| ECSC | European Coal & Steel Community | 欧洲煤钢共同体及 |
| ECSC | Ecoscience Corporation | 生态科学公司 |
| ECSC | Ethical Culture School Camp (former children's camp, Cooperstown, New York) | 学校道德文化营前儿童营、陆军,纽约 |
| ECSC | Electric Cooperatives of South Carolina, Inc. | 南卡罗来纳州电力合作社。 |
| ECSC | European Economic and Social Committee (EU) | 欧洲经济和社会委员会（欧盟） |
| ECSC | Eastern Colleges Science Conference | 东部大学科学会议 |
| ECSC | European Customer Support Center | 欧洲客户支持中心 |
| ECSC | Environmental Control System Controller | 环境控制系统控制器 |
| ECSC | European Conference on Satellite Communications | 欧洲卫星通信会议 |
| ECSC | Ector County Senior Center | 埃克托县高级中心 |