| Ceibal Centre for Support to Childhood and Adolescent Education |
| Centenary Rural Development Bank Ltd |
| Centerbase International Communications Ltd |
| Central University of Technology, Free State |
| Centre for Communication and Development of Bangladesh (CCD Bangladesh) |
| Centre for Contemporary Arts |
| Centre for Cultural Heritage Preservation |
| Centre for the Moving Image |
| Centre of Excellence for Rural Development |
| Centrica Plc |
| Centro de Diseño y Comunicación, S.C. |
| Century City International Holdings Limited |
| Certis Lanka Group |
| Chalo HQ Limited |
| Chamber of Commerce, Industry & Agriculture of Tripoli & North Lebanon |
| Chanel Limited |
| Change Please CIC |
| Charity Bank Ltd |
| Charity Projects (Comic Relief) |
| Charles Jobson |
| Charter House Productions Limited |
| Chelsea Building Society |
| Chemonics International |
| Chengdu Laizhe Education and Technology Co., Ltd. |
| Chevron Corporation |