| ETR | External Transfer Rate | 硬盘外部数据传输速率 |
| ETR | EXPECTED TIME OF REDELIVERY | 预计还船时间 |
| ETR | Easy-To-Reach (ITU-T) | 易于接触（ITU-T） |
| ETR | Energie-Transport-Reaktionsmodell (German: Energy Transport Reaction model) | 能量传输反应模型1（德语：能量传输反应模式） |
| ETR | Engine Transaction Report | 引擎事务报告 |
| ETR | Educator's Travel Resource | 教育工作者的旅游资源 |
| ETR | Estimated Time of Repair | 预计维修时间 |
| ETR | Estimated Time Of Recovery | 预计恢复时间 |
| ETR | Entergy Corporation | Entergy公司 |
| ETR | Early Token Release (FDDI) | 早期令牌发布（FDDI） |
| ETR | Engineering Technical Review | 工程技术审查 |
| ETR | End of Tour Report | 巡视结束报告 |
| ETR | Embedded Training Requirements | 嵌入式培训要求 |
| ETR | Electronically Transmitted Return (US IRS) | 电子传送报税表（美国国税局） |
| ETR | Effective Tax Rate | 有效税率 |
| ETR | Essex Terminal Railway | 埃塞克斯码头铁路 |
| ETR | Enjoy the Ride (travel agency) | 享受旅程（旅行社） |
| ETR | External Timer Reference | 外部计时器参考 |
| ETR | Estimated Time of Return/Repair | 评估的时间还/维修 |
| ETR | Extended Target Region | 扩展目标区域 |
| ETR | Eastern Test Range | 东部试验场 |
| ETR | Electronic Toll Road | 电子收费公路 |
| ETR | Evaporator Temperature Regulator | 蒸发器温度调节器 |
| ETR | estimated thyroid ratio | 估计甲状腺比率 |
| ETR | effective thyroxin(e)ratio | 有效甲状腺素（e）比 |
| ETR | Electronically Tuned Receiver | 电子调谐接收器 |
| ETR | Engineering Test Reactor | 工程试验反应堆 |
| ETR | Export Traffic Release | 导出流量释放 |
| ETR | Extra Testing Rule (reliability testing) | 额外测试规则（可靠性测试） |
| ETR | Express Toll Route | 快速收费路线 |
| ETR | Early to Rise (health e-zine) | 早起（健康电子杂志） |
| ETR | Electronic Tax Register | 电子税务登记 |
| ETR | Estimated Time of Return | 预计返回时间 |
| ETR | Enhanced Toll Restriction (Teltronics Vision PBX) | 增强型收费限制（Teltronics Vision PBX） |
| ETR | Estimated Time Remaining | 估计剩余时间 |
| ETR | Etruscan (linguistics) | 伊特鲁里亚语（语言学） |
| ETR | Ecological Tax Reform | 生态税收改革 |
| ETR | Experimental Test Reactor | 实验试验反应堆 |
| ETR | Equipamento Terminal de Rede (Portuguese) | Equipmento Terminal de Rede（葡萄牙语） |
| ETR | External Transfer Rate (Seagate) | 外部传输速率（Seagate） |
| ETR | Energy Trading & Risk | 能源贸易和风险 |
| ETR | Estimated Total Return | 预计总回报 |
| ETR | Expected to Realize | 预期实现 |
| ETR | Energy Transfer Ratio | 能量传递比 |
| ETR | Estimated Time of Restoration | 预计恢复时间 |
| ETR | Existing to Remain (architectural/design) | 现有的继续,建筑设计 |
| ETR | Expanded Test Report | 扩展测试报告 |
| ETR | Employment & Training Resources | 雇佣和培训资源 |
| ETR | Existing To Remain | 现有待保留 |
| ETR | Engineering Test Requirements | 工程测试要求 |