| PEP | phospholipid exchange protein | 磷脂转换蛋白 |
| PEP | primer extension preamplification | 引物延伸预扩增 |
| PEP | Photolithography and Etching Process | 光刻和腐蚀工艺 |
| PEP | PhosphoEnolPyruvate | 磷酸烯醇式丙酮酸 |
| PEP | Personal Equity Plan | 个人公平计划 |
| PEP | Peripheral Emulation Program | 外围仿真程序 |
| PEP | Performance Enhancement Program | 性能增强计划 |
| PEP | Peacekeeping English Project | 维和英语项目 |
| PEP | Politically Exposed Person(s) | 政治人物 |
| PEP | Potential Extramural Projects | 潜在的校外项目 |
| PEP | Performance Evaluation Program | 绩效评估计划 |
| PEP | Physics Enhancement Program | 物理增强计划 |
| PEP | Perlacher Einkaufspassagen (Munich shopping mall) | Perlacher Einkaufspasagen（慕尼黑购物中心） |
| PEP | Python Enhancement Proposal | 增强提案 |
| PEP | President's Escapee Program | 总统Escapee程序 |
| PEP | People's Empowerment Party (Trinidad and Tobago) | 人民的授权党(特立尼达和多巴哥) |
| PEP | Physician Enhancement Program | 医师增强计划 |
| PEP | Product Evaluation Procedure | 产品评估程序 |
| PEP | Postpartum Education for Parents | 父母产后教育 |
| PEP | Professional Enhancement Program | 专业增强计划 |
| PEP | Personal Effects Protection | 个人物品保护 |
| PEP | Preinstruction Emulation Program | 指令前仿真程序 |
| PEP | Primary Entry Point | 主要入口点 |
| PEP | Personal Equity Plan (UK) | 个人股本计划（英国） |
| PEP | Phased Execution Plan | 分阶段执行计划 |
| PEP | Partitioned Emulation Programming | 分区仿真编程 |
| PEP | Production Engineering & Planning | 制作工程及计划 |
| PEP | Plant Equipment Package | 工厂设备包 |
| PEP | Procurement Evaluation Panel | 采购评估小组 |
| PEP | Pole-Equator-Pole transects | 极赤道极横断面 |
| PEP | Patent Examination Procedure | 专利审查程序 |
| PEP | Proposal Evaluation Plan | 建议书评估计划 |
| PEP | Preferred Equipment Program | 首选设备计划 |
| PEP | PME (Professional Military Education) Exchange Program | 职业军事教育交流计划 |
| PEP | Private Energy Partners | 私人能源合作伙伴 |
| PEP | Parents for Enrichment Programs | 家长强化计划 |
| PEP | Provincial Emergency Program (British Columbia) | 省应急计划（不列颠哥伦比亚省） |
| PEP | Peirce Edition Project (Indiana University, Indianapolis) | 皮尔斯版项目（印第安纳大学，印第安纳波利斯） |
| PEP | Profitability Enhancement Program | 盈利能力增强计划 |
| PEP | Process Enhancement Program | 流程增强计划 |
| PEP | Programmable Entry Panel | 可编程进入面板 |
| PEP | Pulsed Energy Projectile | 脉冲能量弹丸 |
| PEP | Packetized Ensemble Protocol | 分组系统协议 |
| PEP | Positive Expiratory Pressure (respiratory medicine) | 呼气正压（呼吸内科） |
| PEP | Product Evolution Program (Cisco) | 产品发展计划（Cisco） |
| PEP | Performance Enhancement Proxy (TCP) | 性能增强代理（TCP） |
| PEP | Proposal Entry Processor | 建议输入处理器 |
| PEP | Personnel Exchange Program | 人员交流计划 |
| PEP | Performance Enhancement Protocol | 性能增强协议 |
| PEP | Producibility Engineering & Planning | 生产性工程及计划 |
| PEP | Positron Electron Project (experimental particle physics) | 正负电子项目（实验粒子物理学） |
| PEP | Parent Encouragement Program, Inc. | 家长鼓励计划公司。 |
| PEP | Program Execution Plan | 项目执行计划 |
| PEP | Pepsico, Inc. | 百事可乐公司。 |
| PEP | Performance Evaluation Plan | 绩效评估计划 |
| PEP | Predictability Engineering and Planning | 可预测性工程与规划 |
| PEP | Power Extension Package (NASA) | 动力扩展包（NASA） |
| PEP | Positive Expiratory Pressure | 呼气正压 |
| PEP | pyridylethyl-penicillamine | 吡啶乙基青霉胺 |
| PEP | polyestradiol phosphate | 聚雌二醇磷酸酯 |
| PEP | Psychoeducational Process | 心理教育过程 |
| PEP | Perimeter Email Protection | 外围电子邮件保护 |
| PEP | Public Employment Program | 公共就业计划 |
| PEP | Progressive Evaluation Process (Washington State DSHS term having to do with incapacity determinations) | 渐进式评估流程（华盛顿州DSHS术语与丧失工作能力判定有关） |
| PEP | Participatory Enterprise Planning | 参与式企业规划 |
| PEP | Public Enquiry Point | 公众咨询点 |
| PEP | Post Exposure Prophylaxis | 暴露后预防 |
| PEP | Parkinson's Educational Program | 帕金森教育计划 |
| PEP | Peak Envelope Power | 峰值包络功率 |
| PEP | Physcomitrella EST Programme | Physcomitrella EST计划 |
| PEP | Policy Enforcement Point | 策略实施点 |
| PEP | Propellants, Explosives, and/or Pyrotechnics | 推进剂、炸药、和/或烟火 |
| PEP | Process Enhancement Partners, Inc. (Silver Spring, MD) | Process Enhancement Partners，Inc.（马里兰州Silver Spring） |
| PEP | People Empowering People | 人民赋权人民 |
| PEP | Parents Encouraging Parents | 父母鼓励父母 |
| PEP | Pairwise Error Probability | 成对错误概率 |
| PEP | Power Entry Panel | 电源进入面板 |
| PEP | peptidase | 肽酶 |
| PEP | Protocol Extension Protocol | 协议扩展协议 |
| PEP | Promotion Evaluation Pattern | 晋升评估模式 |
| PEP | Productivity, Engineering and Planning | 生产力、工程和规划 |
| PEP | Psychoanalytic Electronic Publishing | 精神分析电子出版 |
| PEP | Primary Education Program | 小学教育计划 |
| PEP | Producibility Engineering and Planning | 可生产性工程与规划 |
| PEP | Post Exposure Preventive Treatment | 暴露后预防性治疗 |
| PEP | Paperless Environment Project | 无纸环境项目 |
| PEP | Poverty and Economic Policy | 贫困与经济政策 |
| PEP | Port Expansion Processor (SACCS) | 端口扩展处理器（SACCS） |
| PEP | Psychoeducational Profile | 心理教育概况 |
| PEP | Portable Energy Products, Inc. | 便携式能源产品公司。 |
| PEP | Positive Education Program (Ohio) | 积极教育计划（俄亥俄州） |
| PEP | Pepsico Inc (stock symbol) | 百事可乐公司（股票代码） |
| PEP | Protected Equity Participation | 受保护的股权参与 |
| PEP | Project Execution Plan | 项目执行计划 |
| PEP | Performance Enhancement Platoon (instuctional tool used at US Coast Guard Boot Camp) | 性能增强排（美国海岸警卫队训练营使用的指导工具） |
| PEP | Procurement Exception Processing | 采购异常处理 |
| PEP | Phthalate Esters Panel | 邻苯二甲酸酯面板 |
| PEP | Progressive Episcopalians of Pittsburgh | 匹兹堡进步圣公会教徒 |
| PEP | Performance Evaluation & Prediction | 绩效评估和预测 |