| OEL | organic electro-luminescent | 有机电镀冷光 |
| OEL | Organic Electron Luminescent | 有机电子发光 |
| OEL | Occupational Exposure Limit | 职业接触限值 |
| OEL | Original Equipment List | 原始设备清单 |
| OEL | Orel, Russia | 俄罗斯奥廖尔 |
| OEL | Ontario Electrical League | 安大略省电气联盟 |
| OEL | Open Ended Line (chemical process industry for a pipe open to the atmosphere) | 开放式管线（化学工艺工业中通向大气的管道） |
| OEL | Open End License | 开放式许可证 |
| OEL | Optical Evaluation Laboratory | 光学评估实验室 |
| OEL | Occupational Exposure Level | 职业接触水平 |
| OEL | Optional Endorsement Line (US postal service) | 可选背书行（美国邮政服务） |
| OEL | Opened End Line (of credit) | （信贷的）开放结束行 |
| OEL | Oracle Enterprise Linux | Oracle企业Linux |
| OEL | optional endorsement line | 可选背书行 |
| OEL | One EASE E-Link | 一个EASE E-Link |
| OEL | Old English Language | 古英语 |
| OEL | Office of Export Licensing | 出口许可办公室 |
| OEL | Operational Events List | 操作事件列表 |
| OEL | Organizational Equipment List | 部队装备表 |
| OEL | Original English Language | 原始英语语言 |
| OEL | Organic Electroluminescent (display technology) | 有机电致发光（显示技术） |
| OEL | Optical Engineering Laboratory (University of Warwick, UK) | 光学工程实验室（英国华威大学） |
| OEL | Over-Excitation Limiter | 过励磁限制器 |