| Abbreviation | Definition |
|---|---|
| EPO | Entry Point Obscuring |
| EPOA | Eduring power of attorney |
| EPOA | Enduring Power of Attorney |
| EPOA | Enduring powers of attorney |
| EPOA | Ethiopian Power Of Attorney |
| EPP | Enforcement Program Plan |
| EPR | Evidence Processing Room |
| EPSS | Excluded Party Search System |
| EQS | Enforcement Query System |
| ER | Evaluate Refute |
| ER | Everybody Run |
| ER | Evidence Rules (court rules) |
| ER | Expert Resources |
| ERA | Educational Rights Agenda |
| ERA | Elements, Rules, and Applications |
| ERCA | Enforcement of Restrictions on Community Activities |
| ERD | Expected Release Date |
| ERE | Education Recovery and Enforcement |
| ERIS | Early Retirement Incentive Legislation |
| ERISA | Employee Retirement Income Security Act |