| Registered Name | Owner / Club | Status |
|---|---|---|
| Sir Rusty Red | Joan Fox Clonmel | Approved |
| Sir Ted | Madeline Dooley Abbeylands | Approved |
| Sir Tedward | Helen Carty Thornton | Approved |
| Sir Walter Disney | Noelle Reidy Earl's Well | Approved |
| Sir Ward | Maeve Lunny Stracomer | Approved |
| Sir Wise Guy | Joan Fox Clonmel | Approved |
| Sirbaz | Mark Fitzgibbon Russellstown | Approved |
| Sirius Star | Lucy Baker Burren | Approved |
| Sirocco Shadow | Thomasina Barron Kilrainy | Approved |
| Siscos Choice | Geraldine Farrell Cheval | Approved |
| Sisi | Grainne Murphy Unicorn | Approved |
| Siskin Lionel | June O' Hanlon Horetown | Approved |
| Sizing Australia (IRE) | Nicki Russell Kilotteran | Approved |
| Sizing Colombia (IRE) | Lucy Davis Warrington | Approved |
| Sizzling Sisco | Ros Rorke Cheval | Approved |