| Abbreviation | Definition |
|---|---|
| CXME | Cortex Mining And Exploration Co., Inc. |
| CXO | Chief Experience Officer |
| CXUS | Celexus, Inc. |
| CYBR | Cyber-Care, Inc. |
| CYC | Cincinnati Youth Collaborative |
| CYCH | Cybercash, Inc. |
| CYDC | County Youth Dance Company |
| CYI | Crivitz Youth Inc |
| CYPS | Cyclo3pss Corporation |
| CYTC | Cornwall Youth Theatre Company |
| CZL | Consolidated Zinc Ltd |
| CZMS | Carl Zeiss Medical Software GmbH |
| CZN | Combat Zone Network |
| D&B | Dun & Bradstreet |
| D&G | Displays and Graphics |
| D.L.R. | Deutsche Luft-Reederei (in Germany) German air shipping company |
| DAC | Decisive Analytics Corporation |
| DAC | Direct Action Company |
| DAC | Distributed Autonomous Company |
| DAC | Douglas Aircraft Corporation |