| Unclouded | Launceston,
09-Mar-22 |
| Unclouded | Nakayama,
09-Mar-25 |
| Uncommon Grace | Horseshoe Indianapolis,
04-Jul-23 |
| Uncommon James | Rosehill,
01-Apr-25 |
| Uncommon Mind | Naracoorte,
02-Nov-25 |
| Uncommon Soldier | Turf Paradise,
02-May-24 |
| Uncommon Valor | Delaware Park,
07-Jul-23 |
| Uncommon Valour | Doomben,
25-Oct-25 |
| Uncomplicated | Rockhampton,
15-May-21 |
| Uncompromised | Kalgoorlie,
04-Oct-25 |
| Uncompromising | Riccarton Park,
13-Sep-25 |
| Unconcerned | Devonport Tapeta Synthetic,
07-Jul-13 |
| Uncondiitional Love | Turf Paradise,
11-Apr-24 |
| Unconditional | Ipswich,
05-Aug-21 |
| Unconditional Love | Fairview,
04-Aug-23 |
| Unconditional Love | Charles Town,
05-Oct-25 |
| UNCONQUERABLE | Eagle Farm,
22-Jan-11 |
| Unconquerable | Morphettville,
10-May-25 |
| Unconquerable | Hanshin,
14-Sep-25 |
| Unconquerable Keen | Churchill Downs,
04-May-25 |
| Unconquerable Lady | Fairview,
22-Aug-25 |
| Unconquered Spirit | Delaware Park,
27-Aug-23 |
| Unconscious Mind | Charles Town,
19-Sep-25 |
| Uncontrollable | Gold Coast,
05-Jun-13 |
| Uncontrollable | Del Mar,
19-Aug-24 |
| Unconventional | Ascot,
13-Feb-16 |
| Unconventionallady | Sunshine Coast,
27-Aug-23 |
| Uncork It | Turfway Park,
14-Mar-25 |
| Uncork The Bottle | Gulfstream,
18-Jun-23 |
| Uncorked | Del Mar,
27-Jul-25 |
| Uncorked | Caulfield,
15-Oct-22 |
| Uncorked Humor | Lone Star,
03-Jul-23 |
| Uncorrelated | Aqueduct,
30-Nov-24 |
| Uncovered | Devonport Tapeta Synthetic,
15-Aug-21 |
| Uncovered Wealth | Ladbrokes Pioneer Park,
21-May-17 |
| UNCROWNED | |
| Uncrowned King | Del Mar,
03-Aug-25 |
| Unctuous | Carnarvon,
05-Aug-16 |
| Uncut Gem | Mackay,
12-Sep-25 |
| Unda The Influence | Bunbury,
08-Feb-13 |
| Undalay | Delaware Park,
10-Oct-25 |
| Undaoaf | Cessnock,
08-Jan-19 |
| Undaunted | Ladbrokes Pioneer Park,
08-Feb-20 |
| Undaunted Storm | Laurel Park,
29-Apr-24 |
| Undaunting | Sandown Hillside,
21-May-25 |
| Undecided | Hipodromo Chile,
04-May-25 |
| Undecided | Wingatui,
26-Dec-22 |
| Undecided | Lone Star Park,
19-Oct-25 |
| Undecoded | Oaklawn Park,
31-Mar-25 |
| Undefeatable | Dundalk,
25-Oct-25 |
| Undeniable | Kensington,
15-Feb-23 |
| Undeniable | Saga,
27-May-24 |
| Undeniable Alibi | Auteuil,
18-Oct-25 |
| Undeniably | Bendigo,
26-Nov-14 |
| UNDER A VIEW | Cobar,
16-May-09 |
| Under Achiever | Dubbo,
01-Nov-25 |
| Under Advisement | Churchill Downs,
27-Jun-24 |
| Under Agreement | Turfway Park,
08-Mar-25 |
| Under And Over | Morphettville,
13-Sep-25 |
| Under Arrest | Hawkesbury,
04-Nov-10 |