Below are a listing or prominent businesses beginning with the letter C.
- Camden Treatment Associates
- Chesapeake Energy
- Cadbury
- Commonwealth Edison
- CHG Healthcare Services, Inc.
- CarMax Inc.
- Cardinal Health
- Chrysler Corporation
- Colgate-Palmolive
- CapitalSource Inc.
- Century 21 Real Estate LLC
- Coinstar Inc.
- Capital One Financial
- Cars.com
- Coca-Cola Company, The
- ConocoPhillips
- Citi Habitats
- CA Technologies
- Contran Corporation
- Chanel S.A.
- Coventry Health Care
- Chevron Corporation
- Coldwell Banker Timberland Properties
- Capital Cities/ABC
- CareOne LLC
- Castle Harlan Inc.
- Center for Discovery
- Codesmart Group, The
- Cameleon Software
- Comodo
- Citrix
- CDM Smith
- Covidien
- CareFusion
- Clayton, Dubilier & Rice
- Compass Automation