Politics and Business magazines
- Continuum Health Partners, Inc.
- Control Data Systems, Inc.
- Controladora Comercial Mexicana, S.A. de C.V.
- Controladora Mabe, S.A. de C.A.
- Conzzeta Holding
- Cooker Restaurant Corporation
- CoolBrands International Inc.
- CoolSavings, Inc.
- Coop Schweiz Genossenschaftsverband
- Coopagri Bretagne
- Coopers & Lybrand
- Copart Inc.
- Coppel, S.A. de C.V.
- Corbis Corporation
- Corby Distilleries Limited
- CoreStates Financial Corp
- Corinthian Colleges, Inc.
- Cornelsen Verlagsholding GmbH & Co.
- Corporación Geo, S.A. de C.V.
- Corporación Interamericana de Entretenimiento, S.A. de C.V