| Registered Name | Owner / Club | Status |
|---|---|---|
| Code Red Darcy | Susan Mallon West Coast | Approved |
| Codename Cavalier | Petra Hewer Westport | Approved |
| Cody Star | Eamonn O'Donnell Tir Conaill | Approved |
| Coeur Vaillant | Pam O' Reilly Carne | Approved |
| Coevers Clara | Jackie Horgan Lee Valley | Approved |
| Coevers Emperor | Rosalind Briggs Highland Lodge | Approved |
| Cognita | Patrick Mahon Warrington | Approved |
| Coill Bhruachlain Bruno | Maria Tierney Springmount | Approved |
| Coillcru Flight | Aoife D'Arcy Greenhills | Approved |
| Coille Mor Cavalier | Patricia Farrell Kilrainy | Approved |
| Coilltedubh Henry | Kieran Morrin Greenvalley | Approved |
| Cointreau | Amanda Howard Kerry | Approved |
| Cointreau Bay | Marese McCarra Mullaghmore | Approved |
| Cointreau Toffo | Jessica O' Mahony Killcarrick | Approved |
| Cois Farraige | Sarah Lang Thomastown and District | Approved |