| ECSD | East China School District
| Others |
| ECSD | East Coast Sour Diesel
| Others |
| ECSD | Edgefield County School District
| Others |
| ECSD | Edmonton Catholic School District
| Others |
| ECSD | Egyptian Council for Sustainable Development
| Others |
| ECSD | Elko County School District
| Others |
| ECSD | Emmetsburg Community School District
| Others |
| ECSD | Enhanced Circuit Switched Data
| Others |
| ECSD | Enhanced Csd
| Others |
| ECSD | Environmental Compliance Sustainability Department
| Others |
| ECSD | Escambia County School District
| Others |
| ECSD | Esparto Community Services District
| Others |
| ECSD | Evansville Community School District
| Others |