| Uberwald | Thoroughbred Park,
07-Apr-10 |
| Uberwinden | Kanazawa,
26-May-25 |
| UBETINIP | Allan Scott Park Morphettville,
23-May-09 |
| Ubettabehave | Newcastle,
02-Nov-25 |
| Ubettabequick | Newcastle,
05-Jan-24 |
| Ubetterseethis | Musselburgh,
13-Oct-25 |
| Ubetwedo | Ipswich,
10-Feb-21 |
| Ubetya | Worcester,
25-Jul-24 |
| Ubhejane | Kalgoorlie,
25-Apr-14 |
| Ubiquitas | Fairview,
21-Oct-22 |
| Ubiquitous | Mahoning Valley,
28-Feb-25 |
| Ubirr Rock | Rockhampton,
29-Dec-20 |
| Ubisika | Fairview,
29-Nov-24 |
| Uboa | Launceston,
25-Feb-15 |
| Ubriaco | Hobart,
05-Jan-24 |
| Ubsingintheblues | Lone Star,
28-Jun-25 |
| Ubud | Morioka,
13-Oct-24 |
| Ubukhwebezana | Greyville,
17-Sep-25 |
| Ubuntu Warrior | Fairview,
08-Mar-24 |
| Ucalledit | Eagle Farm,
28-Dec-24 |
| Ucanaver | Fontwell,
11-May-23 |
| Ucandoit | Thurles,
01-Dec-22 |
| Ucankissjudysboode | Horseshoe Indianapolis,
15-Nov-24 |
| Ucantgetwhatuwant | Canterbury Park,
23-Aug-24 |
| Ucaptured Aero | Mountaineer Park,
06-Nov-23 |
| Ucelle | Gatton,
16-Oct-25 |
| Ucetek | Allan Scott Park Morphettville,
11-Dec-09 |
| Ucheongryung | Seoul,
16-Jun-24 |
| Uchi | Flinton,
19-Apr-25 |
| Uchida | Eidsvold,
01-Oct-22 |
| Uchimura | Morphettville Parks,
09-Feb-13 |
| Uchina Time | Chukyo,
30-Aug-25 |
| Uchoten | Kanazawa,
03-Jun-25 |
| Uchronie | ParisLongchamp,
09-Jun-24 |
| Uchumayo | Monterrico,
11-Mar-23 |
| Uchuno Kibo | Ohi,
22-Oct-25 |
| Uchuno Sekai | Sapporo,
30-Aug-25 |
| Uconic | Wyong,
05-Nov-22 |
| Udaberri | Lingfield,
18-Nov-23 |
| Udacha | Gowran Park,
22-Oct-24 |
| Udayan | Devonport Tapeta Synthetic,
04-Jun-16 |
| Uddug | Seoul,
24-Jun-23 |
| Udea'n'dindy | Sunshine Coast,
16-Jun-19 |
| Uderzo | Te Rapa,
05-Jul-25 |
| Udidn'tpay | Tampa Bay Downs,
28-Apr-25 |
| Udinese | San Isidro,
31-Mar-25 |
| Udontneedtoknow | Galway,
26-Oct-25 |
| Ueno Maru Dandy | Ohi,
21-Oct-25 |
| Ueno Maru Man | Ohi,
11-Feb-24 |
| Uenomaru Thunder | Ohi,
14-Aug-25 |
| Ueo Muite Goran | Tokyo,
01-Nov-25 |
| Ufana | Wellington,
29-Jul-25 |
| Uffda | Los Alamitos Racecourse,
19-Oct-25 |
| Ufo | Gulfstream,
03-Nov-25 |
| Ufouria | Wexford,
05-Apr-25 |
| Ufufuto Runna | Saga,
05-Oct-25 |
| UGANDA | |
| UGANI MOR | |
| Ugatzai | Mont De Marsan,
16-Jul-25 |
| Ugenious | Racing.com Park Synthetic,
24-May-18 |