| Name | Last Run |
|---|---|
| Under The Radar | Thirsk, 06-Sep-25 |
| Under The Radar | Broome, 01-Jul-23 |
| Under The Radar | Delaware Park, 03-Aug-25 |
| Under The Rainbow | Vaal, 16-Jan-25 |
| Under The Rock | Ballarat, 03-Oct-24 |
| Under The Sea | Club Hipico Santiago, 25-Jan-25 |
| Under The Sea | Yarmouth, 16-Oct-24 |
| Under The Shadow | Townsville, 12-Jun-25 |
| Under The Sombrero | Esperance Bay, 15-Feb-19 |
| Under The Star | Kochi, 02-Nov-25 |
| Under The Stars | Santa Anita, 26-Dec-22 |
| Under the Sun | Broome, 08-Jul-17 |
| Under The Sun | Newbury, 25-Oct-25 |
| Under The Tassels | Warrnambool, 31-Jul-23 |
| Under The Twilight | Wolverhampton, 04-Nov-25 |
| Under Twenty Two | Taree, 15-Aug-25 |
| Under Who's Radar | Finger Lakes, 22-Oct-24 |
| Under Your Spell | Sonoda, 16-Nov-23 |
| Under Your Spell | Scottsville, 03-Jun-23 |
| Underappreciated | Keeneland, 19-Oct-25 |
| Underated | Ruidoso Downs, 23-Jun-25 |
| Underbid Brittany | Charles Town, 24-Aug-25 |
| Underbidder | Belmont At The Big A, 03-Oct-25 |
| Underboss | Newcastle, 19-Jan-22 |
| Underboss | Charles Town, 12-May-24 |
| Undercover | Oaklawn Park, 28-Dec-24 |
| Undercover Agent | Murray Bridge Gh, 03-Jul-24 |
| Undercover Agent | Ellis Park, 21-Jul-25 |
| Undercover Girl | Mareeba, 15-Sep-18 |
| Undercover Girl | Fair Grounds, 09-Mar-25 |
| Undercover Lady | Mountaineer, 27-Jun-24 |
| Undercover Lizzy | Northam, 30-Sep-12 |
| Undercover Lover | Kenilworth, 22-Jul-25 |
| Undercover Lover | Market Rasen, 01-Dec-22 |
| Undercover Sniper | Geraldton, 04-Nov-25 |
| UNDERCOVERCAT | |
| Undercurrent | Seymour, 30-Mar-14 |
| Undercut | Geelong, 11-Jul-25 |
| Underdog | Vaal, 28-Oct-25 |
| Underdog | Delaware Park, 10-Aug-23 |
| Underdressed | Horseshoe Indianapolis, 28-Aug-25 |
| UNDERFIRE | Geraldton, 29-Nov-09 |
| Underground Music | Kembla Grange, 13-Jan-24 |
| Underhand | Fannie Bay, 07-Feb-25 |
| Underhill's Tab | Churchill Downs, 26-Jun-25 |
| Underinvested | Monmouth Park, 22-Jun-24 |
| Underinvestigation | Clifton, 26-Oct-24 |
| Underlay | Chelmsford City, 29-Oct-23 |
| Underline | Otaki, 22-Feb-25 |
| UNDERLINE | Ascot, 29-Oct-11 |
| Undernumbered | Sunland Park, 07-Mar-25 |
| Underpants | Flemington, 22-Jun-24 |
| Underplay | Devonport Tapeta Synthetic, 11-Jul-21 |
| Underplot | Tokyo, 28-Jan-24 |
| Underpromise | Lyon La Soie, 26-Oct-24 |
| Underrated | Rockhampton, 03-Nov-25 |
| Underrated | Charles Town, 23-Nov-24 |
| Underscore | Chukyo, 10-Aug-25 |
| Understandable | Los Alamitos Racecourse, 18-Aug-25 |
| Understated | Kyneton, 10-Apr-25 |