| DCOA | Director Of Christian Outreach Association | 基督教外展协会主任 |
| DCOA | Delaware Correctional Officers Association | 特拉华州惩教官员协会 |
| DCOA | Deregulation and Contracting Out Act 1994 (United Kingdom) | 1994年《放松管制和外包法》（英国） |
| DCOA | Dynamic Change of Address | 地址的动态更改 |
| DCOA | Deregulation And Contracting Out Act | 《解除管制和外包法》 |
| DCOA | Duplication Centers Of America | 美国复制中心 |
| DCOA | District of Columbia Office off Aging | 哥伦比亚特区老龄办公室 |
| DCOA | Design Council Of America | 美国设计委员会 |