| Name | Sailor ID | Most Recent Declaration |
|---|---|---|
| Cliodhna Connolly | IRLCC29 | 61.0kg - Amateur |
| Giacomo Conti | ITAGC219 | 85.0kg - 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 |
| Pedro Costa | PORPC24 | 74.0kg - Professional |
| 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 | 85.0kg - Professional |
| James Crossley | GBRJC205 | 65.0kg - Amateur |
| Csaba Csetényi | HUNCC6 | 88.0kg - Amateur |
| Gary Cullen | IRLGC | |
| Gary Cullen | IRLGC25 | 82.0kg - Amateur |
| Charlie Cumbley | CCGBR18 | 85.0kg - Professional |
| Pete Cumming | GBRPC82 | 87.0kg - Professional |