| Registered Name | Owner / Club | Status |
|---|---|---|
| Sweet Zoe | John Dunne Friary | Approved |
| Sweettasteoflove (IRE) | Amanda Kennedy Brewer Annaharvey | Approved |
| Sweetwell | Mary Hagan Fingal | Approved |
| Swifty Lad | Mary Dorgan Foxborough | Approved |
| Swollow Brook | Declan Fegan Ard Lu | Approved |
| Sword's Edge (IRE) | Michael Duke Calliaghstown | Approved |
| Sycamore Lad | Jurgita Zelvyte Kilrainy | Approved |
| Sycamore Rose | Bree Price Fingal | Approved |
| Synergy | Gerard Kavanagh Foxborough | Approved |
| Syruss Blue | Ellen Rudden Lakelands | Approved |
| Ta Daa | Tory Berber Foxborough | Approved |
| Tabasco Rose | Naomi Bates Foxborough | Approved |
| Taberios Girl | Olive Walker Enniskerry | Approved |
| Tacin (IRE) | Sarah Neville Mill Road | Approved |
| Tagoat Smokey | Shane Lynch Carne | Approved |