| Abbreviation | Definition |
|---|---|
| DSOA | Dubai Silicon Oasis Authority |
| DTA | Duluth Transit Authority |
| DTCA | Dhaka Transport Coordination Authority |
| DURA | Denver Urban Renewal Authority |
| EAA | Edwards Aquifer Authority |
| EAA | Estate Agents Authority |
| EAPA | Enforcement And Problem Authority |
| EAT | Expert Authority and Trustworthiness |
| EAT | Expertise Authority and Trust |
| EAT | Expertise Authority and Trustworthiness |
| EATO | Enterprise Authority To Operate |
| EAWA | Elizabethtown Area Water Authority |
| EBA | EU Banking Authority |
| EBDA | East Bay Dischargers Authority |
| EBTA | Eufaula Barbour Transit Authority |
| ECAA | Egyptian Civil Aviation Authority |
| ECAA | Ethiopian Civil Aviation Authority |
| ECRA | Electricity Cogeneration Regulatory Authority |
| ECVA | Elko Convention and Visitors Authority |
| EDA | Engineer's Duties and Aurthority |