| Registered Name | Owner / Club | Status |
|---|---|---|
| Clyduff Ruby Tuesday | Pauline Powell Anvil | Approved |
| Cnoc an Noinin Boy | Hannah Mc Glinchey Letterkenny | Approved |
| Cnoc an Uisce (GB) | Lisa Richardson Waterford | Approved |
| Cnoc Mac Cloud | Brid Power Twinfort | Approved |
| Cnocban Blaze | Lynne Broderick Castle Hill | Approved |
| Cnocban Yasha | Deirdre Holmes Springmount | Approved |
| Cnocmor Black Magic | Barbara Harte West Cork | Approved |
| Cobalto XI | Caroline Marwood Knocknamana Country | Approved |
| Cobbler | Debbie Attwell Dennis Castle Hill | Approved |
| Cobtastic | Lorraine Kelly Castledermot | Approved |
| Coburg (IRE) | Tamarin Tomlin Carrickmines | Approved |
| Cock Robin | Susan Anderson Littlehill | Approved |
| Cocktail De Riverland | Aine Griffin Highland Lodge | Approved |
| Cocktail Time | Jennifer Maher Lismore | Approved |
| Coco Carel | Emily Vial Clonshire | Approved |