| COEA | China Overseas Exchange Association | 中国海外交流协会 |
| COEA | Council of Europe Alliance | 欧洲委员会联盟 |
| COEA | Church of Enlightened Assumption | 启蒙假设教会 |
| COEA | Cost & Operational Effectiveness Analysis | 成本及作战效能分析 |
| COEA | Certificate of Educational Achievement | 教育成就证书 |
| COEA | Cost and Operational Effectiveness Analysis | 成本和运营效率分析 |