| Abbreviation | Definition |
|---|---|
| CSEA | Certified Small Enterprise Advisor |
| CSI | Confusing Set of Initials |
| CSI | Consulting Services Inc |
| CSLC | Certified Sustainable Lighting Consultant |
| CSNC | Certified Sports Nutrition Consultant |
| CSQC | Consulting Surveyors Quality Control |
| CSR | Consulting Services and Research |
| CSSC | Consulting Services Support Corporation |
| CSSCS | Computer Security Software Consulting Services |
| CTA | Consulting Training Agency |
| CTA | Consulting & Training Agency |
| CTMPS | Consulting Technology Management Professional Services |
| CTP | Consultant Training Program |
| CTSI | Consulting Testing Services Inc |
| CWI | Corrective Work Instruction |
| CWR | Consulting Within Reach |
| CXS | Customer Experience Strategist |
| CYA | Consulting Youth Advisors |
| DAC | Art Consulting |
| DACC | Data Analytics Consulting Club |