| Abbreviation | Definition |
|---|---|
| COAA | Clarington Older Adult Association |
| COAA | Code Officials Association of Alabama |
| COAA | Code Officials Associations of Alabama |
| COAB | Cable Operators Association of Bangladesh |
| COAG | Constitutional Officers Association of Georgia |
| COAI | Cellular Operators Association of India |
| COAM | Campground Owners Association of Montana |
| COAM | Composting and Organics Association of Missouri |
| COASA | Coroners Officer and Staff Association |
| CODISIA | Coimbatore District Small Industries Association |
| CODSIA | Council of Defense and Security Industry Associations |
| COFA | Central Ohio Flute Association |
| COFA | Compact of Free Association |
| COFA | Compacts of Free Association |
| COGUA | Canadian Off Grid Utilities Association |
| COHA | Central Okanagan Hospice Association |
| COLA | Central Oregon Llama Association |
| COLDA | City Of London Darts Association |
| COLGA | City Of Leicester Governors Association |
| COMEA | Central Oregon Music Education Association |