| ECTC | Earth Commission for Thermostatic Control (from environmentalist book The Weather Makers) | 地球恒温控制委员会（摘自环境学家著作《天气制造者》） |
| ECTC | Erosion Control Technology Council | 侵蚀控制技术委员会 |
| ECTC | Elizabethtown Community and Technical College (Elizabethtown, KY) | 伊丽莎白镇社区和技术学院（肯塔基州伊丽莎白镇） |
| ECTC | Electronic Components and Technology Conference | 电子元件和技术会议 |
| ECTC | Expected Cost to Company | 公司预期成本 |
| ECTC | Electronic Components & Technology Conference | 电子元器件及技术会议 |