| ETO | Estimated Time Over | 预计飞越时间 |
| ETO | Early Termination Option | 提前终止选项 |
| ETO | estimated time of ovulation | 排卵估计时间 |
| ETO | Engineer-To-Order | 订单工程师 |
| ETO | Engineering Technology Office | 工程技术办公室 |
| ETO | Estimated Take-Off | 预计起飞时间 |
| ETO | Emergency Treatment Order | 紧急处理命令 |
| ETO | Essentials Tools And Objects | Essentials工具和对象 |
| ETO | Expeditionary Theater Opening (US Department of Defense) | 远征战区开幕（美国国防部） |
| ETO | Estimated Time of Overflight (air traffic management) | 预计飞越时间（空中交通管理） |
| ETO | Endorsed Training Organisation | 认可的培训组织 |
| ETO | Extended Time Observation | 延长时间观察 |
| ETO | Express Transportation Order | 快递运输订单 |
| ETO | Effects Tasking Order | 效果任务分配顺序 |
| ETO | Earned Time Off | 获得的休息时间 |
| ETO | Extended Technical Objective | 扩展技术目标 |
| ETO | Evasion Tactics Order | 躲避战术命令 |
| ETO | Estimated Time in Operation (aviation) | 预计运行时间（航空） |
| ETO | European Theater Of Operations | 欧洲战区 |
| ETO | Engineering-To-Order | 按订单设计 |
| ETO | Energy Trust of Oregon | 俄勒冈州能源信托 |
| ETO | Energy Trust of Oregon, Inc (Portland, OR) | 俄勒冈能源信托公司（俄勒冈州波特兰） |
| ETO | Expiration Term of Obligation | 义务到期期限 |
| ETO | Electronics Technology Office (DARPA) | 电子技术办公室（DARPA） |
| ETO | Earth To Orbit | 地球到轨道 |
| ETO | Extended Terminal Option (IBM - IMS software) | 扩展终端选项（IBM-IMS软件） |
| ETO | Electronic Trading Opportunities | 电子交易机会 |
| ETO | European Telecommunications Office | 欧洲电信局 |
| ETO | Equity Take Out (mortgages) | 股权提取（抵押贷款） |
| ETO | Excise & Taxation Officer (Pakistan) | 切除及税务官员(巴基斯坦) |