| Name | Last Run |
|---|---|
| U Schwinn | Nancy 18-Oct-25, Always Dancing |
| Ubaldo Rivero | San Isidro 28-Nov-24, Toda Unidad |
| Udyta Clarke | Moe 08-Aug-20, Bel's Cliff |
| Umberto Belloc | Turf Paradise 30-Apr-25, You're My Boy Kat |
| Una Corcoran | Ballinrobe 25-Jul-23, Jackevan |
| Uria Martinez | San Isidro 01-May-25, Ibtisama |
| Uriah St Lewis | Monmouth Park 27-Jul-25, Tip Line |
| Ursula Clark | Donald 14-May-16, Kenji Doll |
| Ursula Dobbe | Pioneer Park 31-May-25, Superior Power |
| Uto Hideki | Nagoya 17-Oct-25, Hanamatsuri |