| ECCO | European Community Chamber Orchestra | 欧共体室内乐队（团） |
| ECCO | Evolutionary Command/Control Operations | 进化的指挥和控制操作 |
| ECCO | European Cannabis Consumers Organisation (founded in Amsterdam, 1994) | 欧洲大麻消费者组织（1994年成立于阿姆斯特丹） |
| ECCO | Electronics Controls Company | 电子控制公司 |
| ECCO | European Crohn's and Colitis Organization (Vienna, Austria) | 欧克罗恩和肠炎组织(奥地利的维也纳) |
| ECCO | Education Center for Community Organizing (New York, NY) | 社区组织教育中心（纽约州纽约市） |
| ECCO | Employee Customer Concerns Office | 员工客户问题办公室 |
| ECCO | European Confederation of Conservator-Restorers' Organisation | 欧洲联盟”的组织Conservator-Restorers |
| ECCO | Elections Committee of the County of Orange | 奥兰治县选举委员会 |
| ECCO | Evaluation Of Capital Creation Options | 资本创造选项评估 |
| ECCO | Earthcare Company | Earthcare公司 |
| ECCO | East Central Community Organization | 中东社区组织 |
| ECCO | Extreme Championship Combat Organization | 极限锦标赛战斗组织 |
| ECCO | Earth Coincidence Control Office | 地球重合控制办公室 |
| ECCO | East Calhoun Community Organization | 东卡尔霍恩社区组织 |
| ECCO | Estimating the Circulation and Climate of the Ocean | 估算海洋环流和气候 |