| Abbreviation | Definition |
|---|---|
| CMPA | Cincinnati Master Plumbers Association |
| CMPA | Croatian Meeting Professionals Association |
| CMRA | Calgary Motorcycle Roadracing Association |
| CMRA | Central Missouri Radio Association |
| CMRA | Connecticut Motorcycle Riders Association |
| CMSA | California Moving and Storage Association |
| CMSA | Central Maryland Soccer Association |
| CMSA | Chain Makers' and Strikers' Association |
| CMSA | Commercial Mortgage Securities Association |
| CMSCA | Central Mass Soccer Coaches Association |
| CMSCA | Central Missouri School Counselor Association |
| CMSCA | Charlotte Mecklenburg Scholastic Chess Association |
| CMSSA | Catholic Middle School Sports Association |
| CMTA | Connecticut Marine Trades Association |
| CMTRA | Cancer Molecular Therapeutics Research Association |
| CMWA | Canadian Masters Windsurfing Association |
| CMWA | Central Minnesota Wedding Association |
| CMWA | Coastal Mountain Wrestling Association |
| CNA | Colorado Nurses Association |
| CNA | CT Nurses Association |