| # | Company name | Role | # of projects |
|---|---|---|---|
| 21 | Cáceres CB | Sports team | 1 |
| 22 | Cáceres Esporte Clube | Sports team | 1 |
| 23 | Cachoeira Futebol Clube | Sports team | 1 |
| 24 | Cachoeiro Futebol Clube | Sports team | 1 |
| 25 | Cadiz CF | Sports team | 1 |
| 26 | Caernarfon Town | Sports team | 1 |
| 27 | Cafeteros de Córdoba | Sports team | 1 |
| 28 | Cag. de Oro-Misamis Oriental | Sports team | 1 |
| 29 | Cagliari Calcio | Sports team | 1 |
| 30 | Caiçara Esporte Clube | Sports team | 1 |
| 31 | Caicó Esporte Clube | Sports team | 1 |
| 32 | Caïman de Douala | Sports team | 1 |
| 33 | Caimanes de Barranquilla | Sports team | 1 |
| 34 | Cairns Taipans BC | Sports team | 1 |
| 35 | Cal Poly Mustangs | Sports team | 1 |
| 36 | Calabar Rovers | Sports team | 1 |
| 37 | Calais RUFC | Sports team | 1 |
| 38 | Calcio Catania | Sports team | 1 |
| 39 | Calcio Lecco | Sports team | 1 |
| 40 | Calcio Monza | Sports team | 1 |