| SR. No. | SHORT NAME | FULL NAME |
| 1 | CC | Carbon Copy |
| 2 | CAD | Computer Aided Design |
| 3 | CLASS | Computer Literacy And Studies In School |
| 4 | COBOL | Common Business Oriented Language |
| 5 | CD | Compact Disc |
| 6 | CMOS | Complementary Metal Oxide Semi Conductor |
| 7 | COMAL | Common Algorithmic Language |
| 8 | CPU | Central Processing Unit |
| 9 | CU | Control Unit |
| 10 | CRT | Cathod Ray Tube |
| 11 | CSS | Cascading Style Sheets |
| 12 | CUA | Control User Access |
| 13 | CTCP | Client-To- Client Protocol |
| 14 | CD-ROM | Compact Disc- Read Only Memory |
| 15 | CD-R | Compact Disc- Recordable |
| 16 | CD-RW | Compact Disc- Rewritable |
| 17 | CD-R/W | Compact Disc- Read/Write |
| 18 | CG | Computer Graphics |
| 19 | CGI | Common Gateway Interface |
| 20 | CIFS | Common Interface File System |
| 21 | COM | Common Object Mode |
| 22 | CDMA | Code Division Multiple Access |
| 23 | CLR | Common Language Runtime |
