| Name | Sailor ID | Most Recent Declaration |
|---|---|---|
| Mike Clarke | RSAMC9 | 84.0kg - Amateur |
| Richard Clarke | CANRC5 | 98.0kg - Professional |
| Simon Clegg | GBRSC162 | 75.0kg - Amateur |
| Alec Coleman | CANAC45 | 75.0kg - Amateur |
| Rebecca Coles | GBRRC107 | 67.0kg - Professional |
| Killian Collins | IRLKC5 | |
| Phoebe Connellan | GBRPC84 | 58.0kg - Amateur |
| Cliodhna Connolly | IRLCC29 | 61.0kg - Amateur |
| Fionn Conway | TBC | |
| John Cooper | GBRJC231 | |
| Tomaz Copi | SLOTC2 | 77.0kg - Professional |
| Oscar Cordon | GBROC9 | |
| Julia Cornah | GBRJC238 | 71.0kg - Amateur |
| Alberto Corneli | ITAAC11 | 74.0kg - Amateur |
| Sam Cornfoot | GBRSC153 | 72.0kg - Professional |
| Ben Cornish | GBRBC34 | 92.0kg - Professional |
| Craig Cossar | GBRCC65 | 85.0kg - Amateur |
| Clare Costanzo | AUSCC23 | 63.0kg - Amateur |
| Chris Cough | RSACG2 | 80.0kg - Amateur |
| Chris Cousins | GBRCC26 | 75.0kg - Amateur |
| Vicky Cowan | GBRVC7 | 54.0kg - Amateur |
| Sam Cox | GBRSC138 | |
| Pete Croft | GBRPC70 | 82.0kg - Amateur |
| Luke Cross | GBRLC23 | 89.0kg - Professional |
| Gary Cullen | IRLGC |