| Registered Name | Owner / Club | Status |
|---|---|---|
| Upardalinho | Sarah Furney North Cork | Approved |
| Upper Church | Lorraine Kelly Castledermot | Approved |
| Uraan L | Terry Farrell Calliaghstown | Approved |
| Urania P.Van D'Oerte (KWPN) | Niamh Marsh Lismore | Approved |
| Urbi Et Orbi-S | Robert Murdy Ross House | Approved |
| Urlanmore Classie Lady | Kean O'Hara Benbulben | Approved |
| Urlanmore Riki | Michael Phillips Mill Road | Approved |
| Ursi | Val Joy Winterdown | Approved |
| User Friendly (Castle Ellis Larry) | Anne Lynch Waterford | Approved |
| Usher Road (IRE) | Joan Donovan Calliaghstown | Approved |
| Ushuaia Eliza Modesty | Erin Fergus Stracomer | Approved |
| Usiboss (IRE) | Colm Gainey Dunamase | Approved |
| Uskerty Diamond Lady | Hilda Anthony Piltown | Approved |
| Usual Suspect | Aoife Maguire Killossery | Approved |
| Vaillant D'Orange Z | Dylan Enright Mo Chara | Approved |