| Robert CLARKE | CAN | 6 Races |
| Robert Michael J. CLARKE | CAN | 3 Races |
| Rob CLARKE | CAN | 10 Races |
| Zane CLARKE | CAN | 7 Races |
| Tanisha CLAYTON | GBR | 1 Races |
| Jacob CLEAR | AUS | 23 Races |
| Samalulu CLIFTON | NZL | 5 Races |
| Rémi CLIN | FRA | 7 Races |
| Ryan COCHRANE | CAN | 25 Races |
| Daniela COCIU | MLD | 22 Races |
| Patricia COCO | ESP | 26 Races |
| Chrisjan COETZEE | RSA | 17 Races |
| Rebecca COLE | NZL | 11 Races |
| Janette COLIN | MEX | 1 Races |
| Stanton COLLINS | USA | 14 Races |