| Registered Name | Owner / Club | Status |
|---|---|---|
| Sopwell Bosco Bouncer | Charon Reams Anvil | Approved |
| Sopwell Daisy Duke | Iris Coleman Anvil | Approved |
| Sopwith Pup | Phoebe Bright Glengarriff | Approved |
| Sorrento Lass | Aoife Farrelly Mo Chara | Approved |
| Sorrentos Dream | Anna Livia Forsyth Cheval | Approved |
| SOS Shiraz | Linda O' Byrne Killcarrick | Approved |
| Sotally Tober (IRE) | Lucy Cunningham Highland Lodge | Approved |
| Soul of Manhatten | David Glynn Corrib | Approved |
| South Of The Hills | Yvonne Carroll Carne | Approved |
| Southern Dancer | Alison Mortell Mullingar | Approved |
| Southgrange D'Mirage | Kerri Knipe Nephin | Approved |
| Southway Flying Comet | Laura Pope East Cork | Approved |
| Soviet Heathers Star | Jessica Tighe Round Tower | Approved |
| Spanish Lace | JENNA KILLEN Annaharvey | Approved |
| Spanner | Michelle Brannigan Moyglare | Approved |