| IEP | Internal Education Program | 内部教育程序 |
| IEP | Internet Equipment Provider | 因特网设备供应商 |
| IEP | Irish Pound (old currency code; replaced by EUR) | 爱尔兰镑（旧货币代码；替换为欧元） |
| IEP | Intergovernmental Enterprise Panel | 政府间企业小组 |
| IEP | Internet Enabled Phone | 启用Internet的电话 |
| IEP | Initial Entry Party (first military HAZMAT reconnaissance in hot zone) | 首次进入党（第一次军事HAZMAT侦察在热区） |
| IEP | Integrated Engineering Process | 集成工程过程 |
| IEP | Independent Evaluation Plan | 独立评估计划 |
| IEP | Instituto das Estradas de Portugal | 葡萄牙埃斯特拉达斯研究所 |
| IEP | Intensive English Program | 强化英语课程 |
| IEP | Institut fÜr Europäische Politik | Institut fÜr Europäische Politik |
| IEP | International Education Policy | 国际教育政策 |
| IEP | Inverse Eigenvalue Problem | 逆特征值问题 |
| IEP | Internationally Educated Professional (Canada) | 国际教育专业人士（加拿大） |
| IEP | Initial Election Period (US Medicare) | 初始选举期（美国医疗保险） |
| IEP | Immunoelectrophoresis | 免疫电泳 |
| IEP | In English, Please | 请用英语 |
| IEP | Individual(ized) Education/al Program | 个人(可)教育/铝项目 |
| IEP | Individualized Education Planning | 个性化教育规划 |
| IEP | Individual Educational Plan | 个人教育计划 |
| IEP | Individual Educational Program | 个人教育计划 |
| IEP | Iso-Electric Point | 等电点 |
| IEP | Irish Punt | 爱尔兰镑 |
| IEP | Instruction Enhancement Program | 指令增强计划 |
| IEP | Index of Effective Participation | 有效参与指数 |
| IEP | Independent Educational Plan | 独立教育计划 |
| IEP | Individualized Educational Program | 个性化教育计划 |
| IEP | Individual Education Program | 个人教育计划 |
| IEP | Interpreter Education Program | 口译员教育计划 |
| IEP | Individual(ized) Education Plan | 个性化教育计划 |
| IEP | Innovative Employee Programs | 创新员工计划 |
| IEP | Inspection Éducation Primaire (French) | Inspection Éducation Primaire (French) |
| IEP | Installation Engineering Plan | 安装工程计划 |
| IEP | Internet Event Provider | Internet事件提供程序 |
| IEP | Institut d'Etudes Politiques (French) | Institut d 'Etudes Politiques(法国) |
| IEP | Integrated Engineering Program | 综合工程计划 |
| IEP | Instituto ElectrotÉcnico PortuguÊs | Instituto ElectrotÉcnico PortuguÊs |
| IEP | Immune Enhancement Project (San Francisco, CA) | 免疫增强项目（加利福尼亚州旧金山） |
| IEP | Immune Enhancing Peptide | 免疫增强肽 |
| IEP | International Education Programs (Jacksonville University, Jacksonville, FL) | 国际教育计划（佛罗里达州杰克逊维尔市杰克逊维尔大学） |
| IEP | Independent Energy Producers | 独立能源生产商 |
| IEP | Information Exchange Program/Project | 信息交换计划/项目 |
| IEP | Interior Equivalent Problem | 内部等效问题 |
| IEP | Interagency Ecological Program | 机构间生态计划 |
| IEP | International Exchange Program | 国际交流计划 |
| IEP | Individual Education Plan | 个人教育计划 |
| IEP | Individualized Education Program | 别化教育方案 |
| IEP | inhibin-enriched preparation | 抑制素富集制剂 |