| ERO | European Racing Organisation | 欧洲赛车组织 |
| ERO | Errored input from other systems queue | 来自其他系统队列的错误输入 |
| ERO | Education Review Office (New Zealand) | 教育审查办公室（新西兰） |
| ERO | European Radiocommunications Office | 欧洲无线电通信办公室 |
| ERO | European Research Office | 欧洲研究办公室 |
| ERO | Electric Reliability Organization | 电气可靠性组织 |
| ERO | Engines Running On-Load/Off-Load | 发动机运转有/无负荷 |
| ERO | Emergency Response Organization | 应急响应组织 |
| ERO | Early Retirement Option | 提前退休选项 |
| ERO | Eastern Regional Office | 东部地区办事处 |
| ERO | Early Release Observation | 早期发布观察 |
| ERO | Edge Roll-Off (silicon wafer geometry) | 边缘滚落（硅片几何形状） |
| ERO | Emergency Response Operations | 应急响应操作 |
| ERO | Electronics Readiness Officer | 电子准备官 |
| ERO | Electronic Return Originator (US Internal Revenue Service) | 电子报税表发起人（美国国税局） |
| ERO | European-American Rights Organization (pro-white group) | 欧美人权组织（亲白人团体） |
| ERO | Earned Run Out (Pool; break and run table) | 挣到的用完（游泳池；休息和跑步表） |
| ERO | Employee Relations Officer | 员工关系官 |
| ERO | Enterprise Resource Optimization | 企业资源优化 |
| ERO | Emergency Restraining Order | 紧急约束令 |
| ERO | Event-Related Oscillations | 事件相关振荡 |
| ERO | Explicit Route Object (protocol) | 显式路由对象（协议） |
| ERO | Engineered Refueling Overhaul (US Navy) | 工程换料大修（美国海军） |
| ERO | Exponential Rate Optimal (test) | 指数速率最优（测试） |
| ERO | Equipment Repair Order (USMC) | 设备维修单（USMC） |