| Registered Name | Owner / Club | Status |
|---|---|---|
| Yarraman (IRE) | Samantha Murphy South West | Approved |
| Yarrow Valley | Brigid Neill Thomastown and District | Approved |
| Yasmina V | Bernie Foley Cheval | Approved |
| Yeats County | Ken Lowry Springmount | Approved |
| Yeats' Duke-Box Jive | Emer Lawlor Moyglare | Approved |
| Yegua | Samantha Fitzsimons Calliaghstown | Approved |
| Yellowriver Diamond Dancer | Laura Bohan Mullingar | Approved |
| Yke | Shellie Murtagh Clonlara | Approved |
| Ynyslas (GB) | Anne Marie Hannon Mullingar | Approved |
| Yore Diamond | Susan Kennedy Castle Hill | Approved |
| You Little Daisy | Jason Coughlan Russellstown | Approved |
| You Too Bonnie | Kayleigh Murphy Golden Grove | Approved |
| You Two | Sarah McMickan Hollybrook | Approved |
| Youdbe (IRE) | Johanna Gilligan Tara Hill | Approved |
| Young Grandpa | Sandra Harkin Cill Dara | Approved |