| CompuMar | Buenos Aires |
| Compumundo, S.A. | Buenos Aires |
| Computec, S.R.L. | Buenos Aires |
| Comsur S.R.L. | Buenos Aires |
| Comunicarte | Buenos Aires |
| Concepto Sur | Buenos Aires |
| Conexia | |
| Conexión Startup | Buenos Aires |
| ConsisNET S.A. | Buenos Aires |
| Consultex Informatica | Buenos Aires |
| Consultoría Global S.A. | Buenos Aires |
| Consutling Services S.R.L. | Buenos Aires |
| Control Computers | Buenos Aires |
| Control Soft | Buenos Aires |
| ControlNet | Córdoba |
| Convergencia Latina | Buenos Aires |
| CookUnity | Buenos Aires |
| Cooperativa Telefónica Carlos Tejedor | Buenos Aires |
| Cooperativa Telefonica de Pinamar Ltda | Buenos Aires |
| Cooperativa Telefónica de San Martin de Las Escobas | Buenos Aires |
| Cooperativa Telefónica de Villa Gobernador Gálvez Ltda | Santa Fe |
| Córdoba Software | Córdoba |
| Corpax Hosting | Buenos Aires |
| Corporación Cápsula | Buenos Aires |
| Cosgaya | Buenos Aires |
| CosmicWeb | Buenos Aires |
| Cosmos Software | Buenos Aires |
| Cosys | Buenos Aires |
| COYA Sistemas | Buenos Aires |
| CQR Sistemas S.R.L. | Buenos Aires |
| Creadores de Sitios | Buenos Aires |
| Crear Sitio Web | Buenos Aires |
| Crearsitioweb | Buenos Aires |
| Creatribe | Buenos Aires |
| Credencial Argentina S.A. | Buenos Aires |
| Cryolla Diseño | Buenos Aires |
| CryptoForge | Buenos Aires |
| CScom | Buenos Aires |
| CTN Web Solutions | Buenos Aires |
| CTT Soluciones Audiovisuales | Buenos Aires |
| CUOMA Design Studios | Buenos Aires |
| Cyberdyne | Buenos Aires |
| Cyberofice | Buenos Aires |
| CyC Computacion | Buenos Aires |
| Cygnus Informática, S.R.L. | Buenos Aires |
| Dacas S.A. | Buenos Aires |
| Dactilografa | Buenos Aires |
| Dale!Diseño | Buenos Aires |
| Damian de Luca | Buenos Aires |
| Darc Studio | |