| CA | Chartered Accountant |
| CAA | Citizen Amendment Act |
| CAB | Citizen amendment Bill |
| CACP | Commission for Agricultural costs and prices |
| CBI | Central Beuro of Investigation, Central Bank of India |
| CBSE | Central Board of Secondary Education |
| CC | Cubic Centimeter, Carbon Copy, Credit card, Country code |
| CCTV | Closed-Circuit Television |
| CD | Compact Disc |
| CDN | Content Delivery Network |
| CDS | Combined Defence Services |
| CIPET | Central Institute of Plastic Engineering and Technology |
| COMPUTER | Common Operating Machine Purposely used for Technological and Educational research |
| COPA | Computer Operator and Programming Assistant |
| COVID 19 | Coronavirus Disease |
| CPU | Central Processing Unit |
| CPWD | Central Public works Department |
| CRY | Child Rights and You |
| CSC | Common Service Centres |
| CSK | Chennai Super Kings |
| CSO | Central Statistics Office |
| CSP | Customer Service Point |
| CTO | Chief Technology Officer |
| CV | Curriculum Vitae |
