| Antonio CIBOLDI | ITA | 3 Races |
| Sorin CICAL | ROU | 21 Races |
| Susanna CICALI | ITA | 20 Races |
| Stefania CICALI | ITA | 3 Races |
| Nicolas CIGORRAGA | ARG | 3 Races |
| Maris CILINSKIS | LAT | 16 Races |
| Giacomo CINTI | ITA | 8 Races |
| Aurelian CIOCAN | ROU | 21 Races |
| Stefan CIODAR | ROU | 7 Races |
| Sabine CIRSA | LAT | 18 Races |
| Davis CIRSS | LAT | 12 Races |
| Florida CIUTA | ROU | 34 Races |
| Tadas CIZAS | LTU | 6 Races |
| L. CLARA DE LOS ANGELES | GUA | 3 Races |
| Robert Michael James CLARKE | CAN | 6 Races |