| Cornell Enterprises | Maharashtra |
| CorpOne Group | Telangana |
| Corporate Soft Skills Pvt Ltd | |
| Coruscate Solutions Pvt Ltd | |
| Corusview IT Services Pvt Ltd | Madhya Pradesh |
| CoSara Diagnostics Pvt Ltd | |
| COSGrid | |
| Cosmic PV Power Ltd | |
| Cosmo Informatics Pvt Ltd | Uttar Pradesh |
| Cosmo Suite Pvt Ltd | |
| Cosmocloud Pvt Ltd | Uttar Pradesh |
| Cosmolance Tech Pvt Ltd | Uttar Pradesh |
| Cosmolink | |
| Cosmonet Solutions Pvt Ltd | |
| Cosmosoft Business Solutions Pvt Ltd | |
| Cosoft India Ltd | Tamil Nadu |
| COSYN Ltd | |
| Cotelligent India Pvt Ltd | Telangana |
| Cotex Technologies India Pvt Ltd | |
| Cotgin Analytics Pvt Ltd | |
| Cotton University | |
| Couchdeck Marketing Pvt Ltd | |
| Council of Indian Institute of Technology | |
| Council of National Institutes of Technology, Science Education and Research | |
| Council of Scientific & Industrial Research | |
| Coupomated | |
| Courseplay | Maharashtra |
| CouthIT | Telangana |
| Couture AI Pvt Ltd | Karnataka |
| Covacsis Technologies Pvt Ltd | |
| Covalense Digital Solutions Pvt Ltd | |
| CoworkZone | Telangana |
| COWRKS | Karnataka |
| Cozak Technologies | |
| Cozentus Technologies Pvt Ltd | Odisha |
| CPCL Polytechnic College | |
| CPJ Group of Institutions | |
| CPUTEK | |
| CQLsys | Punjab |
| CQS Training | Delhi |
| Crac Infotech Pvt Ltd | Delhi |
| Crafsol Technology Solutions Pvt Ltd | Maharashtra |
| CraftCoders Innovation Pvt Ltd | |
| Craftech 360 | |
| Craftiveweb | |
| Cranai Infotech, LLP | |
| Cranberry Communications | Delhi |
| Cranes Software International | Karnataka |
| Crantia Technologies | Kerala |
| Craq Digital Solutions | |