| Registered Name | Owner / Club | Status |
|---|---|---|
| Una Dolce Vita | Chiara Ruini Highland Lodge | Approved |
| Unbreakable Bond (IRE) | Elizabeth Gibney Carrickmines | Approved |
| Unbridled Power (IRE) | Libby Mooney Letterkenny | Approved |
| Undaris | Edmond Kearney Barrow Valley | Approved |
| Undeniably Bouncer | Suzanne Arthur Burren | Approved |
| Under The Spotlight | KATELYN BEATTIE Kilrainy | Approved |
| Une Etoile Du Desert | Alex Mc Dermott Ross House | Approved |
| Une Petite Pomme Francaise | Claire Carty Ballycanew | Approved |
| Union Cruising | April Rees King Burren | Approved |
| Union Out of Touch | Eleanor Curran Tonabrockey | Approved |
| United Sir | Tony Murphy Winterdown | Approved |
| Until Proven Guilty | Anne O'Dowd Ashbrook | Approved |
| Untouchable Lady | John Kehoe Ard Lu | Approved |
| Unwavering (IRE) | Nessa Van Rooyen Calliaghstown | Approved |
| Up A Gear (USA) | Hazel McCarthy Thomastown and District | Approved |