- Cc's Coffee House
- CCS Presentation Systems
- CCX
- CD & L
- CD Connection
- CD Exchange
- CD Warehouse
- CDI
- CDI Corporation
- CDI Professional Services
- CDI Radiology
- CDM
- CDS
- CDS Office Technologies
- CECO Building Systems
- CECO Concrete Construction
- CED
- Cedar Chest
- Cedar Creek Apartments
- Cedar Crest Apartments
- Cedar Glen Apartments
- Cedar Grove Apartments
- Cedar Inn
- Cedar Lodge
- Cedar Park Apartments
- Cedar Run Apartments
- Cedar Valley Medical Specialists P C
- Cedar Village Apartments
- Cedars
- Cedars Apartments
- Cefcu
- CEI
- Celebration Station
- Celebrity Cleaners
- Cell City
- Cell Comm
- Cell Gallery
- Cell Phone Accessories
- Cell Phone City