| IEPA | Independent Energy Producers Association (also seen as IEPA) | 独立能源生产者协会（也称为IEPA） |
| IEPA | Independent Energy Producers Association (also seen as IEP) | 独立能源生产商协会（又称IEP） |
| IEPA | Idl Expert Programmers Association | Idl专家程序员协会 |
| IEPA | International Early Psychosis Association | 国际早期精神病协会 |
| IEPA | Individual Educational Purchase Application | 个人教育购买申请 |
| IEPA | Illinois Environmental Protection Agency | 伊利诺伊州环境保护局 |
| IEPA | Independent Electron Pair Approximation | 独立电子对近似 |