| Registered Name | Owner / Club | Status |
|---|---|---|
| Cornelius Maximus | Nicole Danaher Clonshire | Approved |
| Corner House Rebel | Jane Gallagher Kilronan | Approved |
| Cornett Star | Sandra Moran Barrow Valley | Approved |
| Cornfield Fusion | Anne Nixon Mosstown | Approved |
| Cornfield Spirit | Becky Tiernan Benbulben | Approved |
| Cornskye Dotty | Jan Dickson Mullingar | Approved |
| Coroline | Lorraine D' Arcy Dalysgrove | Approved |
| Coronado | Cora Horan Springmount | Approved |
| Coronado Clover | Simone O'Shaughnessy Highland Lodge | Approved |
| Corragh Maxwell Lady | Francis Duffy Castle Leslie | Approved |
| Corrdubh Luca | Anita McNamara Castle Hill | Approved |
| Correal Champion | Megan Magennis Ard Lu | Approved |
| Corrib Star | Ian Quinlan Meath | Approved |
| Corrig Warrior (IRE) | Seana Devlin Lismore | Approved |
| Corrigeen Clover | Sean Keyes Benbulben | Approved |