| Abbreviation | Definition |
|---|---|
| EBBS | European Brain and Behaviour Society |
| EBCS | English Bowls Coaches Society |
| EBFS | Economics Business and Finance Society |
| EBIS | European Brain Injury Society |
| EBOS | East Berkshire Operatic Society |
| EBPS | European Behavioural Pharmacology Society |
| EBRS | European Biological Rhythms Society |
| EBS | Early Book Society |
| EBSA | European Biophysical Societies' Association |
| EC | Engineering Council |
| ECAS | East Cascades Audubon Society |
| ECBA | European Countries Biologists Association |
| ECCAI | European Coordinating Committee for Artificial Intelligence |
| ECIS | Cumann Éire san Ochtú Céad Déag |
| ECIS | Cumann ire san Ocht Cad Dag |
| ECIS | Eighteenth-Century Ireland Society |
| ECIS | European Colloid and Interface Society |
| ECIS | European Colloid Interface Society |
| ECNS | EEG and Clinical Neuroscience Society |
| ECONOMICS | Excellent Conception Of Normal Or Maniacal Incidents Conditioning Society |