| Registered Name | Owner / Club | Status |
|---|---|---|
| Coolskeagh Prince | Eleanor Barron Castle Carraig | Approved |
| Coolykereen Miley | Sheila Winters North Cork | Approved |
| Coosanmore | Debbie Larkin Boyneside | Approved |
| Coosheen Puffin | Marjorie Haire Springmount | Approved |
| Copacabana Sunshine | Jessica Hill Ballinasloe | Approved |
| Copacabanna | Laura Corrigan Lakelands | Approved |
| Copernicus Boy Eh Z | Rosalind Briggs Highland Lodge | Approved |
| Coppenagh Marley | Fergus Maughan Killcarrick | Approved |
| Coppenagh Simon Siskin | Paul O'Leary Carrickmines | Approved |
| Copper Alley Diamond Lad | Hazel McCarthy Thomastown and District | Approved |
| Copper Charlie | Anna Wyse Clonmel | Approved |
| Copper Highlights | Miriam Davies Tinahely | Approved |
| Copperbeech Aoife | Thomasina O'Reilly Mosstown | Approved |
| Coppermine Belladonna | Jane Whitaker Copperfield | Approved |
| Coppermine Doll | Jane Whitaker Copperfield | Approved |