| Abbreviation | Definition |
|---|---|
| CMFA | Connection Management Functional Area |
| CMIF | Central Minnesota Initiative Fund |
| CMS | Centers for Medicare & Medicaid Services |
| CMS | Children's Medical Services |
| CMU | Concrete Masonry Units |
| CMU | Couverture Maladie Universelle |
| CN | Colts Neck |
| CNH | Central Neighbourhood House (Toronto, ON) |
| CNTG | Confederation Nationale Des Travailleurs De Ginee |
| CNTOWER | Canadian National Tower |
| CoA | City of Atlanta |
| COA | City Of Austin |
| COA(A) | Code Of Alabama (Amended) |
| COAG | County Officers Association Of Georgia |
| COAST | Coalition of Australian States and Territories |
| COB | California Oregon Border |
| COCC | Connecticut Online Computer Center |
| COD | City Of Deland |
| CODES | Crash Outcome Data Evaluation System |
| COF | child-occupied facility |