| Abbreviation | Definition |
|---|---|
| CSDBA | Central States Drag Boat Association |
| CSFL | Central States Football League |
| CSHL | Central States Hockey League |
| CSI | Central States Industrial |
| CSIC | Central States Intercollegiate Conference |
| CSMC | Confederate States Marine Corps |
| CSMF | Central States Marching Festival |
| CSN | Confederate States Navy |
| CSNS | Central States Numismatic Society |
| CSO | Central States of Omaha |
| CSSS | Community of Sahel-Saharan States |
| CSWP | Central States Wire Products |
| CT | Connecticut |
| CTO | Commercial Tax Officer |
| CUS | Central United States |
| CVA | California, Vegas, and Arizona |
| D | Detroit |
| DC | Denver, Colorado |
| DC | Detroit City |
| DC | District of Columbia |