| Yasaka Sarah | Saga,
30-Nov-24 |
| Yasaka Soleil | Kawasaki,
16-Oct-25 |
| Yasalam | Wolverhampton,
20-Aug-25 |
| Yasamine | Goulburn,
09-Sep-22 |
| Yasat | Mont De Marsan,
26-Aug-24 |
| Yasena | Kilmore,
05-Apr-25 |
| Yasey San | Stony Creek,
10-Mar-13 |
| Yasey Sun | Moe,
14-Jun-20 |
| YASEYNITALL | Murray Bridge,
02-Dec-12 |
| Yashima | Hakodate,
29-Jun-24 |
| Yashin | Chester,
13-Sep-25 |
| Yashiro Boy | Sonoda,
04-Nov-25 |
| Yashiro Kenchan | Sonoda,
25-Aug-23 |
| Yashiro Smiley | Sonoda,
05-Nov-25 |
| Yashirohime | Ohi,
04-Jun-24 |
| Yasir | Club Hipico Santiago,
17-May-25 |
| Yasmeen | Doomben,
20-Sep-23 |
| Yasmeen | Monterrico,
04-Jun-23 |
| Yasmin From York | Newcastle,
21-Oct-23 |
| Yasmina | Chelmsford City,
07-Jun-24 |
| Yasnat | Canterbury Park,
20-Jan-17 |
| Yassamin Al Cham | Dax,
09-Sep-23 |
| Yasue | Mizusawa,
07-Oct-25 |
| Yasuke | Murray Bdge,
12-Jul-25 |
| Yasuke | Tokyo,
11-May-25 |
| Yasur | Ohi,
22-Oct-25 |
| Yasur | Gulfstream,
29-Jul-24 |
| YAT YEE SAM | Northam,
21-May-09 |
| Yata | Greyville,
14-Dec-22 |
| Yatagarasu Mahina | Nagoya,
30-Oct-25 |
| Yatama | Ararat,
19-Sep-14 |
| Yatchaw | Ballarat,
14-Oct-25 |
| Yatima | Mont De Marsan,
06-Jul-23 |
| Yatra | Concepcion,
07-May-25 |
| Yatta | Gulfstream,
26-Jan-25 |
| Yatta Izu | Benalla,
03-Jan-21 |
| Yattazou | Rosehill Gardens,
29-Oct-25 |
| Yau Chin | Flemington,
04-Nov-10 |
| Yau Majesty | Colonial Downs,
01-Aug-25 |
| Yaudacity | Keeneland,
12-Oct-25 |
| Yaugau | Tokyo,
05-Oct-25 |
| Yaupon De Replay | Leopardstown,
19-Oct-25 |
| Yavaika | Deauville,
29-Dec-24 |
| Yavanna | Betfair Park Sandown Hillside,
12-Nov-11 |
| Yawara | Lyon La Soie,
26-Oct-24 |
| Yawarda | Belmont,
26-May-21 |
| YAWHCRA | Hillside,
16-Sep-09 |
| Yawls Legacy | Sunray Park,
17-May-25 |
| Yawning | Geelong Synthetic,
15-Jul-14 |
| Yaxchilan | Ayr,
30-Sep-25 |
| Yaxeni | Naas,
06-Nov-22 |
| Yay | Turffontein,
16-Mar-23 |
| Yay Hooray | Horseshoe Indianapolis,
17-Oct-24 |
| Yay Or Neigh | Sportsbet-Ballarat,
22-Mar-20 |
| Yaya Maria | Fairview,
03-Jul-23 |
| Yayasgotmoregame | Fonner Park,
08-Apr-24 |
| Yayoi | Morphettville Parks,
30-Nov-24 |
| Yayoi | Morioka,
13-Aug-23 |
| Yazaman | Nottingham,
30-Oct-25 |
| Yazan | Ohi,
16-Sep-25 |