| City360KZ |
| Civica Election Services |
| Civica UK Ltd. |
| CK Asset Holdings Limited |
| CK Hutchison Holdings Limited |
| CK Noble (UK) Limited |
| Clarins Group |
| Classroom Publications Limited |
| Clays Ltd. |
| Clear Solutions International Limited |
| Clearspring Ltd |
| Clifford Chance LLP |
| Climate Impact Partners |
| ClimateWorks Foundation |
| Clinique |
| Club des Activités de Plongée de Bizerte |
| Clydesdale Bank plc |
| CMC Connect LLP |
| Co-operative Bank Holdings Limited |
| Co-operative Bank of Oromia |
| Co-operative Group Limited |
| Cobham Limited [was plc] |
| Coca-Cola Company, The |
| Coca-Cola FEMSA |
| Coca-Cola Hellenic Bottling Company |