| EOCA | Early and Ongoing Collaboration and Assistance 
| Others |
| EOCA | Early Onset Cerebellar Ataxia
| Others |
| EOCA | Eastern Ontario Chess Association
| Others |
| EOCA | End of Course Assessments
| Others |
| EOCA | European Outdoor Conservation Association
| Others |
| EOCA | European Outdoor Conversation Association
| Others |
| EOCA | Evaluation of Central Administrators
| Others |
| EOCA | Evaluation Of Central Administrators (Ohio State University)
| Others |
| EOCA | Explosive Ordnance Clearance Agent
| Others |