| Cerrion AG | |
| Certifaction AG | |
| Certus Molecular Diagnostics AG | |
| CFI S.A. | Neuchâtel |
| CG24 Group AG | |
| CH Open | Bern |
| Chain4Travel AG | |
| ChainSecurity | |
| Chamber of Commerce Switzerland-Israel | |
| Cheye Visuelle Kommunikation | Grisons |
| chm-studio | Zurich |
| Chorus One | |
| Chrisign GmbH | Thurgau |
| Cicor Management AG | St. Gallen |
| Cilag AG | |
| Cilatus BioPharma Consulting AG | |
| CIS Pharma AG | |
| Cisel | Fribourg |
| Citizen Space Zurich | |
| Citrin Informatik GmbH | Zurich |
| Citycable | Vaud |
| Cleanmail AG | Vaud |
| Cleanmedia Mercurio | Bern |
| ClearSpace | |
| Clemap AG | |
| Clément Business Services | Vaud |
| Cloudrexx | Bern |
| cloudscale.ch Ltd | Zurich |
| CloudSigma | |
| CloudSigma Holding AG | Zurich |
| CLST | |
| CMO Consulting S.à.r.l. | Vaud |
| cnlab AG | St. Gallen |
| Cobalt | Fribourg |
| Cobra Software AG | Basel-Landschaft |
| CodX Software AG | Zurich |
| Cofex AG | Zurich |
| Cogestra-Laser S.A. | Geneva |
| Cogniweb S.A. | Valais |
| collectID AG | |
| Colyns Web Solutions | Bern |
| com2b.ch GmbH | Zurich |
| Comatic AG | Lucerne |
| ComatReleco Ltd | Bern |
| Combioxin S.A. | |
| ComBridge AG | St. Gallen |
| Comcepta AG | Basel-Stadt |
| Comerge AG | |
| Comfone AG | Bern |
| Comgate Solutions AG | Bern |