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| Cadrexport com (30) | Cathay Pacific (63) |
| Cathay Pacific Catering Services (15) | Challenger (5) |
| Charterhouse Partnership (15) | Chartis (10) |
| Cheung Kong (Holdings) Limited (43) | Chief Securities Limited (6) |
| Chinese Estates Group (27) | Choosy Productions (6) |
| Cisco (8) | Cisco Systems (11) |
| City University of Hong Kong (25) | Citybus & NWFB (10) |
| CL Technical Services Ltd (41) | Community Development Initiative (5) |
| ConnectedGroup Limited (27) | Core Pacific (8) |
| Cotton on (20) | Covance (10) |
| CQrecruit (65) |