| CPU | Central Processing Unit | மைய செயலகம் | Computer and Internet |
| CAD | Computer-Aided Design | - | Computer and Internet |
| CC | Carbon Copy | - | Computer and Internet |
| CCD | Charged Coupled Device | - | Computer and Internet |
| CD | Compact Disc | - | Computer and Internet |
| CD-R | Compact Disc Recordable | - | Computer and Internet |
| CD-ROM | Compact Disc Read-Only Memory | - | Computer and Internet |
| CD-RW | Compact Disc Re-Writable | - | Computer and Internet |
| CDMA | Code Division Multiple Access | - | Computer and Internet |
| CGI | Common Gateway Interface | - | Computer and Internet |
| CISC | Complex Instruction Set Computing | - | Computer and Internet |
| CMOS | Complementary Metal Oxide Semiconductor | - | Computer and Internet |
| CMYK | Cyan Magenta Yellow Black | - | Computer and Internet |
| CPA | Cost Per Action | - | Computer and Internet |
| CPC | Cost Per Click | - | Computer and Internet |
| CPL | Cost Per Lead | - | Computer and Internet |
| CPM | Cost Per 1,000 Impressions | - | Computer and Internet |
| CPS | Classroom Performance System | - | Computer and Internet |
| CRM | Customer Relationship Management | - | Computer and Internet |
| CRT | Cathode Ray Tube | - | Computer and Internet |
| CSS | Cascading Style Sheet | - | Computer and Internet |
| CTP | Composite Theoretical Performance | - | Computer and Internet |
| CTR | Click-Through Rate | - | Computer and Internet |
