| Registered Name | Owner / Club | Status |
|---|---|---|
| Whitewood Rodge | Ann Marie Doyle Mosstown | Approved |
| Who's Illusion | Caroline O' Callaghan Warrington | Approved |
| Whole Lotta Rosie | Patricia Frost Ballinrobe | Approved |
| Why Not Mayo | Kate Solon Greenhills | Approved |
| Why Worry | Lauren Doyle Cheval | Approved |
| Whysocoy | Emma Boland Carrickmines | Approved |
| Wifonia | Marta Sheridan Rathangan | Approved |
| Wigor | Natasha Brotherton Kennedy Golden Grove | Approved |
| Wilcos Storm (IRE) | Amelia Paulsen Tynagh | Approved |
| Wild About Rain | Enda Collier Pratt Foxborough | Approved |
| Wild Atlantic Candy | Lorraine Kennedy Annaharvey | Approved |
| Wild Child | Mark Ward Tir Conaill | Approved |
| Wild Domaine | Jennifer Denny Mill Road | Approved |
| Wild Duchess | Jennifer Denny Mill Road | Approved |
| Wilderwood Chilled Porter | Lisa McLaughlin O'Brien Ashbrook | Approved |