- Colin Limpright
- Collin Kromke
- Collin Segelov
- ComBridges
- Common Sense Enterprise
- CommonPlaces e-Solutions, LLC
- CommuniDev
- Companion ICT
- CompareNetworks
- compass labs
- Completely Creative
- Comprehensive Design Services
- Compro
- Compu-Tech
- ComStar Media
- conceptTshirts.com
- Concurrent
- Condor Technology Associates
- Coney
- Connect Home Innovations Inc.
- Connerty Solutions