children Adoption Services
| Others |
| ECAS | Emergency Committee of Atomic Scientists
| Others |
| ECAS | Emirates Conformity Assessment Scheme
| Others |
| ECAS | Emirates Conformity Assessment System
| Others |
| ECAS | ENES Climate Analytics Service
| Others |
| ECAS | Enterprise Cost Accounting System
| Others |
| ECAS | Environmental Compliance Assessment System
| Others |
| ECAS | EOIR Courts Appeals System
| Others |
| ECAS | Ethics Compliance and Audit Services
| Others |
| ECAS | Europe Conflict and Security
| Others |
| ECAS | European Cancer Anaemia Survey
| Others |
| ECAS | European Car Auction System
| Others |
| ECAS | European Cardiac Arrhythmia Society
| Others |
| ECAS | European Children Adoption Services
| Others |
| ECAS | European Cities of Advanced Sound
| Others |
| ECAS | European Citizen Action Service
| Others |
| ECAS | European Citizen Advice Service
| Others |
| ECAS | European Commission Authentication Service
| Others |
| ECAS | European Commission Authentication System
| Others |
| ECAS | European Conference on African Studies
| Others |
| ECAS | Executive Committee of the Academic Senate
| Others |
| ECAS | Experiment Computer Application Software
| Others |
| ECAS | Exploring Clouds for Acceleration of Science
| Others |