| Registered Name | Owner / Club | Status |
|---|---|---|
| Soldiers Secret | Alison O'Sullivan Annaharvey | Approved |
| Sollysgold Dust | Catherine Meenaghan Gaeltacht Iorrais | Approved |
| Solomons Reign | Roisin Mc Gee Donegal Gaeltacht | Approved |
| Solsboro Silver Pearl | Laura Snow Drynam | Approved |
| Som Du Vill | Pauline Costello Abbeylands | Approved |
| Some Dude (IRE) | Mick Byrne Golden Forge | Approved |
| Some Have Mercy (IRE) | Louise Lennon Border Counties | Approved |
| Some Kind of Spartacus | Niamh Smyth West Cork | Approved |
| Something About Mary | Aiden Fogarty Rock of Cashel | Approved |
| Something Different | Jessica Smyth Moyglare | Approved |
| Something Else Again | Lucinda Blakiston Houston Castle Leslie | Approved |
| Somethings Gotta Give | Sharon McGowan Benbulben | Approved |
| Somhairle Beartie Wooster | Jane Gaffney Benbulben | Approved |
| Somhairle Red Tiger | Kate Carton Ross House | Approved |
| Son of Eireann | Therese Curran Ashwood | Approved |